closing cavity walls closer brochure 2009.pdf · [email protected] this brochure lists...

CLOSINGCAVITYWALLS

V O L U M E N I N E T E E N

CLOSERS, STOPSAND BARRIERS

CLOSERS + BARRIERS + STOPSVERTICAL + HORIZONTAL + ALL LEVELSDAMP + THERMAL + ACOUSTIC PROTECTION

Cl/SfB (21.9) Xn6 (L34)

telephone

01935 474769

facsimile

01935 428223

[email protected]

webwww.cavitytrays.com

help desk

0800 7311779

address

Yeovil Somerset BA22 8HU

Contact Information

Our conditions of supply apply in all instances. A copy of the company’s terms and conditions is available upon request. Cavity Trays Ltd shallnot be liable for any consequential loss whether this arises from a breach of duty in contract or any other way. Quoted despatch dates andcarriage methods apply to the anticipated date of dispatch and the anticipated mode of carriage only and speed shall not form any part of anycontract. As part of our continuous product development, we reserve the right to amend or change specifications without notice. All advice isinevitably generalised and users should ensure it is relevant to the specific circumstances in which they seek to apply it.

[email protected] brochure lists efficient ways inwhich cavity walls may be closed,Building Regulations, thermal, fireand acoustic requirements, plusthe arrestment and isolation ofpermeating damp, are addressedusing our construction solutions.

The specifier may select from a widerange of options. Some closersaddress the same constructiondetail, but with a differentemphasis. The choice may berefined pending the desiredthermal, fire integrity or acousticlevel sought. Choice also extendswith the provision for expansion

and contraction between timberand masonry skins.

Three new products, seventeenproduct enhancements andnumerous specification revisionsfeature within this new publication.If you cannot see what you are afteror have a bespoke requirement,please contact us.

To contact us, use the e-mailaddress or any of the other optionslisted. We look forward to being ofservice to you and supplying costeffective best practice solutions toprotect your projects.

Introducing...Cavity Wall Closers

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EN

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phone 01935 474769 email [email protected] visit www.cavitytrays.com

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Bespoke Traditional Closing Service 03

Type D Damp Course 04

Type DIP 05

Type FWC Five Width Cavicloser 06

Type H Cavicloser 07

Type O Cavicloser 08

Quickcloser 09

Sash Frame Insulated DPC 10

Type V Cavicloser 11

Type WCA 12

Cavi120 Type V Closer 13

Cavi90 Type H Closer 14

Cavi60 Type WCA 15

Cavi60 Type V170 16

Cavi240 Type PWIB 17

Application Example 18

Cavi60 Type SAF Stop 19

Cavi120 Combined Fire and Acoustic Stop 20

Cavi240 Type CFIS 21

Cavi60 Type MWR200 22

Type GBFICS 23

Type GBPWIS 24

Optimised Thermal + Acoustic + Fire Integrity 25

Contents

Con

tent

sBespoke versions available

Cavity width range accommodated

Variable bed and height dimensions

Number of minutes fire integrity

Acoustic suppression qualities

Legend

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Bespoke Traditional Closing Service

Bespoke Traditional Closing ServiceExposure rating / frame relationship Up to very severe pending detailCavity - standard sizes accommodated All sizes + solid walls pending detailSpecial cavity widths accommodated Yes pending detailStraight reveals Yes pending detailChecked + typical sash frame reveals Yes pending detailProduct lengths 2.4mActs as vertical dpc YesActs as insulator Provided where design permitsPermits different frame positions N/AFrames fitted as work proceeds or later Yes – usually both options pending designTimber frame / traditional construction Usually unaffected by inner skin typeMasonry skin styles Subject to sight of detailUndulating masonry face finishes Seek advice providing details of materialAcoustic insulator No – but available as option in some instancesFire rated No Vertical and horizontal applications Yes pending detailCompatible with other cavity wall elements To be determined upon assessmentSecuring ties supplied N/APack sizes Individual lengthsWeight per pack Varies pending style of profile selected.Material Pethylene + Inskorfoam or rock wool insulatorColour BlackManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulation Normally 0.029W/mK to 0.033W/mKPossible composite thermal resistance path Depends on designCFC free Yes + zero ODP using standard materialsCAD drawing downloads available Bespoke available subject to order

Construction AdvantageAssured consistent detail of build. Fixed cost. Opportunityto enhance specification.

SpecifyBespoke Traditional Closing DPC’s by Cavity Trays ofYeovil Somerset BA22 8HU. Profiles to be determined byBespoke Traditional Closing Service and schedule issuedby Cavity Trays Ltd.

References• Building Regulations Document C L1 & L2• British Standard 5628-3• BRE Thermal Insulation Avoiding Risks• Cavity Trays Ltd main manual• Website: cavitytraystandards.co.uk• Robust Details• Scottish Tech Standards Part D• Building Regulations Scotland – proposals for consultation June 2008• BS EN ISO 10211: Thermal bridges in building construction

IntroductionWhere construction or reconstruction of aproperty is required to replicate a traditionalstyle, the opportunity exists to eliminateshortcomings or areas in which the dampproofing and thermal qualities are not ideal.It is usually possible to introduce measuresthat do not affect the aesthetics of thestructure but do raise the performance andimprove the behaviour of the wall.

