stotherm systems application guideline · 2015-11-20 · stotherm classic® organic external wall...

| Facade | External wall insulation system |

StoTherm systemsApplication guideline

It should be noted that the following details, illustrations, general technical information, and drawings contained in this brochure are only general proposals and details which merely describe the basic functions schematically. No precise dimensions are included. The applicator/client is independently responsible for determining the suitability and completeness for the product in question. Neighbouring works are described only schematically. All specifications and information must be adjusted or agreed upon in the light of local conditions and do not constitute construction documentation, details or installation plans. The technical specifications and product information in the Technical Data Sheets and in system descriptions/certificates must be observed.

Contents

Contents | 3

System information

StoTherm Classic® 6

System structure 6System description 6

StoTherm Vario 7


StoTherm Mineral 8


Substrate preparation 9

Substrate table 9

Application of the system

Fixing systems 10

Insulation board fixing (EPS) 10

Bonding insulant/bonding and dowelling 10Bonding 11Additional dowelling 12Additional dowelling, Version I: Sto-Thermo Dowel 14Additional dowelling, Version II: Sto-Ecotwist 14Additional dowelling, Version III: Sto-Screw Dowel, recessed 15Additional dowelling, Version IV: Sto-Hammer Dowel 15Two-layer installation 16

QR code generated on http://qrcode.littleidiot.be

View this guideline as a film:simply scan the QR code or go to Sto AG's YouTube channel.

Platzhalter!

Insulation board fixing 17

Mechanical fixing with rail system 17Mechanical fixing with Sto-Rotofix plus 19

Base coat 21

Preliminary works before base coat application in the case of EPS insulation boards 21Reinforcement of reveals 21

Top coat 23

Finishing render 23StoDeco Profiles 24StoDeco Rustications 24StoSilt Glazed Brick Slips 25

Plinth 26

Connection in the ground and splash zone 26Plinth insulation in the splash zone 26

Details

Plinth connection 28

Free of thermal bridges, version I 28Free of thermal bridges, version II 29Free of thermal bridges, version III 30Building with unheated basement 31

External wall/system transition 31

Area subject to a risk of impacts 31Corner formation 32Render stop 32

External wall/undersides 33

Drip edge formation 33

Fire barrier 34

Windows and doors 34

Installation of StoFentra Profi 34Retrofitting of the balcony threshold or window sill 36Window connection – general information 37Window connection, version I 38Window connection, version II 38

4 | Contents

Roof connection 39

Connection to a ventilated/non-ventilated roof 39Connection to a non-ventilated roof 39

Building element fixing 41

Overview of installation elements 41StoFix Ashlar 42

Scaffold plug 43

Structural expansion joints 43

Expansion joint formation 43Version I: Expansion joint profile 44Version II: Expansion joint tape 45

Application of the system

StoTherm Mineral 47

Additional information on application 47

Insulation board fixing (MW) 47

Bonding 47Bonding the mineral wool insulation board 48Bonding the lamella insulation board 48Additional dowelling 49Additional dowelling of the mineral fibre board Version I: Sto-Thermo Dowel, recessed 50Additional dowelling of the mineral fibre board Version II: Sto-Thermo Dowel 51Additional dowelling of the mineral fibre board Version III: Sto-Thermo Dowel 52Additional dowelling of the lamella insulation board 53Mechanical fixing with rail system 54Mechanical fixing with Sto-Rotofix plus 54

Contents | 5

StoTherm Classic®

Organic external wall insulation system of limited combustibility with polystyrene insulation

Application • Existingbuildingsandnewbuildingsuptohigh-riselevel(max.22 m)

• Wallstructures:masonry(concrete,limesandstone,brick,porousconcrete),fair-facedmasonry,concreteslabconstruction(three-layerconcreteslabs)

• Ontoexternalwallsintimberframeconstruction• Unevennessofupto3cm(onsolidconstructions)• Insulationthicknessofupto400 mm

Properties • Highresistancetomicroorganisms(algaeandfungi),particularlywithasupplementarypaintsystem

• Veryhighcrackresistance• Highlymechanicallyresistant:upto15joulesin

standardsystemconfiguration,demonstrablyupto60joulesintheplintharea

• Highlyeffectivethermalinsulant• Highlyweather-resistant• PermeabletoCO2andwatervapour• Limitedcombustibility• Alsosuitableforlow-energyandpassivehouses• Reinforcingmeshwithoptionalprotectionagainst

electro-smog• OptionalLotus-Effect®Technology

Appearance • Stippled,rilledandfree-styletexturedrendersinvariousgrainings

• TintableinaccordancewiththeStoColorSystem• Lightnessvaluesof<15%possible(onrequest)• StoDecoRustications,Sto-RusticationBoards• Sto-NaturalStoneTiles,ceramictiles/slabs• Sto-BrickSlips,StoSiltGlazedBrickSlips

Application • Cement-free,ready-to-usesystemcomponentsthroughout

• EfficientapplicationthroughtheuseofStoSiloandmachineryequipment

• Completedetailsolutions• Noprimingorlevellingcoatsnecessary• UniqueSto-Turbofixtechnology

Approvals TherelevantEuropeanand/ornationalapprovalsapply.

System structure System description

1 Bonding: Sto-Turbofix Bonding with a PU foam (insulation boards as a groove and tongue construction system made of expanded polystyrene rigid foam) Alternatively: Sto-Dispersion Adhesive1) Organic, ready-to-use adhesive compound, suitable for application by machine Alternatively: Sto-ADH-B Mineral adhesive compound, suitable for application by machine

2 Insulation: Sto-Polystyrene Rigid Foam Board Limited combustibility (thermal conductivity group 032, 035 and 040)

3 Fixing: *Not shown. In accordance with the requirements set by the relevant authorities

4 Base coat: StoLevell Classic Organic, cement-free, ready-to-use base coat, suitable for application by machine Alternatively: StoArmat Classic Organic, cement-free, ready-to-use base coat, suitable for application by machine

5 Reinforcing coat with glass fibre mesh: Sto-Glass Fibre Mesh Alternatively: Sto-Shield Mesh AES

6 Top coat: StoLotusan® K/MP Ready-to-use finishing render with Lotus-Effect® Technology Alternatively: Stolit K/R/MP Organic, cement-free, ready-to-use finishing render Alternatively: StoSilco K/R/MP Ready-to-use silicone resin finishing render

7 Top paint coat (optional): *Not shown. StoColor Lotusan® G with Lotus-Effect® Technology or StoColor Silco G

1) IfStoThermClassic®isappliedtoexternalwallsinatimberframeconstruction,Sto-DispersionAdhesivemustalwaysbeusedforbonding.

1 2 3* 4 5 4 6 7*

The StoTherm Classic® external wall insulation system in connection with the detail solutions especially developed for passive houses is certified as a component suitable for passive houses by the passive house institute in Darmstadt.

6 | System structure/system descriptionNote: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions.

The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.

StoTherm Classic®

System descriptionSystem structure

8*

1 Bonding: StoLevell Uni or Sto-ADH-B Mineral bonding mortar Alternatively: StoLevell FT1)

2 Insulation: Sto-Polystyrene Rigid Foam Board Limited combustibility (thermal conductivity group 032, 035 and 040)

3 Fixing: *Not shown. In accordance with the requirements set by the relevant authorities

4 Base coat: StoLevell Uni or StoLevell Duo plus Mineral base coat Alternatively: StoLevell FT1)

5 Reinforcingcoatwithglassfibremesh: Sto-GlassFibreMesh Alternatively: Sto-ShieldMeshAES

6 Intermediate paint coat: Sto-Primer With organic finishing render Alternatively: StoPrepMiral with mineral finishing render

7 Top coat: StoLotusan®K/MP Ready-to-use finishing render with Lotus-Effect® Technology Alternatively: StolitK/R/MP Organic, cement-free, ready-to-use finishing render Alternatively: StoSilcoK/R/MP Ready-to-use silicone resin finishing render Alternatively: StoSilK/R/MP Ready-to-use silicate finishing render Alternatively: StoMiralK/R/MP Mineral finishing render Alternatively: StoMiralFTK1) Mineral finishing render

8 Top paint coat (optional): *Not shown. StoColor Lotusan®GwithLotus-Effect® Technology, StoColor Silco G orStoColorJumbosil

1 2 3* 4 5 4 6 7

System structure/system description | 7

StoTherm VarioExternal wall insulation system with polystyrene insulation

Application • Existingbuildingsandnewbuildingsuptohigh-riselevel(max.22m)

• Wallstructures:masonry(concrete,limesandstone,brick,porousconcrete),concreteslabconstruction(three-layerconcreteslab),fair-facedmasonryandtimberframeconstruction

• Unevennessofupto3cm• Insulationthicknessofupto400 mmorupto

200 mmforceramics

Properties • Highlyeffectivethermalinsulantandweather-resistant

• Resistanttomicroorganisms(algaeandfungi)withdoubleprotectivecoating

• Highcrackresistance• Mechanicallyresistant• HighlypermeabletoCO2andwatervapour• Limitedcombustibility• Reinforcingmeshwithoptionalprotectionagainst

electro-smog• OptionalLotus-Effect®technology


• Lightnessvalues≥20%• Limitedtintabilityinaccordancewiththe

StoColorSystem• StoDecoProfiles• StoDecoRustications• Sto-NaturalStoneTiles,ceramictiles/slabs• StoSiltGlazedBrickSlips

Application • Completedetailsolutions• Efficientapplicationthroughtheuseofmachinery

technology

Note: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions. The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.

StoTherm Vario

1) FTtechnologyforthewetandcoldseason,fastsetting–withearlyrainproofing.