Openings in new and existing buildings canbe assessed and preformed closing DPC’smoulded to aid consistent and accurateconstruction. At the same time thermalbenefits can be introduced where possible.

Both architect and contractor are able tomake use of preformed solutions thatcreate the desired detail, thus eliminatingproblems commonly associated withinstaller error and misplacement.

To take advantage of the BespokeTraditional Closing Service, pleasecontact your Area Manager or theHelpdesk at our Yeovil office. (See insidefront cover for contact numbers).

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Type D Damp Proof Course• Vertical damp-proof course• Vertical insulator• Robust and self-supporting - cannot sag• Eliminates danger of mortar bridging• Conventional build or attach to frame

IntroductionIf the masonry forming the cavity wallreveal is to be returned in the traditionalmanner, the preformed Type D can bedeployed to provide the requisite dpcprotection and thermal break now soughtto satisfy regulation requirements. Beingready-shaped and available in almost anyprofile, the Type D introduces consistencyof the intended construction detail. Thusdistortion or misplacement associatedwith conventional dpc is eliminated.

References• Investigating Rainwater Penetration of

Modern Buildings (Masonry 129)• Building Regulations Part L• British Standard 5628-3• BRE Thermal Insulation Avoiding Risks• Website: cavitytraystandards.co.uk• Robust Details• Scottish Tech Standards Part D

Type D Cavicloser Vertical DPC & Insulator Accommodates traditional reveal closingExposure rating Severe / Very severe pending profile Cavity - standard sizes accommodated Profiles available to suit all cavity dimensionsSpecial cavity widths accommodated Yes – all dimensions variableStraight reveals Yes - build in profile as suppliedChecked reveals Yes - see illustrated version / styleProduct lengths 2.44m.Acts as vertical dpc YesActs as insulator YesPermits different frame positions YesFrames fitted as work proceeds or later Build in when wall is raisedTimber frame / traditional construction Both styles accommodatedMasonry skin styles All popular flat faced masonryUndulating masonry face finishes Seek advice providing details of materialAcoustic insulator NAFire rated No (see Cavi prefixed range for fire rated)Vertical and horizontal applications Vertical. Horizontal versions to orderCompatible with other cavity wall elements No known restrictionsSecuring ties supplied NAPack sizes x 10 lengthsWeight per pack Dependent on profile. Average pack 8kgMaterial Polypropylene dpc + polystyrene inskorfoamColour Black with white insulatorManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulations 0.033W/mK / 0.038W/mKPossible composite thermal resistance path 0.89 m² K/W (25mm) 1.55 m² K/W (50mm)CFC free Yes+ zero ODPCAD drawing downloads available Yes

Checked Reveal Standard Reveal

If required the insulation can beset back so the dpc interfaceswith the frame (as shown)

Can be supplied in twoinsulation thicknesses – 25mmor 50mm, to maximise thermaltarget

Construction AdvantageRigid profile Type D damp course does not sag or distortlike roll dpc. This benefits positive positioning and aconsistent build detail.

SpecifyType D by Cavity Trays of Yeovil Somerset BA22 8HU to close cavity wall reveal. State profile / dimensions to permitcompatible matched dimension Type D to be supplied.

COMPUTER REFERENCE CODES:D (WITH 25MM INSULATION)D2 (WITH 50MM INSULATION)

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Type DIP Type D Interfacing Profile• Vertical dpc• Thermal break• Interfaces with cavity insulation• Eliminates thermal spiking• Rigid profile ensures consistency of build

IntroductionThe Type DIP (Type D in Interfacing Profile)is used where the mason is returning blockwork at the reveal in the traditional manner,and slab insulation is present within thecavity. The Type DIP is manufactured ofsolid dpc to which is bonded insulation. The dpc profile extends sufficiently into thecavity to permit this insulation to overlay thecavity slab insulation and maximise thethermal arrangement whenever inner andouter skins meet. Different profiles areavailable for both straight and checkedapplications to suit structural requirements.


Modern Buildings (Masonry 129)• Building Regulations Part L• British Standard 5628-3• BRE Thermal Insulation Avoiding Risks• Website: cavitytraystandards.co.uk• Robust Details• Scottish Tech Standards Part D• BS EN ISO 6946:1997

Type DIP DPC & Interfacing Insulator Accommodates traditional reveal closingExposure rating Severe / Very severe pending profile Cavity - standard sizes accommodated Profiles available to suit all cavity dimensionsSpecial cavity widths accommodated Yes – all dimensions variableStraight reveals Yes - build in profile as suppliedChecked reveals Yes - see illustrated version / styleProduct lengths 2.44m.Acts as vertical dpc YesActs as insulator YesPermits different frame positions YesFrames fitted as work proceeds or later Build in when wall is raisedTimber frame / traditional construction Both styles accommodatedMasonry skin styles All popular flat faced masonryUndulating masonry face finishes Seek advice providing details of materialAcoustic insulator Acoustic insulation option availableFire rated No (see Cavi prefixed range for fire rated)Vertical and horizontal applications Vertical. Horizontal versions to orderCompatible with other cavity wall elements No known restrictionsSecuring ties supplied NAPack sizes X 10 lengthsWeight per pack Dependent on profile. Average pack 8kgMaterial Polypropylene dpc + polystyrene BS 3836-1986Colour Black with tinted white insulatorManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulations 0.033W/mK / 0.038W/mKPossible composite thermal resistance path 0.89 m² K/W (25mm) 1.55 m² K/W (50mm) CFC free Yes+ zero ODPCAD drawing downloads available Yes

25mm Insulation 50mm Insulation

Note how DIP insulationoverlays cavity insulation

The 50mm option enhancesthe thermal arrangement

Construction AdvantageType DIP permits traditional closing and importantlyinterfaces with the cavity sheet insulation. This avoidsvertical breaks (spiking) that can manifest if the cavity sheetinsulation is not accurately and consistently cut up to thereveal. The Type DIP promotes cost effective traditionalclosing with enhanced thermal status.

SpecifyType DIP by Cavity Trays of Yeovil Somerset BA22 8HU toclose cavity wall reveal. State profile / dimensions to permitcompatible matched dimension Type DIP to be supplied.

COMPUTER REFERENCE CODES:DIP (WITH 25MM INSULATION)DIP2 (WITH 50MM INSULATION)

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06• Acts as a dpc• Insulates the reveal• One model provides five size options• Straight reveal applications

IntroductionThe Type FWC offers the installer flexibility,as grooves in the insulating core denotewhere the core can be trimmed back tocreate a cavity closer to suit five differentcavity widths. Thus this one modeladdresses the widths of cavity currentlypopular.

References• Building Regulations Part L• British Standard 5628-3• BRE Thermal Insulation Avoiding Risks• Website: cavitytraystandards.co.uk• Robust Details• Scottish Tech Standards Part D

Type FWC Five Width Cavicloser General purpose cavity closerExposure rating Severe 30+mm setback. Very severe when checkedCavity - standard sizes accommodated Suits 50mm, 65mm, 75mm, 75mm, 85mm &100mmSpecial cavity widths accommodated Above five dimensions - trim to choiceStraight reveals Yes - build in profile as suppliedChecked reveals NoProduct lengths 2.4mActs as vertical dpc YesActs as insulator YesPermits different frame positions YesFrames fitted as work proceeds or later Second fix Timber frame / traditional construction Both styles accommodatedMasonry skin styles All popular flat faced masonryAcoustic qualities NAFire rated No (see Cavi prefixed range for fire rated)Vertical and horizontal applications Yes –see examplesCompatible with other cavity wall elements No known restrictionsSecuring ties supplied No – friction fitting + nail fix to block workPack sizes x 10 lengthsWeight per pack 9 kgMaterial PVCU + orange polystyrene foamColour White with orange insulationManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulation 0.029W/mKPossible composite thermal resistance path 0.98 m² K/W common applications 30mm sbCFC free Yes - zero ODPCAD drawing downloads available Yes

Cill Detail Standard Reveal

Typical application of the TypeFWC used at cill level

The Type FWC is introducedinto the cavity after the revealmasonry is raised

Construction AdvantageInstaller needs only one model to close most popularcavity widths.

SpecifyType FWC Five Width Cavicloser by Cavity Trays of YeovilSomerset BA22 8HU to close cavity wall reveal. Trim alonggrooves to suit intended cavity size.

Type FWC Five Width Cavicloser

COMPUTER REFERENCE CODES:FWC2.4

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Type H Cavicloser• Closes cavity and accommodates a range of cavity widths• Acts as a DPC• Insulates and introduces a thermal zone• Permits choice of frame position• Frame fixing when work proceeds or at later date• Integral fins

Checked Reveal Cill Detail Standard Reveal

IntroductionThe Type H is a two part closer. A separatefaceplate is attachable to whichever side of the closer body is selected to suit thecavity width and window position.Accompanying wall ties anchor into themoulded dovetails to permit easybonding as the masonry is raised. Anti capillary features provide a checkagainst wind-driven rain.

References• Building Regulations Document C L1 & L2

• British Standard 5628-3

• BRE Thermal Insulation Avoiding Risks

• Cavity Trays Ltd main manual

• Website: cavitytraystandards.co.uk

• Robust Details

• Scottish Tech Standards Part D

Type H Cavicloser H1 and H2 versions Reveal closer with attachable faceplateExposure rating / frame relationship Severe 30mm+ setback. Very severe when checkedCavity - standard sizes accommodated H1 suits 50mm, & 75mm, H2 suits 70mm &100mmSpecial cavity widths accommodated No - see alternative modelsStraight reveals Yes - build in profile as suppliedChecked reveals Yes - build in as illustratedProduct lengths 2.1m, 3.0m. 3.6m lengths to special order.Acts as vertical dpc YesActs as insulator YesPermits different frame positions YesFrames fitted as work proceeds or later Yes - first or second fix optionsTimber frame / traditional construction Both styles accommodatedMasonry skin styles All popular flat faced masonry Undulating masonry face finishes Seek advice providing details of materialAcoustic insulator NAFire rated No (see Cavi prefixed range for fire rated)Vertical and horizontal applications Yes –see examplesCompatible with other cavity wall elements No known restrictionsSecuring ties supplied YesPack sizes H1 x 10 lengths per pack. H2 x 6 lengths per packWeight per pack including faceplates H1 x 2.1= 24kg 3m = 34kg. 3.6m = 41kg.