System structure System description

StoTherm MineralMineral, non-combustible external wall insulation system with mineral wool insulation

Application • Permissibleonexistingbuildingsandnewbuildingsuptoabuildingheightof100m

• Wallstructures:masonry(concrete,limesandstone,brick,porousconcrete),fair-facedmasonry,concreteslabconstruction(three-layerconcreteslabs)andtimberframeconstruction

• Unevennessofupto3cm/m(seeapproval)

Properties • Resistanttomicroorganisms(algae,fungi)withdoubleprotectivecoating

• Highsoundprotection• Highcrackresistance• Mechanicallyresistant• Highlyeffectivethermalinsulant• Highlyweather-resistant• HighlypermeabletoCO2andwatervapour• Non-combustible• Reinforcingmeshwithoptionalprotectionagainst

electro-smog


• Broaddesignvarietyforfacadesintermsofformandtexture

• Colourshadevariety:LimitedtintabilityaccordingtotheStoColorSystem(lightnessvaluesforfinishingrenders≥20%)

• Architecturalelements:StoDecoProfiles,StoDecoRustications

• Sto-NaturalStoneTiles,ceramictiles• StoSiltGlazedBrickSlips

Application • EfficientapplicationthroughtheuseofStoSiloandmachineryequipmentplusconstructionsitelogistics

• Completedetailsolutions

1 2 34 5 4 6 8*7

1 Bonding: StoLevell Uni Mineral bonding mortar Alternatively: StoLevell FT1)

2 Insulation:Sto-MineralFibreBoard/SpeedLamella Insulation board made of mineral wool in accordance with EN 13 162

3 Fixing: In accordance with the requirements set by the relevant authorities

4 Base coat: StoLevell Uni Mineral base coat Alternatively: StoLevell FT1)

5 Reinforcingcoatwithglassfibremesh:Sto-GlassFibreMesh Alkali-resistant glass fibre mesh, meets the very highest requirements for crack resistance and shock resistance Alternatively: Sto-GlassFibreMeshF Alternatively: Sto-ShieldMeshAES

6 Intermediate coating: *Not shown. Sto-Primer With organic finishing render Alternatively: StoPrep Miral with mineral finishing render

7 Top coat: StoLotusan®K/MP Ready-to-use finishing render with Lotus-Effect® Technology Alternatively: StolitK/R/MP Organic, cement-free, ready-to-use finishing render Alternatively: StoSilcoK/R/MP Ready-to-use silicone resin finishing render Alternatively: StoSilK/R/MP Ready-to-use silicate finishing render Alternatively: StoMiralK/R/MP Mineral finishing render Alternatively: StoMiralFTK1) Mineral finishing render

8 Top paint coat: *Not shown. StoColor Lotusan® G with Lotus-Effect® Technology or StoColor Silco G

The information on the following pages is also mostly valid and applicable to the StoTherm Mineral external wall insulation system. Any deviations are described from page 47 onwards.

Info

8 | System structure/system description Note: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions.


StoThermMineral

1) FTtechnologyforthewetandcoldseason,fastsetting–withearlyrainproofing.

Substrate preparation Substrate table

Substrate Substrate preparation Primer

Smooth fair-faced concrete/smooth ceramic surface

Priming StoPrep Contact + 20% cement

Organic and silicone resin-bound renders (load-bearing)

Cleaning –

Efflorescence Sweepdry,brush –

Moisture-penetrated Eliminatethecause,waituntildry1)

–

Mosses, algae, fungi Clean,leavetodry.Applyprimeranddonotsubsequentlywash

StoPrim Fungal

Dusty, dirty Sweep,brush,jetwash,leavetodry

–

Greasy, residue of formwork release oil

Jetwash,usingadditionalcleaningagents.Washsubsequentlywithwaterandleavetodry

–

Paint coat, flaking

Removebymechanicalmeansorstrip,jetwashunderhighpressure,washsubsequentlywithclearwaterandleavetodry

–

Chalking Cleanandprime Stoplex W

Absorbent Prime Stoplex WStoPrim Micro

Sanding Brushandprime Stoplex WStoPrim Micro

Sinter skin Removebymechanicalmeans –

Brittle, non-load bearing Removebymechanicalmeans –

With spalling/cavities

Knockoffspallingandfillcavitieswithasuitablemortar,observedryingtimes

–

Unevenness2) Removebymechanicalmeansorlevelwithasuitablemortar,observedryingtimes

–

Curtain walls,veneers,primary walling

Productionofaload-bearingsubstratethroughbondingorsubsequentdowellingbasedonstaticrequirement

An external wall insulation system can only be applied if the substrate satisfies certain criteria and is tested for its load-bearing capacity. In the case of soiled, absorbent or uneven substrates, pre-treatment is always necessary; in the case of non-load bearing substrates, the system must be applied with a mechanical fixing system.

Primers are always applied diluted to suit the substrate. Primers must not remain glossy after drying.

After successful substrate preparation, the next important step is to choose the right adhesive for the selected system. Depending on the system and the substrate, additional dowelling of the insulation boards may be required.During mechanical fixing (rail fixing or fixing with Sto-Rotofix plus), substrate preparation can be eliminated, although it is essential in this case to ensure that the masonry is dry.

1)Intheeventofrisingmoisturewithanoticeablemoisturepenetra-tionlevel,thesepreparatorymeasuresarenotsufficient.

2)≤1cm/minthecaseofbondedsystems,≤2cm/minthecaseofbondedanddowelledsystems,

≤3cm/minthecaseofmechanicalfixingwitharailsystem,≤7cm/minthecaseofmechanicalfixingwithSto-Rotofixplus.

Substrate preparation/substrate table | 9The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.

Fixing systems Insulation board fixing (EPS)

Bonding

Load-bearing substrate, suitable for bonding, with an unevenness of up to 1 cm/m

In the case of load-bearing substrates suitable for bonding (≥ 0.08 N/mm2), it is sufficient to bond the insulation board with a minimum bonded proportion of 40%.

Bonding and dowelling

Substrate suitable for bonding with insufficient load-bearing capacity and/or an unevenness of up to 2 cm/m

In the case of substrates with an insuf-ficient load-bearing capacity (< 0.08 N/mm2), additional dowelling with approved dowels is required.

Mechanical fixing

M system (centre image): Substrate suitable for bonding with an unevenness of up to 3 cm/m and/or substrates not suitable for bonding

Sto-Rotofix plus: Substrate suitable for bonding with an unevenness of up to 7 cm/m and/or substrates not suitable for bonding

In the case of substrates with an uneven-ness between 2 and 7 cm/m, a mechanical fixing system must be used. Alternatively, the substrate may be replaced or steined or the render and/or paint coat may be removed by mechanical means.The mechanical fixing systems are also used for substrates with an insufficient load-bearing capacity (< 0.08 N/mm²).

Bonding insulant/bonding and dowelling

Bonding the insulation boards Excessive drying times of the bonding mortar on the insulation board or wall lead to the formation of a skin on the bonding mortar which can lead to adhesion problems. Immediately after application of the bonding mortar (after 10 minutes at the latest), press the insulation boards onto the adhesive, have them float into place and press-fit them. Depending on the weathering, this time interval may be shorter.Install the insulation boards from bottom to top, in an offset pattern and so that they abut, leaving no open joints between the insulation boards. Unavoidable joints must be sealed with a suitable filler foam.Use insulant strips to seal joints with a width greater than 5 mm.There must be no base coat mortar in joints or between board joints. Damaged insulation boards must not be installed. Scatter offcuts (minimum width 15 cm) across the surface (not at the outer edges of a building or building apertures).Seal the gap between the starter track and the wall using a suitable filler foam.

InsulantSto-Polystyrene Rigid Foam Boards are delivered cut to precise angles, with straight edges and dimensionally accurate and are available with straight or over-lapped edges and as a groove and tongue construction set.

Protect the polystyrene rigid foam boards against the action of heat, UV radiation, moisture and mechanical damage (do not use moist, wet or damaged insulation boards). Due to the silver/grey colour shade of the insulation board (thermal conductivity group 032), measures for preventing thermal heating should be considered. The insulant should therefore be protected against direct solar radiation, e.g. by means of scaffold netting, during and after application. Further coatings should be applied within a few days.

Important

Sto-Starter ProfilesAfter establishing the height of the plinth, the Sto-Starter Profiles are mounted torsion-free, vertically and flush (see application details). Seal the gap between the Sto-Starter Profiles and the wall using a suitable filler foam.

Important

10 | Fixing systems/insulation board fixing (EPS) The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.

Insulation board fixing (EPS)

Full-surface bondingIn the case of smooth substrates, apply the bonding mortar to the entire surface of the insulation board and tooth with a toothed trowel (15 x 15 mm). When doing so, do not hold the toothed trowel too flat. Use an emery board for board fixation.

Bonding

1a

Preventing thermal bridges: Thoroughly remove bonding mortar between board joints or joints immediately.

Tip

After pressing the board onto the bonding mortar, it is important to ensure that the board adheres evenly to the substrate.

Spot/edge bondingIn the case of uneven substrates up to 1 cm/m, apply a line of adhesive all around the edge of the boarding and 6 adhesive fixing dabs on the surface.

1b After pressing the board onto the adhesive, the bonded proportion must be at least 40% on both the substrate and the insulation board.

Machine application of bonding mortar to the insulation boardIn the case of even and uneven substrates up to 1 cm/m, apply an all-round line of adhesive with an enclosed W or M.

After pressing the board onto the adhesive, the bonded proportion must be at least 40% on both the substrate and the insulation board.

Insulation board fixing (EPS) | 11

2a

3a

2b

3b

1c

2c

3c



Additional dowelling

Substrate:In the case of substrates with an insufficient load-bearing capacity, the insulation boards must be dowelled as well as bonded. Please note: Only use dowels with the appropriate approval! Depending on wind loads, building height, location, etc., additional dowelling may also be necessary for load-bearing substrates. The relevant European and/or national specifications must be observed.

Anchorage depth:The dowel must be anchored in the load-bearing substrate at the depth required by the relevant dowel approval. Tiles and old render are not classed as suitable anchorage substrates.

Pull-out tests:In the case of undefined substrates, the pull-out strength must be determined by taking measurements on the object.

Dowel specifications:The dowel length depends on the existing wall structure and the insulant thickness. The number of dowels depends on the height and location (surface, edge). Dowelling is usually located beneath the reinforcing coat or the reinforcing mesh. Ensure an even dowelling pattern.

Bonding

Machine application of bonding mortar to the wall In the case of smooth substrates, apply an adhesive bead in sinuous lines with a max. spacing of 10 cm to the wall.


Laying of the insulation boardsLay insulation boards from bottom to top, tight-butted in a bond and offset to the building corners. Press the boards firmly onto the wall. Remove any excess adhe-sive in order to prevent thermal bridges.

In the case of bonding with Sto-Turbofix, the laid insulation boards must again be pressed onto the wall and re-adjusted after max. 10 minutes using a long spirit level.