H2 x 2.1= 24.kg 3m = 35kg. 3.6m = 42kg.Material PVCU + polystyrene inskorfoamColour WhiteManufacturing standard BS EN ISO 9001:2000Building Regulations Yes requirements can be satisfiedNHBC / Zurich / Premier requirements Yes permits requirements to be satisfied‘k’ value of insulation sample 0.030W/mKPossible composite thermal resistance path 1.90 m² K/W (75mm cavity)CFC free Yes+ zero ODPCAD drawing downloads available Yes

Extent of check is unrestricted.Ties offset to accommodatesplay / cant masonry finishes

Typical cill application. Splayedcill masonry option usuallyunrestricted as ties offset

Economical reveal constructionachieved by spanning the frameacross the cavity

Head Detail

Typical lintel style permittingclosing at the head

Construction AdvantageFaceplate location in relation to reveal can be varied,benefiting situations where frame is deeply set.

SpecifyType H1 or H2 (stipulate) by Cavity Trays of Yeovil SomersetBA22 8HU to close cavity wall reveal. Cavity size: (state width).

COMPUTER REFERENCE CODES:H X 2.1M H 2 X 2.1M (H2 LARGER PROFILE)H X 3.0M H 2 X 3.0M (H2 LARGER PROFILE)H X 3.6M H 2 X 3.6M (H2 LARGER PROFILE)

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Type O Refurbishment cavity closer DPC for existing unclosed cavity walls

Checked Reveal Standard Reveal

IntroductionThe Type O fills the gap exposed when awindow or door frame is removed from acavity wall that has not been ‘closed’ Thecompressible O section holds the mouldingin shape and the two projecting wingsproject against the face of both skins. The integral insulation promotes thermalenhancement of the existing opening andvertical dpc integrity is established. Wingscan be trimmed back to suit afterintroduction of new frame. The Type Omay be flexed to suit checked reveals.

References• Accessing the affects of thermal bridging at

junctions and around openings

• (T I Ward) BRE Press 2006

• Building Regulations Part L




Type O Vertical Remedial Insulated DPC Upgrading closer when replacing windowsExposure rating Severe 30+mm setback. Very severe when checkedCavity - standard sizes accommodated O1 fits 20mm- 60mm. O2 fits 60mm -100mm cavitiesSpecial cavity widths accommodated Compressible within above rangesStraight reveals Yes - wings equalise to suit aligned reveal masonryChecked reveals Yes - wings offset to suit checked reveal masonryProduct lengths Std 885mm lengths lap and lockActs as vertical dpc YesActs as insulator YesPermits different frame positions YesFrames fitted as work proceeds or later Install when replacing windows & cavity exposedTimber frame / traditional construction Both styles accommodatedMasonry skin styles All popular flat faced masonry Undulating masonry face finishes Seek advice providing details of materialAcoustic insulator Some reduction of cavity acoustic transmissionFire rated No (see Cavi prefixed range offering fire rated)Vertical and horizontal applications Yes –see examplesCompatible with other cavity wall elements No identified restrictions Securing ties supplied NA - secure wings and trim after installationPack sizes x 10 lengths (also available individually)Weight per pack 4kgMaterial Polypropylene dpc, siliconised wool insulationColour BlackManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulation 0.035W/mK (varies when compressed)Possible composite thermal resistance path 1.25m² K/W (in 50mm cavity)CFC free YesCAD drawing downloads available Yes

Type O profile can be flexed toaccommodate offset / checkedmasonry

When the new frame isintroduced it spans the cavityand covers the Type O

• Combined DPC and insulator• Accommodates numerous cavity sizes and variances• Suitable for checked or straight reveals• Instantly upgrades structures when replacing frames• Standard with many window and door replacement companies• Anti capillary mouldings

SpecifyType O1 or O2 Vertical Damp Proof Course (stipulate) byCavity Trays of Yeovil Somerset BA22 8HU. Introduce intoexisting exposed cavities Cavity size: (state width).

Construction AdvantageThe requirement to thermally improve existing housing stockwas to have featured within the new Building Regulations.The requirement was omitted, so technically there is nocurrent obligation to thermally improve or acousticallyimprove openings when existing frames are removed andreplacements fitted. Thus this product is an optionalconsideration available to specifiers with the opportunity toraise standards of existing housing stock.

COMPUTER REFERENCE CODES:O 900 INS (STD SIZE)O2 900 INS (LARGE SIZE)

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Quickcloser Vertical closer with flexibleinsulating core• Closes the reveal• Insulates cavities from 40mm to 100mm wide• Acts as a DPC• New and existing structure applications• Integral Fins

IntroductionThe Quickcloser has a flexible insulatingcore within a polythene sleeve. This can beshaped to size to suit the cavity widthsought by the installer as the wall is raised.Accompanying wall ties secure the Type Oto the masonry skins. This product can alsobe successfully introduced into existingcavities in new and existing applications.

References• Building Regulations Part L• British Standard 5628-3• BRE Thermal Insulation Avoiding Risks• Website: cavitytraystandards.co.uk• Robust Details• Scottish Tech Standards Part D

Quickcloser Adjustable insulator closerExposure rating Severe. Cavity - standard sizes accommodated Insulation shapes from 40mm up to 100mm maxSpecial/unusual cavity widths accommodated Yes – within above rangeStraight reveals Yes - build in profile as suppliedChecked reveals Yes - Turn section 90º & build in as illustratedProduct lengths 2.1m and 2.4mActs as vertical dpc YesActs as insulator YesPermits different frame positions YesFrames fitted as work proceeds or later Yes - first or second fix options possibleTimber frame / traditional construction Can suit both stylesMasonry skin styles All popular flat faced masonryAcoustic insulator Yes - reduction by sleeved insulationFire rated No (see Cavi prefixed range for fire rated)Vertical and horizontal applications Yes – see examplesCompatible with other cavity wall elements Retro cavity fill could alter insulation sleeve shapeSecuring ties supplied YesPack sizes x 10 lengthsWeight per pack 2.1m x 10 = 13.5kg. 2.4 x 10 = 15 kgMaterial PVCU + siliconised rock wool insulatorColour White + green encapsulation sleeveManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich /Premier requirements Yes requirements can be satisfied‘k’ value of insulation 0.035W/mK (varies when compressed)Possible composite thermal resistance path 1.50 m² K/W CFC free YesCAD drawing downloads available Yes


In a checked application themasonry offsetting is notrestricted

Typical cill application In a straight reveal the frameposition is not restricted withincompliant parameters

Construction AdvantageThe installer creates the shape of the closing insulation,which can be helpful if the cavity masonry faces areundulating.

SpecifyQuickcloser by Cavity Trays of Yeovil Somerset BA22 8HUto close cavity wall reveals where cavities are between40mm to 100mm range.

COMPUTER REFERENCE CODES:QUICK 2.1QUICK 2.4

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Sash Frame Insulated DPC• Acts as a DPC• Thermally insulates• Assured preformed detail• Permits upgrading of opening

Sash Frame Insulated DPC New and existing applicationsExposure rating / frame relationship Very severe Cavity - standard sizes accommodated All popular sizesSpecial cavity widths accommodated Yes bespoke closer service offeredStraight reveals N/AChecked + typical sash frame reveals Yes - build in profile as suppliedProduct lengths 2.4mActs as vertical dpc YesActs as insulator YesPermits different frame positions N/AFrames fitted as work proceeds or later Yes - first and second fix options pending designTimber frame / traditional construction Not affected by inner skin typeMasonry skin styles All popular flat faced masonryUndulating masonry face finishes Seek advice providing details of materialAcoustic insulator No – but available as optionFire rated No (see Cavi prefixed range for fire rated)Vertical and horizontal applications Yes –see examplesCompatible with other cavity wall elements No identified restrictionsSecuring ties supplied Not required – secure to framePack sizes Individual lengthsWeight per pack Varies pending style of profile selected.Material Pethylene + Inskorfoam or rock wool insulatorColour BlackManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulation 0.033W/mK / 0.038W/mKPossible composite thermal resistance path Varies pending frame/design optionCFC free Yes + zero ODPCAD drawing downloads available Bespoke downloads offered

Construction AdvantageIn new work applications an enhanced level of dpc andinsulation can be introduced. In existing work advantagecan be taken when introducing new frames to provide alevel of upgrading that was not previously available.

SpecifySash Frame Insulated DPC by Cavity Trays of YeovilSomerset BA22 8HU to interface with Sash frame and closecavity wall reveal. Sash Frame Insulated DPC profile asagreed drawing to suit ____mm cavity. (enter appropriatecavity width dimensions).

Cavity Reveal Solid Wall

The insulated dpc’s prevent coldbridging to the two sides of theframe that can otherwise act asthermal conduits

Often the opportunity exists tothermally enhance solid wallapplications

COMPUTER REFERENCE CODES:SFC BESPOKE

IntroductionSpecifically manufactured for use with sashwindow frames. DPC integrity is introducedalong the line of the masonry check andcavity, promoting thermal enhancement ofthe reveal. Sash Frame DPC’s are availablefor both traditional counterweight box styleand balance style frames. The specifier isable to select the extent of thermalenhancement to suit the frame andstructural opening dimensions. In the caseof balanced sash frames replacingcounterweight sash frame, the opportunityalso exists to fully insulate the resultant void.Modified versions are also available foruse in solid wall construction whereenvelopment of the frame is desired.

References• Building Regulations Document C L1 & L2.



• Cavity Trays Ltd main manual


• Robust Details


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Type V Contract Closer• Closes cavity and acts as a DPC• Insulates the reveal• Range of cavity widths offered• Eliminates need to cut and return masonry• Cost-effective standardised detail• Anti capillary fins


IntroductionThe Type V Closer provides aneconomical way of closing the cavity wallreveal. It is a one-part model consisting ofa ribbed face that spans the cavity andoverlays the inner and outer skins ofmasonry. Secured behind this face is aclosed cell insulating core, that projectsinto the cavity. Slots accommodate ties tosecure the closer. Integral anti-capillarymouldings. Frames can be fitted in anycompliant position within the reveal depth.

References• Building Regulations Document C L1 & L2.

• British Standard 5628-3.

• BRE Thermal Insulation Avoiding Risks.

• Cavity Trays Ltd main manual.


• Robust Details


• Building Regulations Scotland – proposalsfor consultation June 2008.

• BS EN ISO 10211: Thermal bridges inbuilding construction

Construction AdvantageChecked reveals instantly accommodated by turning thehinged section of the closer. The resulting profile alsointroduces an isolation stop between the damp masonryand the section of the frame in check.