2d

1d

3d

4

12 | Insulation board fixing (EPS)

01/03.13

W 010System section (vertical section): Dowelling and bonding

wall construction

External wall insulation system

Note: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions. The applicator/customer is independently responsible fordetermining the suitability and completeness for the product in question. Neighbouring works are described only schematically. All specifications and assumptions must be adjusted or agreed inthe light of local conditions. Compliance with the actual technical specifications contained in the Technical Data Sheets and system approvals is mandatory.

EN

Rev. no.

cap

adhesive

insulation board

reinforced base coat

Apply a finishing render and, if necessary,a paint coat.

Apply priming paint coat if necessary.

dowel

STO-HQ- -GEN

Facade insulation system, bonded and dowelled

Sto-TurbofixBonding with a PU foam for polystyrene rigid foam boards not only saves time. It also simplifies construction site logistics considerably. This is because a 10.4 kg bottle of Sto-Turbofix is equivalent to 14 sacks of bonding mortar. Further information can be found in the Sto-Turbofix application guideline.

Product tip



The building height is divided into three ranges. The required number of dowels depends on the height range and the wall material. More dowels are required in the rim zone than in the surface.

Additional dowelling Additional dowelling

The relevant European and/or national approvals apply.

Note


Rim zone Surface area

a=spacingbetweentheexteriordowelandtheedgeofthebuilding.Withmasonryatleast10cm,withconcreteatleast5cm.

a

Building height:> 20 m

Building height:8 – 20 m

Building height:up to 8 m

Use of dowelsSto recommendation/m2

Height range (m) Edge Surface area

0 – 8 8 6

8 – 20 10 6

> 20 14 6



Drill the required drill holes into the wall with a spacing of at least 10 cm from the edge of the insulation board. When doing so, observe the corresponding information in the Technical Data Sheet and the approvals.

Note: Prior to this, the insulation boards must be bonded as described on page 11 onwards. Please adhere to the specified drying times.

Drill the required drill holes into the wall. When doing so, observe the corresponding information in the Technical Data Sheet and the approvals.


Adjust the stop on the setting tool in accordance with the insulant thickness.

Insert the dowel into the drill hole until the dowel plate is flush with the insulation board.

Press the dowel gently against the insulant using the setting tool. Screw in the dowel by applying even pressure until the stop is flush with the surface of the insulant.

Seal the small hole in the surface of the insulant using the Sto-Ecotwist VE closing element or the Sto-Pistol Foam SE. Then create a smooth surface using a cutting knife and an emery board.

Grind until even using an emery board.This results in a closed, level insulation layer that prevents the appearance of dowel markings on the facade.

Insert the Sto-Thermo Dowel Cap EPS into the dowel plate recess.

Insert the dowel.Screw in the dowel screw using a suitable screwdriver and corresponding installation tool. End the setting procedure as soon as the stop washer touches the surface of the insulant. There is no unpleasant milling dust as the insulation material is compressed.

Additional dowellingVersion II: Sto-Ecotwist

Additional dowellingVersion I: Sto-Thermo Dowel, recessed

44

55

33

22

1

14 | Insulation board fixing (EPS) The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.

1

Prior to surface-flush dowelling, the insulation boards must be honed smooth.


Drill a hole for the dowel in accordance with the dowel approval.



Hammer in the integrated nail so that the dowel plate is flush with the surface of the insulant.


4

3

2

11

Additional dowellingVersion IV: Sto-Hammer Dowel



Mill a recess in the insulant for the Sto-Screw Dowel using the Sto-Thermo Countersinking Tool. Then remove the milling dust.

Insert the Sto-Thermo Cap EPS into the dowel plate recess. Then grind until even using the emery board.This results in a closed, level insulation layer that prevents the later appearance of dowels markings on the facade.

Insert the dowel into the drill hole until the dowel plate is flush with the recess in the insulation board. Then screw in the dowel screw.

Additional dowellingVersion III: Sto-Screw Dowel, recessed

4

3

2


Due to thermal bridges, we only recommend this dowelling version if versions I, II or III cannot be used.

Note

16 | Insulation board fixing (EPS)


x

y

d

d = insulant thickness

x ≥ d, but at least 10 cm

y ≥ d, ideally: half the board height, but at least 10 cm

Full-surface bonding of the second insulation layer.

Two-layer installation

In the case of the insulant thicknesses (> 20 cm) used in low-energy construction and passive houses, for example, two-layer installation of the insulation boards is recommended. The second layer of insulant is to be applied sufficiently offset against the first layer both vertically and in terms of the joints (no continuous joints).

The installation of two-layer insulation boards allows details to be produced more easily and free of thermal bridges (e.g. in the case of window connections).

It is generally recommended that you force-fit the corner toothing using a suitable installation adhesive (e.g. Sto-Turbofix).

Cut off any excess adhesive.

When installing the second insulation layer, the floating-buttering method is recommended due to the low absorption capacity of the substrate (EPS).

Important

1

2

3

If mechanical fixing is required (by a standard), shorter and therefore cheaper dowels can be used for two-layer bonding. This eliminates local thermal bridges and the risk of marks being left by the dowels.

Tip


Insulation board fixing

Mechanical fixing with rail system


Building height:> 20 m

Building height:8 – 20 m


Insulation board fixing | 17

Use of dowels with EPS insulation boards

Sto recommendation/m2

Height range (m) Edge Surface area

0 – 8 4 0

8 – 20 8 4

> 20 12 4


Rim zone Surface areaRim zone Surface area


From high-rise level up to 100 m

From 8 m to high-rise level


Use of dowels with MW insulation boards

Sto recommendation/m2

Dowel load class Height range (m) EdgeSurface area

≤ 0.15 kN/dowel 0–8 4 2

8tohigh-riselevel 8 2

Abovehigh-riselevelupto100m

12 2

The relevant European and/or national approvals apply.

Note


Dowel patterns for polystyrene rigid foam boards, M system

Dowel patterns for Sto-Mineral Fibre Board 040, M system

a a

Push the connecting tracks between the insulation boards. The connecting tracks are used to stabilise the insulation boards and create an even surface. Then align the insulation boards again.

5

Push the insulation board into the starter track. Install it next to the previous board so that they tight-but. Depending on wind loads, building height, location, etc., additional dowelling may be necessary. The relevant European and/or national specifications must be observed.

Align the insulation boards.

3

4

After installing a row of boards, press the intermediate track firmly into the top groove and insert dowels. Compensate for any unevenness using packing shims. Then continue to install the insulation boards row by row as described in Step 2 onwards. It is important to ensure that there is a sufficient offset between the board joints.

When cutting to size, a groove for the intermediate or connecting track is then cut in using the grooving tool.

6

7

• In the case of substrates suitable for bonding with an insufficient load-bearing capacity, the insulation can be applied using a rail system. This is particularly useful if substrate preparation is especially complex (e.g. if the old render has to be knocked off).

• With StoTherm Classic® and StoTherm Vario, the Sto-Polystyrene Rigid Foam Boards, M system type, must be used. Additionally, the PVC tracks must be used for fixing.

• With StoTherm Mineral, the Sto-Mineral Fibre Board 040, M system type, must be used. Additionally, the aluminium tracks must be used for fixing.

Notes

18 | Insulation board fixing Note: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions.



Mechanical fixing with rail system

01/03.13

W 020System section (vertical section): Rail fixing



EN

Rev. no.

62,5

cm

=

50 c

m =

-

Sto-Intermediate Track

Sto-Connecting Track

old render (non-load bearing)

wall construction

additional adhesive fixing dab perinsulation board (>= 20 %)

insulation board for rail fixing



Caution: Prevent rear ventilation!

cap

insu

latio

n bo

ard

mad

e of

EPS

Sto-

Min

eral

Fib

re B

oard

dowel in accordance with technicalapproval

dowel


STO-HQ- -GEN

Apply adhering dots to the insulation boards. After applying pressure to the wall, the bonded proportion must be at least 20% on both the insulation board and on the substrate.

Fix the Sto-Starter Track with suitable dowels. Install the dowels with a max. spacing of 30 cm. Dowels meeting the European Technical Approval or national application guidelines and matching the respective wall structure must be used. Compensate for any unevenness using packing shims.

1

2

Facade insulation system with mechanical fixing (rail system)

Insulation board fi xing

Mechanical fi xing with Sto-Rotofi x plus

Dowel patterns for Sto-Mineral Fibre Board 040

Dowel patterns for polystyrene rigid foam boards

Dowels/m2 Dowel pattern Dowels/m2 Dowel pattern

4 12

6 14

8 16

10 18

Dowels/m2 Dowel pattern Dowels/m2 Dowel pattern

8 14

10 16

12 18

01/03.13

RF 125Plinth (vertical section): Splash water zone, connection with Sto-Rofofix plus



EN

Rev. no.

slope

splash zone strip

Sto-Rotofix plus

wall construction

insulation board


finishing render

Sto-Plinth Profile PH

old render

Note: Start with the bottom edge of theinsulation board 50-80 cm below thebottom edge of the cellar ceiling.Caution: Thermal bridge!

dowel

.approx. 30 cm

appr

ox. 3

0 cm

cavit

y

STO-HQ- -GEN

Insulant strip made of mineral wool toavoid rear ventilation

Sto-Starter Profile PH-K

.

Facade insulation system with mechanical fi xing (Sto-Rotofi x plus), plinth formation

• In edge and corner areas, additional dowels must be fi tted (e.g. starter track).

• The relevant European and/or national approvals apply.

Notes

• Substrates not suitable for bonding can be mechanically insulated using Sto-Rotofi x plus. This is particularly useful if substrate preparation is especially complex (e.g. if the old render has to be knocked off).

• With StoTherm Classic® and StoTherm Vario, the Sto-Polystyrene Rigid Foam Boards, groove and tongue construction type, must be used.

• With StoTherm Mineral, the Sto-Mineral Fibre Board 040 without groove and tongue must be used.

• For further information on fi xing with Sto-Rotofi x plus, we recommend the Sto-Rotofi x plus application guideline.

Notes

Insulation board fi xing | 19

When inserting the dowels, observe the minimum edge distance of 12 cm.

Info 12 cm

12 cm

Note: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions. The detailed technical specifi cations and information on the products contained in the Technical Data Sheets and approvals must be observed.