SpecifyType V by Cavity Trays of Yeovil Somerset BA22 8HU toclose cavity wall reveal. Type V ____ to suit ____mm cavity.(enter appropriate cavity width dimensions).

Type V Cavicloser Contract closer - popular on housing schemesExposure rating / frame relationship Severe 30+mm setback. Very severe when checkedCavity - standard sizes accommodated 50mm, 65mm, 75mm, 100mmSpecial cavity widths accommodated Yes bespoke closer service offeredStraight reveals Yes - build in profile as suppliedChecked reveals Yes - turn hinged section 90º prior to useProduct lengths 2.1m, 3.0mActs as vertical dpc YesActs as insulator YesPermits different frame positions YesFrames fitted as work proceeds or later Yes - first or second fix optionsTimber frame / traditional construction Both styles accommodatedMasonry skin styles All popular flat faced masonryUndulating masonry face finishes Seek advice providing details of materialAcoustic insulator NAFire rated No (see Cavi prefixed range for fire rated)Vertical and horizontal applications Yes –see examplesCompatible with other cavity wall elements No identified restrictionsSecuring ties supplied Yes included within packPack sizes x 10 lengthsWeight per pack 10kg per 2.1m pack, 14.5kg per 3.0m packMaterial PVCU + polystyrene inskorfoamColour WhiteManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulations used 0.033W/mK / 0.038W/mKPossible composite thermal resistance path 2.20 m² K/W (in 75mm cavity)CFC free Yes + zero ODPCAD drawing downloads available Yes

Checked reveals accommodatedusing standard Type V (see Construction Advantage)

Thermal zoning can be introducedat cill level in usual applications

The position of the frame isunrestricted within compliantparameters

COMPUTER REFERENCE CODES:V 50 X 3.0M V 75 X 3.0MV 65 X 3.0M V 100 X 3.0M

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Type WCA Closer for wide cavity installations

• Closes cavities up to 200mm wide• Function as vertical DPC• Insulates reveal• Permits choice of frame positions• Micro fins

IntroductionWCA stands for wide cavity applications.The large insulating core promotesexcellent thermal qualities. The WCA isavailable to suit cavities up to 200mm wideand is secured in position usingaccompanying ties. The side of the closernearest the inner leaf has a friction fitrelationship with the rest of the closer body.Thus in timber frame construction the closercan be screwed or nailed to the inner leaf,and the arrangement can benefitexpansion and contraction provision.


Modern Buildings (Masonry 129)

• Building Regulations Part L




• Robust Details


Type WCA Cavicloser Wide cavity applications, acoustic closerExposure rating Severe 30+mm setback. Very severe when checkedCavity - standard sizes accommodated From 100mm up to 200mmSpecial cavity widths accommodated Yes - bespoke closer service offeredStraight reveals Yes - build in profile as suppliedChecked reveals Yes - build in as checked illustrationProduct lengths 2.1m, 3.0mActs as vertical dpc YesActs as insulator YesPermits different frame positions YesFrames fitted as work proceeds or later Yes - first or second fix optionsTimber frame* / traditional construction Both styles *integral movement linkMasonry skin styles All popular flat faced masonry Undulating masonry face finishes Seek advice providing details of materialAcoustic insulator Yes reduces sound flanking transmissionFire rated No (see Cavi prefixed WCA for fire rated)Vertical and horizontal applications Yes –see examplesCompatible with other cavity wall elements No identified restrictionsSecuring ties supplied YesPack sizes x 6 lengthsWeight per pack 2.1m x 6 =14.5kg. 3.0m x 6 = 21kg.Material PVCU + polystyrene inskorfoamColour WhiteManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulations used 0.033W/mK / 0.038W/mK Possible composite thermal resistance path 2.20 m² K/W (in 200mm cavity)CFC free Yes + zero ODPCAD drawing downloads available Yes


Turn hinged section 90° and theturned portion acts as an isolatingbarrier betw een the damp masonryand the checked portion of the frame

When used at cill level the closerdoes not restrict frame positionsor window board combinations

Typical wide cavity straightapplication. See ConstructionAdvantage

Head Detail

Where lintel styles permit theType WCA can be incorporatedacross the reveal opening

Construction AdvantageIn timber frame applications direct screw fixing to theinner leaf is possible as closer has an integral friction linkmoulding offering some vertical differential movementprovision. See also checked reveal hinge advantage.

SpecifyType WCA Cavicloser by Cavity Trays of Yeovil SomersetBA22 8HU to close cavity wall reveal. State actual cavity width.

COMPUTER REFERENCE CODES:TYPE WCA 2.1M (STATE ALSO CAVITY WIDTH)TYPE WCA 3.0M (STATE ALSO CAVITY WIDTH)

Cavi120 Type V Cavicloser• 120 minutes fire integrity rating• Suitable in cavities from 50mm to 100mm wide• Acts as a DPC• Closes and insulates reveals• Anti capillary fins


IntroductionThe Cavi 120 Type V has a two-hour firerating, a sound reducing insulator and isavailable for cavity sizes up to 100mm.This closer may be used in straightreveals but is also suitable for use withchecked reveals. Always state clearlywhich option is required. The checkedreveal version does not have a frontprojecting lip, and terminates against theinside (cavity) face of the outer skin.

References• BS 476 (fire resistance testing)

• Part E details – resistance to the passage of sound

• Building Regulations Document C L1 & L2


• Robust Details



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Cavi 120 Type V Cavicloser Fire rated acoustic closerExposure rating Severe 30+mm setback. Very severe when checkedCavity - standard sizes accommodated 50mm, 65mm, 75mm, 85mm, 100mmSpecial cavity widths accommodated Yes bespoke closer service offeredStraight reveals Yes - build in profile as suppliedChecked reveals Yes - request special versionProduct lengths 2.1m, 3.0mActs as vertical dpc YesActs as insulator YesPermits different frame positions YesFrames fitted as work proceeds or later Yes - first or second fix optionsTimber frame / traditional construction Both styles accommodatedMasonry skin styles All popular flat faced masonry Undulating masonry face finishes Seek advice providing details of materialAcoustic insulator Yes – acoustic transmission reductionFire rated Yes Prefix denotes 120mins (2hrs) integrity ratingVertical and horizontal applications Yes –see examplesCompatible with other cavity wall elements No known restrictionsSecuring ties supplied YesPack sizes Packs of 5 or 10 closers, pending length.Weight per pack 2.1m x 10 = 19.5kg. 3m x5 = 14kg.Material PVCU + rock fibre insulator + stainless tiesColour White extrusionManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulation used 0.035W/mKPossible composite thermal resistance path 2.37 m² K/W (in 75mm cavity)CFC free Yes + zero ODPCAD drawing downloads available Yes

Turn hinged section 90° and theturned portion acts as an isolatingbarrier between the damp masonryand checked portion of frame

Typical horizontal applicationat cill level

The Cavi 120 prefix denotestwo hours fire rating when usedin compliant applications suchas a straight reveal

Head Detail Reveal

With some lintel arrangementsit is possible to incorporate theCavi 120 Type V at head level

Cav

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30 m

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es

fire

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grity

Construction AdvantageStraight and cranked reveals accommodated. Theextent the masonry is offset is not limited. Inclusive ofstainless steel ties to secure to both skins. Bespokeoptions available.

SpecifyCavi 120 Type V fire rated + acoustic cavicloser by CavityTrays of Yeovil Somerset BA22 8HU to close cavity wallreveal. Cavi 120 Type V to suit _____mm cavity. (enterappropriate cavity width dimensions). State straight orchecked reveal.

COMPUTER REFERENCE CODES:CAVI 120 V 2.1 50 CAVI 120V 3.0 50CAVI 120 V 2.1 75 CAVI 120 V 3.0 75CAVI 120 V 2.1 100 CAVI 120 V 3.0 100

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Cavi90Type H Cavicloser• 90 minutes fire integrity rating• Closes and insulates reveals• Suitable in cavities of 50mm and 75mm wide• Acts as a DPC• Integral fins

IntroductionThis fire-rated version of the Type H closeroffers a Cavi 90 (1½ hr) fire rating and issuitable for use in cavities of 50mm or75mm. The detachable faceplate can besecured to either of the four faces of theinsulating core so that it is positionedpredominately forward or predominatelyback to suit the aesthetics and specificframe location sought.

References• Building Regulations Document C L1 & L2• Scottish Tech Standards Part D• Robust Details• British Standard 5628-3• BRE Thermal Insulation Avoiding Risks

Cavi 90 Type H Cavicloser Fire rated version of H1 and H2 closerExposure rating Severe 30+mm setback. Very severe when checkedCavity - standard sizes accommodated 50mm, & 75mmSpecial cavity widths accommodated No - see alternative modelsStraight reveals Yes - build in profile as suppliedChecked reveals Yes - build in as illustratedProduct lengths 2.1m. 3.0m.Acts as vertical dpc YesActs as insulator YesPermits different frame positions YesFrames fitted as work proceeds or later Yes - first or second fix optionsTimber frame / traditional construction Both styles accommodatedMasonry skin styles All popular flat faced masonryUndulating masonry face finishes Seek advice providing details of materialAcoustic insulator Minimal reductionFire rated Yes Prefix denotes 90mins (1½ hrs) integrity ratingVertical and horizontal applications Yes –see examplesCompatible with other cavity wall elements No known restrictionsSecuring ties supplied YesWarranty YesPack sizes Packs of 5 or 10 closers, pending lengthWeight per pack 2.1m x 10 = 25kg. 3m x 5 = 18kgs.Material PVCU + rock fibre insulator + stainless tiesColour White extrusion Manufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulation used 0.035W/mKPossible composite thermal resistance path 2.20 m² K/W (in 75mm cavity)CFC free Yes+ zero ODPCAD drawing downloads available Yes


In a checked application themasonry offsetting is not restricted

Typical cill application possible.Must interface with vertical closers

Frame position not restrictedwithin compliant parameters

Construction AdvantageAlign ties with any course height selected, locking intomoulded channels that then provide conduits into whichmortar can infill to maximise solidity of envelopment.

SpecifyCavi 90 Type H1 or Cavi 90 Type H2 (stipulate) fire ratedcavicloser by Cavity Trays of Yeovil Somerset BA22 8HUto close cavity wall reveal to suit _____mm cavity. (enteractual cavity width dimensions).