Screw in the dowel screw using the driving tool until it sits firmly in place. When tightening the screw, the Sto-Rotofix plus must be reset.

Using the setting and adjustment tool, align the insulation board precisely. Spacing from the wall:Sto-Rotofix plus green (E1/B3) = max. 3 cm Sto-Rotofix plus black (E100/B300) = 3 to 7 cm

5

6

Screw the expanded polystyrene rod into the drill hole and cut off flush with a sharp blade. Alternatively, the drill hole can be filled with foam insulation. In case of mineral fibre boards, seal the drill hole using mineral fibre remnants.

7

Grind the surface until it is even.8

• EPS insulation boards must always be fixed with the Sto-Rotofix plus with the tongue facing upwards and in the direction of laying.

• No boards shorter than 50 cm may be used at building corners.• Window lintel boards must have a minimum width and a minimum

height of 30 cm.

Notes

20 | Insulation board fixing The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.


Mechanical fixing with Sto-Rotofix plus

Screw in the screw coil using the driving tool. The screw coil must always be screwed in at a 90° angle to the insulation board.

2

Use a stop drill bit to drill a hole right through the screw coil. With a rotating drill, ventilate the drill hole several times. Do not use the hammer action on a drill when drilling holes in perforated bricks.

3

Use the setting and adjustment tool to press the dowel with the pre-assembled screw through the screw coil until the tool makes contact with the screw coil (checking the setting depth).

4

Using the driving tool, drill a hole approx. 10 cm in depth. Pull out the screwdriver in slightly circular movements.

1

Base coat

Preliminary works before base coat application in the case of EPS insulation boards

Unavoidable joints between the insulation boards must be sealed with Sto-Pistol Foam SE. After the filler foam has dried, smoothly cut off protruding foam.Use insulant strips to seal joints with a width greater than 5 mm.

1

Grind the insulation boards until smooth. The sanding dust must be removed from the facade.

2

Sto-Filler Foam Pistol Profi IWith the Sto-Filler Foam Pistol Profi I, the special taper allows the application of reducing needles that enable cavities or cracks as small as < 1 mm to be filled.

Product tip

• Due to the extraordinary elasticity of the StoLevell Classic base coat used with StoTherm Classic®, diagonal reinforcement is not required. The lightness value of the top coat, however, must be ≥ 20%.

• The window or door connection, which is resistant to driving rain, must be produced using Sto-Seal Beads and/or Sto-Joint Water-proofing Tape. When using Sto-Seal Beads, the mesh of the seal beads must first be embedded at the internal reveal sides in the base coat. See the “Window connection” section on page 37 onwards.

Notes

The internal reveal corners are reinforced with Sto-Glass Fibre Mesh. The mesh flanges must be at least 10 cm long.

Produce the external reveal corners using the Sto-Mesh Angle Bead Standard. Cut the mesh angle bead to size as appropriate, position it and embed it full-surface into the base coat. The mesh angle bead must overlap the internal corners of the mesh by at least 10 cm.

2

3

1 At the corners of window and door openings, diagonal reinforcement must be installed and embedded in the base coat before the base coat is applied. The dimensions are approx. 20 x 40 cm. The longitudinal edge must be set precisely to the corner point of the opening.

Note: Under the conditions listed above, diagonal reinforcement is not required with the StoTherm Classic® system.

Reinforcement of reveals

Base coat | 21The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.

Prior to reinforcement, it is important to check carefully whether the insulation boards are tight-butted and honed even. A smooth insulant surface free of open joints prevents, amongst other things, cracks as well as joint marks on the top coat.

Note

Embed the Sto-Glass Fibre Mesh into the base coat across the entire wall (overlapping the opening).

4

Reinforcement

Apply the base coat using the square trowel or by machine at a width of 110 to 120 cm across the entire surface.

1

Embed the mesh into the still moist base coat. The mesh strips must overlap by 10 cm. Then smooth the base coat using a wide trowel.

2

Sto-Glass Fibre MeshThe Sto-Glass Fibre Mesh is flexible and easy to apply. The mesh format, with a width of 1.10 m (in the case of horizontal mesh embedding), covers exactly one scaffolding platform with two mesh strips. Alternative: Sto-Shield Mesh AES for protection against electro-smog.

Product tip

Silo and machinery equipmentVarious system components can be delivered in the silo. A more efficient application can be achieved by using silo and machinery equipment.

Tip

22 | Base coat The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.

Base coat

Cut off the mesh at an angle of 45° along the reveal edge. When cutting to size, the corners in particular must be clean and precise.

Important: Before applying the base coat, check all edges for mesh projections and cut them off if necessary.

5

6 Work the mesh into the base coat again around the area of the cutting edges.

Reinforcement of reveals

Sto-Lintel Corner Mesh AngleThe use of the Sto-Lintel Corner Mesh Angle for internal corner and reveal formation lowers labour costs as internal reveal corners do not need to be reinforced.

Product tip

• The specified drying times after bonding the insulation boards must be observed.

• Sufficient weather protection must be provided during the application and drying time of the base coat.

Notes

Top coat

Finishing render

After the intermediate coating/base coat has dried through, the finishing render is applied wet in wet. The surfaces must be seamlessly coated.

After the base coat has dried through, apply the pigmented priming paint coat (Sto-Primer or StoPrep Miral) to the entire surface of the reinforcement using a roller.

1

2

• If a rilled render texture is not desired, the intermediate coating can be omitted when using StoTherm Classic®.

• Sufficient weather protection must be provided during the application and drying time of the intermediate coating and/or finishing render.

• The finishing renders can be tinted in up to 800 colour shades of the StoColor System.

Notes

Top coat | 23

StoLotusan® K/MPFinishing render with Lotus-Effect® Technology; dirt runs off with the rain.

Product tip


Finishing renderRender textures

Free-style textured render (MP)Fine-grained renders are applied and textured using a paint brush, spatula, mason’s trowel, sponge, etc..

Rilled render texture (R)Rilled renders can be textured in different ways following application (horizontal, vertical and round).

Stippled render texture (K)A stippled render is applied based on the grain size and textured with a suitable tool.

Lightness valueIn the case of external wall insulation systems, there are limit values for the lightness value of the top coat.The following limit values apply:• StoTherm Classic®: ≥ 15%• StoTherm Vario: ≥ 20%• StoTherm Mineral: ≥ 20%The lightness value is based on the percentaged quantity of light reflected by a surface (100% = white, 0% = black).

Note

24 | Top coat

BondingComb the StoDeco Coll onto the substrate and rustications using the floating-buttering method. Press the rustications onto the wall across the entire surface. Full-surface bonding is achieved by moving the rustications gently back and forth.

After through-drying, remove any remaining adhesive from the butt joints.

Depending on the desired surface texture, prime with Sto-Primer (rough) or StoColor Maxicryl (smooth). The intermediate coating and top coats are applied with StoColor Maxicryl.

Create the butt joint through a broken edge using a V bevel or all-around edge formation, i.e. break the edges by means of light sanding.

Tip

For detailed information on applying StoDeco Profiles and StoDeco Rustications, we recommend the StoDeco application guideline.

Note

StoDeco Rustications

1

2

3


Top coat

1

2

4

3

StoDeco Profiles are easy to cut to size using the StoDeco Profile Hacksaw. Remove dust from the full surfaces of all cutting edges using a hand brush (and compressed air, if available).

Comb the StoDeco Coll onto the substrate and profile with the toothed trowel (6 x 6 mm) using the floating-buttering method. Adjust the toothing based on the unevenness of the substrate. The profile joints must also be bonded together across the full surface as described. The adhesive seam should be approx. 3 mm thick.Hold in place with lintel nails during initial drying. Remove any excess adhesive after initial drying.

Dowel window sills and larger profiles in accordance with the current system specifications. Fix the profile with an additional dowel approx. 20 cm from the end of the profile. The dowel must be recessed approx. 20 mm in the profile. Fit a foam cap to the dowel head, then fill and smooth the dowel punch hole with StoDeco Coll.Alternative: Fit a 5 mm thick StoDeco Cap. Grind until smooth.

Using a round jointer, form the material oozing out from below into a fillet. This prevents water from penetrating behind the profile.

The elements to be butted must be chamfered on-site.

In order to achieve a surface texture similar to sandstone, StoDeco Profiles are pre-coated with Sto-Primer and then twice top coated with StoColor Maxicryl. A smooth surface can be achieved with three coats of StoColor Maxicryl without primer.

StoDeco Profiles

5

Top coat | 25

Top coat

When using StoSilt Glazed Brick Slips, always dowel through the reinforcing mesh. Fill and smooth the facade dowel before installing the glazed brick slips, then apply and tooth StoColl KM bonding mortar.

Note: When using the StoTherm Classic® system, the surface must be coated with StoPrep Contact before applying the bonding mortar.

Precise measuring of the surface is a prerequisite for optimum installation.

Sanded or grained surfaces are pointed using StoColl FM-K and a rounded jointer.

Slurry point smooth surfaces (smooth glazed brick slips and tiles) with StoColl FM-S.

Due to the high dead weight of the top coat, the facade insulation system must be dowelled through the mesh. Sto-Glass Fibre Mesh G should always be used as the reinforcing mesh. For detailed information on applying facade cladding, we recommend the “Cladding for facade insulation systems” application guideline.

Note

StoSilt Glazed Brick Slips

1

2

3b

3a


01/03.13

W 100Plinth (vertical section): Ground and splash water zone



EN

Rev. no.

wall construction


waterproofing in accordance with DIN18195

adhesive

Apply StoFlexyl as adhesive to the entiresurface.

Install the Sto-Plinth Insulation board upto 30 cm above ground level.

insulation board


fleece-laminated ribbed sheeting asprotection against mechanical damage

gravel layer with drainage (splash zonestrip)

slope

_

Apply StoFlexyl twice as slurry up to 5 cmabove ground level.

plinth coating

approx. 30 cm

≥ 5

cm

STO-HQ- -GEN

Plinth

Plinth formation with perimeter insulation

Connection in the ground and splash zone

Plinth insulation in the splash zone

Pre-coat the plinth area with 10% water-diluted StoFlexyl up to approx. 30 - 50 cm above ground level (mix StoFlexyl 1:1 with cement). Observe the drying time.

Once the material has dried off (mixed 1:1 with cement), apply undiluted StoFlexyl (mixed 1:1 with cement) as an adhesive with a trowel. Then ridge it or tooth it with the toothed trowel (15 x 15 mm).

Bond Sto-Plinth Insulation Boards that are cut at an angle across the full surface and install tight-butted.

Install insulation boards as described on page 11 onwards and 48 onwards.

Tip: When installing StoTherm Classic®, the insulant material can be changed (Sto-Plinth Insulation Board/facade insulation board) at ground level.

1

2

3

4

01/03.13

W 135-10Plinth (vertical section): Ground and splash water zone with perimeterinsulation



EN

Rev. no.

slope

splash water protectionsplash zone strip


adhesive

insulation board


Apply a finishing render and, if necessary,a paint coat.waterproofing in accordance with DIN18195Apply StoFlexyl as adhesive to the entiresurface.



insulation board made of XPS

plinth coating

.approx. 30 cm

STO-CH- -GEN-P

Plinth formation without perimeter insulation, with a change of render

26 | PlinthNote: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions.


• In the case of plinth insulation in a splash zone, existing building waterproofing is required, which has already been installed on-site.

• Splash zones cover all areas where the facade is exposed to splash water. Apart from the plinth area, this applies for example to balcony areas as well as to loggia and roof connection areas. The splash zone is approx. 30 - 50 cm high.

Notes

Plinth | 27

Plinth

Plinth insulation in the splash zone

Embed the Sto-Glass Fibre Mesh into the moist base coat, ensuring that the mesh strips overlap by 10 cm.

6

Apply the base coat onto the Sto-Plinth Insulation Board and right up to the building waterproofing of the external cellar wall.

Apply base coat to the entire surface.

5

In the case of organic finishing renders, brush the plinth twice with 10% water-diluted StoFlexyl (mix StoFlexyl 1:1 with cement).

Note: The coating is applied at least 5 cm above ground level. In areas reaching below ground level, the coat starts from the external cellar wall.

8

A splash zone strip/gravel bed with drai-nage is essential in this plinth area.To allow the water to trickle down, a 20 - 30 cm wide strip of gravel should be laid.The insulation system is additionally protected by ribbed sheeting.

12Embed a render stop profile at the height of the plinth insulation board. Produce the joints in a tight-butted way.

7

Apply the finishing render to the facade as described on page 23.

9

Apply finishing render to the plinth.11

Once the StoFlexyl coat has dried, the intermediate coating of Sto-Primer is applied.

10


Plinth connection

Free of thermal bridgesVersion I

01/03.13

W 135Plinth (vertical section): Ground and splash water zone with insulation boardprojection



EN

Rev. no.

wall construction

adhesive

insulation board



slope



waterproofing in accordance with DIN18195Apply StoFlexyl as adhesive to the entiresurface.




finishing renderplinth coating


_

approx. 30 cm

STO-HQ- -GEN

Facade insulation on top of the plinth insulation

Insert the lower flange of the Sto-Plinth Profile PH into the joint between the plinth insulation and the facade insulation.

Use Sto-Starter Track Connectors L to join the plinth profiles. Cut the connectors to size as needed. They should be at least as long as the visible width of the plinth profile underside.The strip of mesh of the plinth profile overlaps in the joint area.

2

1

Once the plinth reinforcement has dried, clean the joint between the plinth profile and the plinth insulation. Then seal with StoSeal F 505.

5

Apply the base coat to the insulation boards in the area of the plinth profile. Then embed the perforated flange and integrated strip of mesh for the plinth profile in the still moist base coat.

3

Install surface reinforcement as described on page 22.Cut off the Sto-Glass Fibre Mesh flush with the upper edge of the weather groove.

4

Observe the “Plinth insulation in the splash zone” worksteps on page 26 onwards when installing the plinth insulation.

6

Note: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions. The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed. 28 | Plinth connection

Plinth insulation following facade insulation

Plinth connection

Free of thermal bridgesVersion II

01/03.13

W 135-18Plinth (vertical section): Ground and splash water zone with insulation boardprojection and retrofitted plinth insulation



EN

Rev. no.

wall construction

adhesive

insulation board



Sto-Plinth Profile PH-A

slope



waterproofing in accordance with DIN18195Apply StoFlexyl as adhesive to the entiresurface.




finishing render

Sto-Starter Profile PH-P

Sto-Joint Waterproofing Tape inaccordance with Technical Data Sheet

_

approx. 30 cm

plinth coating

STO-HQ- -GEN-P

Before starting installation work, determine the height of the plinth and mark this with a plumb line. Then brush the plinth area with 10% water-diluted StoFlexyl (mix StoFlexyl 1:1 with cement).

1

Fix Sto-Starter Profile PH-K using Sto-Screw Dowel S UEZ 8 according to the height of the plinth. Install the dowels with a max. spacing of 30 cm. Use Sto-Packing Shims to compensate for unevenness in the wall.

Mitre the starter profile in the corner area.

2

3 Fit facade insulation boards onto the starter profile.

Apply the base coat to the facade insulation boards in the area of the plinth profile.

4 Fix the plinth profile to the underside of the first insulation board row using the integrated self-adhesive tape.

5 Embed the perforated flange and integrated strip of mesh for the plinth profile in the still moist base coat.Proceed with full-surface reinforcement as in version I.

6 Attach the Sto-Joint Sealing Tape Lento to the underside of the plinth profile.Then insulate the plinth.Observe the “Plinth insulation in the splash zone” worksteps on page 26 onwards when installing the plinth insulation.

Note: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions. The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed. Plinth connection | 29

30 | Plinth connection

Plinth connection

Free of thermal bridgesVersion III

01/03.13

W 125Plinth (vertical section): Splash water zone, above ground level



EN

Rev. no.

wall construction

Note: Start with the bottom edge of theinsulation board 50-80 cm below thebottom edge of the cellar ceiling.

cap

old render

adhesive

insulation board



slope


Countersink the dowel.

dowel

splash zone strip

_

approx. 30 cm

appr

ox. 3

0 cm

STO-HQ- -GEN

Sto-Starter Profile PH-K

.

Plinth connection with uninsulated plinth

Then fit the facade insulation boards onto the starter profile.

Insert the Sto-Plinth Profile into the joint between the facade insulation and Sto-Starter Profile PH-K.

Fix Sto-Starter Profile PH-K using Sto-Screw Dowel S UEZ 8 according to the height of the plinth. Install the dowels with a max. spacing of 30 cm. Use Sto-Packing Shims to compensate for unevenness in the wall.

Mitre the starter profile in the corner area.

Apply the base coat to the facade insulation boards in the area of the plinth profile. Embed the perforated flange and integrated strip of mesh for the plinth profile in the still moist base coat.Proceed with full-surface reinforcement as in version I.

2

1

3

Creating the lower system connection using the Sto-Starter Profile PH-K and the Sto-Plinth Profile PH has several advantages:• Projection is easy to adjust• Flexible: All insulation thicknesses

between 60 and 200 mm are covered by three starter profile versions.

• Closed at the bottom

Product tip

The Sto-Plinth Profile PH is available in three different drainage area designs:• Sto-Plinth Profile PH, 3 mm, for

thin-layer base coats• Sto-Plinth Profile PH, 6 mm, for

medium-layer base coats• Sto-Plinth Profile PH, 10 mm, for

thick-layer base coats

Product tip


Embed the perforated flange and integrated strip of mesh for the plinth profile in the still moist base coat. Proceed with full-surface reinforcement as in version I.

4

Plinth connection/external wall system transition | 31

Plinth connection

Building with unheated basement

Starter tracks made of aluminium have a high thermal conductivity. A plinth connection with the Sto-Starter Track Universal shown here should therefore only be used when the following conditions are satisfied:• The basement is unheated.• The cellar ceiling is insulated.• The facade insulation ends approx. 50 - 80 cm below the height of

the cellar ceiling.• The starter track is thermally separated from the wall structure by

means of packing shims or a thermal stop (e.g. Sto-Joint Sealing Tape Lento).

Note

01/03.13

W 125-03Plinth (vertical section): Splash water zone, above ground level



EN

Rev. no.

wall construction

Note: Start with the bottom edge of theinsulation board 50-80 cm below thebottom edge of the cellar ceiling.

cap

old render

adhesive

insulation board


splash zone strip

slope


Sto-Starter Track Universal

Sto-Clip-on Bead Perfekt


dowel

.approx. 30 cm

.ap

prox

. 30

cm

STO-HQ- -GEN-P

Uninsulated plinth in an unheated cellar area


External wall/system transition

Area subject to a risk of impacts

Apply and then smooth the base coat.

Embed the Sto-Armour Mesh in the base coat.

Tip: To ease application, it is recommend-able to cut the Sto-Armour Mesh to size early and put it down evenly.

Do not overlap the mesh but rather abut it.

Once the base coat has dried, apply the reinforcement as described on page 22. Lay the mesh strips and ensure a sufficient offset towards the joints of the Sto-Armour Mesh.

Note: On the surface with the Sto-Armour Mesh, a levelling filler coating with a width of approx. 30 cm must be applied to the transition to the rest of the facade surface due to the higher coating structure.

1

2

3

4

Sto-Armour Mesh is a reinforced glass fibre mesh. It increases the compressive strength in critical areas (e.g. the entrance area). When the StoTherm Classic® external wall insulation system is used, this results in an impact resistance of over 60 joules.

Product tip

External wall/system transition

Corner formation

Apply the base coat in the corner area. Then press down the Sto-Mesh Angle Bead Standard, align it and embed it in the base coat.

At building corners, the insulation boards should be toothed. Saw off any protruding insulation boards at external corners. Grind the insulation boards to ensure that they are even.

When applying the surface reinforcement, guide the Sto-Glass Fibre Mesh into the corners. Overlap the mesh angle bead by at least 10 cm. Cut off protruding mesh. For full-surface reinforcement see page 22.

2

1

3

Sto-Mesh Angle BeadThe use of corner angles is recommended for corner formations. The Sto-Mesh Angle Bead Standard is an angled strip of mesh (90° angle) reinforced with a plastic rail.

Product tip

32 | External wall/system transition

Connect the finishing render (Fig. StoSuperlit natural stone render) to the render stop profile from below.

Render stop

Before starting installation, determine the position of the stop profile. Position the Sto-Render Stop Profile, press it into the base coat mortar and align it using the spirit level.

Embed the render stop profile in the base coat mortar. Then remove any excess material and smooth over the mesh of the profile.

Apply the intermediate coating (or not if using StoTherm Classic®) and the finishing render. Peel off any protruding material along the render stop profile.

1

2

3

4

Sto-Render Stop ProfileTo produce flawless render stops, the use of render stop profiles is recommended. The Sto-Render Stop Profile consists of a profile with a stop and integrated glass fibre mesh. 3, 6, 10, 15 and 20 mm versions are available.

Product tip


Sto-Corner Angle Mesh RollAlternatively: The Sto-Corner Angle Mesh Roll Ideal is an edge profile with a variable angle and integrated glass fibre mesh. The stable plastic edge is particularly advantageous.

External wall/undersides | 33

External wall/undersides

Drip edge formation

Sto-Drip Edge ProfileThe use of special drip edge profiles in areas at risk of dripping water is recommended. Balcony undersides, window lintels and roller shutter boxes will be much better protected.

Product tip

1 Apply the base coat to the corners of the building element. Apply the drip edge profile corner piece to the fresh base coat.

Connect the Sto-Drip Edge Profile to the corner piece and embed it in the base coat.

2

01/03.13

W 710Balcony/terrace (vertical section): Drip edge with drip edge profile



EN

Rev. no.

mm

10cap

wall construction

Connect the Sto-Drip Edge Profiles in thejoint area.

cap

Insert the Sto-Drip Edge Profile into thereinforced base coat.

insulation board



adhesive



STO-HQ- -GEN

Drip edge formation with drip edge profile


Align the Sto-Drip Edge Profile.3

4 Move the Sto-Glass Fibre Mesh up to the drip edge profile. Then embed the mesh in the base coat. Mesh joints should overlap by at least 10 cm.

Note: Alternatively, the corner can be formed by means of a mesh angle bead.

Once the base coat has dried through, apply the intermediate coating (or not if using StoTherm Classic®) and the finishing render. Remove any protruding finishing render from the edges.

6

Reinforce the underside of the building element with Sto-Glass Fibre Mesh. The mesh should overlap by at least 10 cm at the connection with the reinforced fa-cade.

5

Fire barrier

01/03.13

W 405Window/door (vertical section, view): Fire strip at the lintel



EN

Rev. no.

cm cm

cm

30 30

20

lamella/mineral wool

wall construction

adhesive



insulation board > 10 cm

fixing and wind-proofing of the windowsin accordance with the windowmanufacturer's specifications

≤ 4

cm


STO-HQ- -GEN

Sto-Mesh Angle Bead

01/03.13

W 407Window/door (vertical section): All-around fire strip



EN

Rev. no.

cm>

cm20

50

> cm10

wall construction

Apply adhesive to the entirelamella/mineral wool surface.

adhesive

insulation board made of EPS




Sto-Seal Bead in accordance withTechnical Data Sheet or Sto-JointWaterproofing Tape in accordance withTechnical Data Sheet

max

.

STO-HQ- -GEN

Sto-Mesh Angle Bead

Version II: Fire barrier through all-around fire strip

Version I: Fire barrier through lintel formation

34 | Fire barrier/windows and doors

Windows and doors

Installation of StoFentra Profi

Resistant to driving rainThe StoFentra Profi window sill is resistant to driving rain thanks to upstand profiles sealed on all sides. The lower part of the upstand profile is welded along the entire length of the window sill.

Tension-freeThe patented side upstand profiles have an expansion strip. This elastic support accommodates length changes caused by thermal influences.

System connectionsConnections to other building elements must be formed via a connection joint with joint waterproofing tape.

For detailed information on installing the StoFentra Profi window sill, we recommend the StoFentra Profi application guideline.

Note

01/03.13

W 501Window sill (ground plan, vertical section, view): Connection of StoFentraProfi



EN

Rev. no.

A

sketch

adhesive

reveal insulation board thickness min. 3cm



StoFentra Profi

Sto-Joint Waterproofing Tape inaccordance with Technical Data Sheet,all-around

Insulant

Arrange the Sto-Window Sill Anchors inaccordance with the application guideline.


ground plan

section A

cap


STO-HQ- -GEN

StoFentra Profi connection


The StoFentra Profi consists of a window sill (1, above image) and upstand profiles (2, above image). Expansion strips are integrated into the bottom part of the upstand profile which accommodate length changes caused by thermal influences (image 2).

Product tip

1

2

Sketch

Windows and doors | 35

Windows and doors

Installation of StoFentra Profi

Position the window sill, align it and fix it to the window frame using window sill screws.

Mark and attach StoFentra Window Sill Brackets with a spacing of approx. 60 cm to the underside of the window sill. Then fix with suitable dowels.

To seal the connection joint, apply the Sto-Window Sill Tape to the screw-on stem and guide it around the corner by approx. 5 cm.

2

3

1

Fill cavities with Sto-Pistol Foam SE below the window sill.

Note: Support the window sill when filling foam from underneath.

4

To waterproof the connection joints, bond Sto-Joint Sealing Tape Lento to the upstand profile and the underside of the window sill flush with the insulation boards.

5


Do not bond the Sto-Joint Waterproofing Tape around the upstand profiles under tension, as it must still be able to expand once the cut insulation board has been positioned.

6

Measure the insulation board at the window sill upstand profile. The final surface of the window reveal must be flush with the inside of the upstand profile.

Once the insulation board adhesive has dried through, fill the cavity between the window sill and the insulation boards with Sto-Pistol Foam SE.

7

8

Wrong:The joint waterproofing tape is not compressed, which means that expansion is not possible.

Right: The joint waterproofing tape is compressed, which means that expansion is possible.

Important note

This installation method is particularly suitable for the Sto-Balcony Threshold and the Sto-Window Sill Stone.

Note

Windows and doors

Retrofitting of the balcony threshold or window sill

Retrofitting of the balcony threshold

01/03.13

W 730Balcony/terrace (vertical section): Connection of a balcony treshold



EN

Rev. no.


Complete reveal. Install Sto-BalconyTreshold.

mortar bed (e.g. made of StoFlexyl)

permanently elastic waterproofing joint inaccordance with IVD Data Sheet

projection >= 40 mm

plinth coating

fixin

g an

d w

ind-

proo

fing

of th

e w

indo

ws

in a

ccor

danc

e w

ith th

e w

indo

wm

anuf

actu

rer's

spec

ifica

tions

Install Sto-Balcony Threshold with lateralupstanding edges and slope.In case of larger insulation boardthicknesses install the Sto-TresholdConsole PH.

mortar bed (e.g. made of StoFlexyl)


slope

waterproofing in accordance with DIN18195

Apply StoFlexyl adhesive to the entiresurface.

Sto-Plinth Insulation Board

ribbed sheeting

splash zone strip

STO-HQ- -GEN

Sto-Window Sill Tape

36 | Windows and doors

Grind the upper side of the facade insulation to create a slope of 8% (5°).

1

Bond the self-adhesive StoGuard Mesh in the reveal corners approx. 5 cm high. Then guide the mesh from the lower window frame across the balcony threshold or parapet to the facade.

2

Coat twice with StoFlexyl. For the first application cycle, mix StoFlexyl 1:1 with cement. For the 2nd application cycle, mix StoFlexyl 1:1 with cement and dilute with approx. 10% water.Then reinforce the facade and reveal.

3

To seal the connection joint, apply the Sto-Window Sill Tape to the screw-on stem and guide it around the corner by approx. 5 cm.

4

Bond Sto-Joint Sealing Tape Lento to the lateral upstanding edges in accordance with the reveal depth.

5

Apply StoFlexyl cement mixture to the hardened waterproofing trough. Apply a line of adhesive to the leading edge.

Note: Alternatively, StoColl Fix can be used for bonding.

6

Bond the balcony threshold or window sill to the waterproofing trough, align and screw onto the lower window frame. Then remove any excess adhesive beneath the balcony threshold or window sill and seal the joint.

7


Windows and doors | 37Note: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions. The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.

Windows and doors

Window connection -general information

•Suitable

1)Doesnotapplytowindowsthatareflushwiththefinishedfacadeorprotrudefromit.2)Canalsobeusedwithaninsulantthicknessofupto200 mmifthewindowis≤2m².3)Inthecaseofprofilejoints,jointwaterproofingtapemustadditionallybeappliedalongtheentirelengthofthesealbead.

• Windows and doors must be fixed in accordance with the latest technology in order to prevent undue movement. The corresponding relevant guidelines (e.g. those provided by the German RAL Quality Assurance Association for Windows and Doors) must be observed.

• The substrate (e.g. window frame) must be level, dry, stable and free of substances which can adversely affect the adhesive bond (e.g. grease, dirt). Cleaning is advisable. An adhesive sample section should be produced. In the case of special (e.g. dirt-repellent) surface finishes, pre-treatment may be required (after consulting the door or window supplier).

• Only fix the seal beads immediately before installing the adjacent insulation boards.

• If the length of the connection is less than 2.30 m (or 2.40 m with Sto-Seal Bead Milano), apply the seal beads in one piece.

• If the length of the connection is longer, always use the profile in its original length at the bottom and cut to size at the top.

• In the corner area (window lintel), first place the vertical seal beads in their maximum length and then install the horizontal profile between the vertical profiles.

• Sto-Seal Beads may not be used for the connection of windows that are flush with the rendered facade or for window elements that protrude from the (finished) facade.

Overview of Sto-Seal BeadsArea of application

Window in masonry(wall structure), recessed

Window flush with masonry(wall structure)

Window in front of masonry(wall structure), in the insulant1)

Sto-Seal Bead Supra ≤3m2 ≤10m2 ≤10m2 ≤10m2

Sto-Seal Bead Perfekt ≤2.3m2(withoutjoints)

≤6.8m2 ≤6.8m2 ≤6.8m2 ≤6.8m2

Insulant thickness ≤160 mm ≤300 mm ≤160 mm ≤300 m2 ≤300 mm

Sto-Seal Bead Supra

Sto-Seal Bead Perfekt 2)

Sto-Seal Bead Milano 3) 3)

Sto-Seal Bead Standard

Sto FassadendämmsystemeAnschluss Fenster mit Montageschiene (M ca. 1:2,5)

W 440

Rev.-Nr. 01/04.11

Hinweis: Dieses Detail ist ein allgemeiner Planungsvor schlag, welcher schematisch die Ausführung eines WDVS darstellt . Anwendbarkeit und Voll-ständigkeit sind vom Verarbeiter /Kunden beim jeweiligen Bauvorhaben eigenverantwortlich zu prüfen. Angrenzende Gewerke sind nur schematisch.Alle Vorgaben und Annahmen sind auf die ör tlichen Gegebenheiten anzupassen bzw. abzustimmen. Die jeweiligen technischen Vorgaben in denMerkblättern und Systemzulassungen sind zu beachten.

Sto FassadendämmsystemeAnschluss Laibung, Fenster mauerbündig (M ca. 1:2,5)

W 420

Rev.-Nr. 01/04.11


Sto FassadendämmsystemeAnschluss Laibung, Fenster versetztmit Anputzleiste nach TM (M ca. 1:2,5) W 425

Rev.-Nr. 01/04.11


Window connectionVersion II

Windows and doors

Window connectionVersion I

Measure the length of the first vertical seal bead and then mitre the seal bead.

Immediately before installing the facade insulation boards, attach joint waterproof-ing tape to the window frame.

Remove the protective film from the adhesive tape on the track and position the Sto-Seal Bead Supra on the upstand profile of the window sill. When using other seal beads, the joint between the upstand profile and the seal bead must first be sealed using joint waterproofing tape.Align the Sto-Seal Bead and attach firmly to the window frame.

Then insulate the facade and, if necessary, the reveal (in the case of windows/doors recessed in the masonry).

Adjust and fit the horizontal seal bead between the vertical tracks, then align and fix in place.

Note: Always install the vertical seal beads first. To cover the window, the necessary film can be fixed to the integrated self-adhesive tape of the Sto-Seal Beads.

After reinforcing the reveal (see the “Reinforcing reveals” section on page 21 onwards), separate the still moist base coat from the joint waterproofing tape using a struck joint. The finishing render is also separated from the joint water-proofing tape using a struck joint.

1 1

2 2

3 3

After insulating the facade and, if necessary, the reveal (in the case of windows/doors recessed in the masonry), apply the base coat to the reveal. Work the mesh into the base coat. The overlap with the reveal reinforcement must be at least 10 cm.

To further reinforce the reveals, see the “Reinforcing reveals” section on page 21 onwards.

4

5

38 | Windows and doors The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.

Roof connection | 39Note: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions. The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.

Connection to eaves with roof projection, ventilated

01/03.13

W 300Roof (vertical section): Connection to a ventilated roof construction



EN

Rev. no.

ventilation

ventilation

Recommendation: Install the carrier board.

adhesive


wall construction


Sele

ct a

dhes

ive a

ccor

ding

to su

bstra

te.

insulation board



Install Sto-Roof Vent Profile Air into thereinforcement.

STO-HQ- -GEN

Connection to eaves with roof projection, not ventilated

Connection to a non-ventilated roof

Prepare sloping insulation boards according to the roof slope. Position the prepared insulation boards and mark the roof rafter. Then cut the insulation boards precisely to size.

Position the cut insulation boards again and mark the leading edge on the underside of the roof and the rafter.

To waterproof the connection joint, apply Sto-Joint Sealing Tape Lento across its entire length onto the marked leading edge of the insulation board.

1

2

3

4 Apply adhesive to the full surface of the insulation boards. Insert the insulation boards and install tight-butted. For technical reasons, an area must always be recessed below the fitting piece. Adjust and fit the insulant in this recess later (after installing the top row of boards).

5 Attach adhesive tape all around the roof rafters.

Roof connection

Connection to a ventilated/non-ventilated roof

01/03.13

W 305Roof (vertical section): Connection to a non-ventilated roof construction



EN

Rev. no.

alternative with Sto-Parapet Profilecap

wall construction


adhesive

insulation board


finishing render


STO-HQ- -GEN

A consistent transition from the EWIS and the roof insulation, which is free of thermal bridges, must be carefully planned and implemented.

Important

Roof connection

Measure and cut the Sto-Parapet Profiles to size with a small margin.

Apply the base coat.

Position the Sto-Parapet Profiles with a small spacing from the roof connection and embed in the moist base coat.

6

7

8

9 While reinforcing the surface, position Sto-Glass Fibre Mesh on the rafters and then cut them out. Cut off any protruding mesh on the rafters and parapet profiles. Then embed the mesh in the moist base coat.

40 | Roof connection

Connection to a non-ventilated roof

Sto-Rafter Template and Sto-Insulation Cutting DeviceThe insulation boards can be cut to size quickly and easily using the Sto-Rafter Template and the Sto-Insulation Cutter Device.

Product tip


Building element fixing | 41Note: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions. The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.

Connection to shutter guiding with StoFix Cap

Building element fixing

Fixing of rainwater pipes

01/03.13

W 600Shutter (ground plan): Connection of a shutter guide track with StoFix Cap



EN

Rev. no.


StoFix Cap

StoColl Fix

shutter guide track

StoFentra Profi

adhesive

insulation board


cap



STO-HQ- -GEN

Sto-Mesh Angle Bead

For detailed information on building element fixing with Sto installation elements, we recommend the StoFix installation element brochure.

Note

01/03.13

W 290External wall / system transition (vertical section): Rainwater pipe fixing



EN

Rev. no.

StoFix Zyrillo, StoFix Ashlar ND Mini orStoFix Ashlar ND Midi

fixing of the rain water pipe in accordancewith the manufacturer's specifications

wall construction

adhesive

insulation board



STO-HQ- -GEN


Overview of installation elements

StoFix CapInstallation underlay for fixing lightweight building elements, e.g. shutter guiding rails, signs.

StoFix SpiralFor subsequent fixing of lightweight building elements, e.g. bells or signs.

StoFix ZyrilloInstallation underlay for fixing lightweight loads, e.g. lamps, rainwater pipes, closet poles.

StoFix Ashlar ND Mini/MidiInstallation underlay for fixing lightweight loads, e.g. lamps, rainwater pipes, closet poles; compression underlay for medium-weight loads.

StoFix Ashlar HD MaxiCompression underlay for high compres-sive loads, suitable, for example, for awnings or handrails


StoFix Ashlar

StoFix Ashlar HD Maxi as a compression underlay for projection roof purlin and other building elements

01/03.13

W 270External wall / system transition (vertical section): Awning fixing



EN

Rev. no.

adhesive

Apply adhesive to the entire surface of theStoFix Ashlar HD Maxi (pressure plate).

insulation board

fixing of the awning in accordance withthe support structure planner'sspecifications

Caution: Plan for waterproofing (e.g.Sto-Joint Waterproofing Tape inaccordance with Technical Data Sheet)!

awning

wall construction



STO-HQ- -GEN


StoFix AshlarSubsequent installation

Cut the marked area out of the insulant.2

3 Apply adhesive to the full surface of the StoFix Ashlar and press evenly into the opening.

4 Fill joints with Sto-Pistol Foam SE. Once dry, cut off any foam that has oozed out and grind until smooth.

Mark the centre of the ashlar with a screw. Then apply the reinforcement and top coat. With the StoFix Ashlar ND Mini and Midi, lightweight loads can be attached once the facade is finished. The StoFix Ashlar HD Maxi is used as a compression underlay for anchoring heavy loads in the substrate. The maximum permissible loads must be observed.

5

Mark the StoFix Ashlar on the insulation board.

1

Note: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions. The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed. 42 | Building element fixing

Install the StoFix Ashlar as described on the right after installing the insulation boards. Alternatively, it can be installed when the insulation boards are bonded.

Note

The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed. Scaffold plug/structural expansion joints | 43

Scaffold plug

Fill the cavity behind the Sto-Scaffold Plug using a suitable insulant. Compress the Sto-Scaffold Plug by rolling it between the palms of your hands.

1

2 Insert the compressed scaffold plug into the scaffold anchor hole.

3 Apply the finishing render and level the transitions using a paint brush.

Structural expansion joints

Expansion joint formation

If expansion joints are required in the construction, these must also be formed within the EWIS. Both expanding joint tapes and suspension profiles are used for this.

Product tip

Sto-Expansion Joint ProfilesSto-Expansion Joint Profile Type E for level wall surfaces, Type V for offset wall surfaces (internal corners). Joint width between 5 and 30 mm.Important: The expansion joints must be filled with insulant in order to prevent thermal bridges.

Product tip

Sto-Scaffold PlugScaffold anchors leave behind holes in the insulated and rendered wall. Use the Sto-Scaffold Plug made of impregnated flexible foam to seal these scaffold anchor holes.

44 | Structural expansion joints


Version I: Expansion joint profile

Expansion joint profile, surface application

Expansion joint profile, corner application

01/03.13

W 800Expansion joint (ground plan): With Sto-Expansion Joint Profile Type E



EN

Rev. no.

Sto-Expansion Joint Profile Type E

adhesive

insulation board



STO-HQ- -GEN

01/03.13

W 805Expansion joint (ground plan): With Sto-Expansion Joint Profile Type V in aninternal corner



EN

Rev. no.

no bonding

Sto-Expansion Joint Profile Type V

adhesive

insulation board



STO-HQ- -GEN

Apply the base coat to the joint flanks and to approx. 20 cm of the adjacent surfaces.

Note: To avoid thermal bridges and for fire protection reasons, fill the rear area of the expansion joint with mineral wool before starting.

Use Sto-Expansion Joint Profile E and embed in the reinforcing compound. For even joint formation, a polystyrene strip is used as fixation and for alignment. The width of the polystyrene strip determines the width of the expansion joint.

The expansion joint profiles are installed from bottom to top. The expansion joint profiles are finished from the top and overlap by at least 2 cm.

1

2

3


Apply base coat to the adjacent surfaces. Embed Sto-Glass Fibre Mesh. Here the strip of mesh of the expansion joint profile overlaps by approx. 10 cm.

Important: Separate the expansion joint profile from the polystyrene strip using a struck joint.

4

5

Structural expansion joints | 45Note: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions. The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.


Once the base coat has completely dried through, apply and texture the finishing render.

6

7 Important: Separate the expansion joint profile from the polystyrene strip using a struck joint.

8 Carefully pull the polystyrene strip out of the expansion joint. Then rework the edges once again.

Version II: Expansion joint tape

Expansion joint tape, surface

01/03.13

W 810Expansion joint (ground plan): With expansion joint tape



EN

Rev. no.

Sto-Expansion Joint Tape in accordancewith Technical Data Sheet

adhesive


insulation board

Apply an organic finishing render.

Sto-Mesh Angle Bead

STO-HQ- -GEN

Version I: Expansion joint profile

Apply and texture the finishing render.

Then remove the adhesive strip while the finishing render is still moist.

46 | Structural expansion joints



Apply the base coat to the joint flanks and to approx. 20 cm of the adjacent surfaces.

Note: To avoid thermal bridges and for fire protection reasons, fill the rear area of the expansion joint with mineral wool before starting.

Set the Sto Mesh Angle Bead and embed the mesh of both flanges in the base coat.

The mesh angle bead is installed from bottom to top. The mesh angle beads are finished from the top with an overlap.

Note: Ideally, the Sto Mesh Angle Beads should overlap with a mesh protrusion of 10 cm.

4 Apply base coat to the adjacent surfaces. Embed Sto-Glass Fibre Mesh. Here the mesh of the mesh angle bead overlaps by approx. 10 cm.


Trowel off the corners.

6

Mask the Sto-Expansion Joint Tape before applying the finishing render.

After the base coat has completely dried through, bond the Sto-Expansion Joint Tape flush with the base coat onto an edge.

8

7

9

5


1

2

3

StoTherm Mineral/insulation board fixing (MW) | 47The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.

Additional information on application

StoTherm Mineral

The information up to page 46 also applies to the mineral external wall insulation system as far as possible. Any deviations are described on the following pages.

Note

Bonding

Insulation board fixing (MW)

Lamella insulation board made of mineral woolInsulation board made of mineral wool in accordance with EN 13162. High adhesive strength thanks to vertical fibres.

Sto-Mineral Fibre BoardInsulation boards made of mineral wool in accordance with EN 13162.

Bonding the insulation boardsImmediately after application of the bonding mortar (after 10 minutes at the latest), press, float into place and press-fit the insulation boards. Depending on the weathering, this time interval may be shorter. Excessive drying times of the bonding mortar on the insulation board or wall lead to the formation of a skin on the bonding mortar which can lead to adhesion problems.

The insulation boards must be precisely applied in a bond. There must be no open joints between the insulation boards. Unavoidable gaps must be sealed with equivalent insulants. In order to prevent thermal bridges, there must be no bonding mortar in joints or between the board joints. Damaged insula-tion boards must not be installed.

48 | Insulation board fixing (MW)

Full-surface bondingIn the case of smooth substrates, apply bonding mortar to the full surface of the insulation board. Toothing with a toothed trowel (15 x 15 mm). When doing so, do not hold the toothed trowel too flat. Use an emery board for board fixation.


1a


Bonding the mineral wool insulation board

Spot/edge bondingIn the case of uneven substrates up to 1 cm/m, apply a line of adhesive all around the edge of the boarding and - depending on the board format - three to six adhesive fixing dabs on the surface.


1b


Laying of the insulation boardsLay insulation boards from bottom to top, tight-butted in the bond and offset to the building corners. Press the boards firmly onto the wall. Remove any excess adhesive in order to prevent thermal bridges.

3

2a

2b

Bonding the lamella insulation board


Building height:

20 to 100 m

up to 20 m

When using lamella insulation boards made of mineral wool on load-bearing substrates (≥ 0.08 N/mm²), we recommend the use of suitable dowels from a building height of 20 m in the rim zone in accordance with the specifications listed here.

Note



< 0.15 kN/dowel 0 – 20 0 0

20 – 100 3 0


aa=spacingbetweentheexteriordowelandtheedgeofthebuilding.Withmasonryatleast10cm,withconcreteatleast5cm.

Insulation board fixing (MW) | 49The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.

Additional dowelling

SubstratesThe Sto-Mineral Fibre Board must be dowelled. Dowels meeting the European Technical Approval must be used for this. The lamella insulation board can be additionally dowelled in the case of load-bearing substrates. In the event of an insufficient load-bearing capacity, the lamella insulation board must also be fixed using dowels that meet the European Technical Approval or national application guidelines.

Anchorage depthThe dowel must be anchored in the solid wall material at the depth required by the relevant dowel approval. Tiles and old render are not classed as suitable anchorage substrates.

Pull-out testIn the case of doubtful substrates, the pull-out strength has to be determined through measurements on the object.

Dowel specificationsThe dowel length depends on the existing wall structure and the insulant thickness. The number of dowels depends on the height and location (surface, edge). Dowelling is usually located beneath the reinforcing coat or the reinforcing mesh. Ensure an even dowelling pattern. Country-specific dowelling patterns must be taken into account.

Full-surface bondingIn the case of smooth substrates, apply bonding mortar to the full surface of the insulation board. Toothing with a toothed trowel (15 x 15 mm). When doing so, do not hold the toothed trowel too flat. Use an emery board for board fixation.

Alternative: In the case of uneven substrates up to 1 cm/m, use spot/edge bonding as described on page 48.

1a


2a

Machine application of bonding mortar to the wallIn the case of smooth substrates, apply an adhesive bead in sinuous lines with a max. spacing of 10 cm to the wall.

1b

After pressure has been applied to the insulation board, it is important to ensure that the board is bonded evenly to the substrate.

2b

Laying of the insulation boardsLay insulation boards from bottom to top, tight-butted in the bond and offset to the building corners. Press the boards firmly onto the wall. Remove any excess adhesive in order to prevent thermal bridges.

3

Bonding the lamella insulation board




01/03.13

W 010System section (vertical section): Dowelling and bonding

wall construction



EN

Rev. no.

cap

adhesive

insulation board




dowel

STO-HQ- -GEN

Additional dowelling of the mineral fibre boardVersion I: Sto-Thermo Dowel, recessed

Additional dowellingMineral fibre board




≤ 0.15 kN/dowel 0-8 8 6

8tohigh-riselevel 14 6

≤ 0.20 kN/dowel Abovehigh-riselevelupto100m

16 10




a

From high-rise level up to 100 m

From 8 m to high-rise level



Insulation board fixing (MW) | 51The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.


Note: Prior to this, the insulation boards must be bonded as described on page 48. Adhere to the specified drying times.


Insert the Sto-Thermo Dowel Cap MW into the dowel plate recess.

Then grind until smooth using the emery board.This results in a closed, level insulation layer that prevents the appearance of dowel markings on the facade.

Insert the thermally decoupled Sto-Thermo Dowel into the insulant by machine. Here the installation tool (Sto-Thermo Dowel MT) determines the uniform drilling depth.

1

2

3

4

Additional dowelling of the mineral fibre boardVersion I: Sto-Thermo Dowel, recessed


Recessed dowelling with the Sto-Thermo Dowel II UEZ is only possible with the Sto-Mineral Fibre Board 040 and the Sto-Mineral Fibre Board 035 Xtra II.

Note

Additional dowelling of the mineral fibre boardVersion II: Sto-Thermo Dowel, recessed

Product tip

Sto-Dowel Head VTThe Sto-Dowel Head VT ensures a uniform, even surface. Furthermore, no additional installation tools are required.

Drill a hole for the dowel in accordance with the dowel approval. Where required, observe edge distances in accordance with the insulant approval.


Plug the Sto-Dowel Head VT onto the Sto-Thermo Dowel. Then insert the dowel into the drill hole until the dowel plate lies on the insulant.

Insert the Sto-Thermo Dowel Cap MW into the dowel plate recess.

Then grind until smooth using the emery board.This results in a closed, level insulation layer that prevents the appearance of dowel markings on the facade.

Screw in the dowel screw until the dowel head is flush with the surface of the insulant.

1

2

3

4




Additional dowelling of the mineral fibre boardVersion III: Sto-Thermo Dowel

01/03.13

W 010-06System section (vertical section): Dowelling and bonding



EN

Rev. no.

wall construction

insulation board


Sto-Dowel Head in accordance withTechnical Data Sheet


adhesive

dowel in accordance with technicalapproval


STO-HQ- -GEN-P



1

With the dowel head attached, insert the dowel 90 mm into the drill hole until the dowel plate is flush with the insulation board.

2

Screw in the dowel screw so that the dowel plate is flush with the surface of the insulant.

3

Finally, insert the EPS plug above the screw so that it lies flush.

4


Due to thermal bridges, we only recommend this dowelling version if version I cannot be used.

Note

Insulation board fixing (MW) | 53Note: These construction planning suggestions are only very general in nature and in no way represent detailed or binding instructions. The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.

Additional dowellingLamella insulation board



Building height:

20 – 100 m

up to 20 m



≤ 0.15 kN/dowel 0-20 8.4 4.2

20-100 16.7 4.2

≤ 0.20 kN/dowel 0-20 8.4 4.2

20-100 12.7 4.2


Note: Prior to this, the insulation boards must be bonded as described on page 48 onwards. Adhere to the specified drying times.

1

With the dowel head attached, insert the dowel 140 mm into the drill hole until the dowel plate is flush with the insulation board.

2

Screw in the dowel screw so that the dowel plate is flush with the surface of the insulant.

3

Finally, insert the EPS plug above the screw so that it lies flush.

4

The building height is divided into two ranges. The required number of dowels depends on the height range and the wall material. More dowels are required in the rim zone than in the surface.

a a=spacingbetweentheexteriordowelandtheedgeofthebuilding.Withmasonryatleast10cm,withconcreteatleast5cm.

54 | Insulation board fixing (MW) The detailed technical specifications and information on the products contained in the Technical Data Sheets and approvals must be observed.


Mechanical fixing with rail system Mechanical fixing with Sto-Rotofix plus

• Mechanical fixing using StoTherm Mineral with Sto-Rotofix plus is described on page 19 onwards.

• In order to use this fixing system, mineral wool insulation boards type HD must be used without groove and tongue (board size: 800 x 625 mm).

• For further information on fixing with Sto-Rotofix plus, we recommend the Sto-Rotofix plus application guideline.

Notes

• Mechanical fixing using StoTherm Mineral with rail system is described on page 17 onwards.

• In order to use this fixing system, the Sto-Mineral Fibre Board 040, M system type, must be used.

Notes

stotherm systems application guideline · 2015-11-20 · stotherm classic® organic external wall...

Documents