COMPUTER REFERENCE CODES:CAVI 90 H1 2.1CAVI 90 H1 3.0CAVI 90 H1 3.6

Cavi60Type WCA Cavicloser• 60 minutes fire integrity rated stops• Acts as a DPC• Accompanying stainless steel anchoring ties• For cavity widths up to 150mm• Micro fins


IntroductionWith a one hour fire rating and amaximum cavity width accommodated of150mm, the Cavi 60 Type WCA providesa robust method of closing and protectingwider reveals The large sound-absorbinginsulation core is secured behind theheavy duty ribbed face which permits anunrestricted choice of frame positionswithin thermally efficient parameters.





• Robust Details



• BS EN ISO 10211: Thermal bridges inbuilding construction

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Cavi 60 Type WCA Cavicloser Fire rated closer for wide cavity applications Exposure rating 30+mm setback. Severe Very severe when checkedCavity - standard sizes accommodated From 100mm up to 150mmSpecial cavity widths accommodated Yes bespoke closer service offeredStraight reveals Yes - build in profile as suppliedChecked reveals Yes - build in a checked illustrationProduct lengths 2.1m, 3.0mActs as vertical dpc YesActs as insulator YesPermits different frame positions YesFrames fitted as work proceeds or later Yes - first or second fix optionsTimber frame* / traditional construction Both styles accommodated *integral movement linkMasonry skin styles All popular flat faced masonryUndulating masonry face finishes Seek advice providing details of materialAcoustic insulator Yes – insulation promotes reductionFire rated Yes Prefix denotes 60 mins (1 hr) fire ratingVertical and horizontal applications Yes –see examplesCompatible with other cavity wall elements No known restrictionsSecuring ties supplied YesWarranty YesPack sizes x 6 lengthsWeight per pack 2.1m x 6 = 20kg. 3m x 6 = 28.5kg.Material PVCU + rock wool insulator + stainless tiesColour WhiteManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulation used 0.035W/mKPossible composite thermal resistance path 2.37 m² K/W (in 100mm cavity)CFC free Yes + zero ODPCAD drawing downloads available Yes

Turn hinged section 90° and theturned portion acts as an isolatingbarrier between the damp masonryand the checked portion of the frame

When used at cill level thecloser must interface withvertical closers to maintain fireintegrity

Typical wide cavity straightapplication. See ConstructionAdvantage

Head Detail

Where lintel styles permit theType WCA can be incorporatedacross the reveal opening andinterface with vertical closers

Construction AdvantageIn timber frame applications direct screw fixing to theinner leaf is possible as closer has an integral friction linkmoulding offering some vertical differential movementprovision. See also checked reveal hinge advantage.

SpecifyCavi 60 Type WCA Cavicloser by Cavity Trays of YeovilSomerset BA22 8HU to close cavity wall reveal and provideone hour fire integrity rating. State actual cavity width.

COMPUTER REFERENCE CODES:CAVI 60 WCA 2.1 100 CAVI 60 WCA 3.0 100CAVI 60 WCA 2.1 150 CAVI 60 WCA 3.0 100

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Cavi60Type V170 Cavicloser• One hour fire rating• Cavity range 100mm to 170mm• Acts as a dpc• Closes and insulates reveal• Acoustic reduction insulator

IntroductionCavities up to 170mm maximum can beeconomically closed with the Cavi 60MWR V 170 which has an acousticreducing insulator facing into the cavityand an accompanying fire integrityrating of one hour. This one piececontract closer is designated MWR –Maximum Width Range.

References• BS 476 (fire resistance testing)• Part E details – resistance to the passage

of sound• Building Regulations Document C L1 & L2• Scottish Tech Standards Part D• Robust Details• British Standard 5628-3• BRE Thermal Insulation Avoiding Risks• BS EN ISO 6946:1997

Cavi 60 MWR Type V170 Cavicloser Fire rated closer within maximum width rangeExposure rating 30+mm setback. Severe Very severe when checkedCavity - standard sizes accommodated From 100mm up to 170mmSpecial cavity widths accommodated Yes - bespoke closer service state cavity widthStraight reveals Yes - build in profile as suppliedChecked reveals Yes - turn hinged section 90º prior to useProduct lengths 2.1m, 3.0mActs as vertical dpc YesActs as insulator YesPermits different frame positions YesFrames fitted as work proceeds or later Yes - first or second fix optionsTimber frame / traditional construction Both styles accommodatedMasonry skin styles All popular flat faced masonryUndulating masonry face finishes Seek advice providing details of materialAcoustic insulator Yes reduces direct and flanking transmissionFire rated Yes Prefix denotes 60mins (1hr) fire integrity ratingVertical and horizontal applications Yes –see examplesCompatible with other cavity wall elements No known restrictionsSecuring ties supplied YesWarranty YesPack sizes Packs contain 6 lengthsWeight per pack 2.1m x 6 =13.5 kg. 3m x 6 = 19kg.Material PVCU + rock fibre insulator + stainless tiesColour White extrusionManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulation used 0.035W/mKPossible composite thermal resistance path 2.60 m² K/W (in 100mm cavity)CFC free Yes + zero ODPCAD drawing downloads available Yes


Checked reveals accommodated- see Construction Advantage

Thermal zoning can beintroduced at cill level in usualapplications

The position of the frame isunrestricted within compliantparameters

Head Detail

Pending lintel style, the closercan be used across theopening head

Construction AdvantageChecked reveals instantly accommodated by turning thehinged section 90º. The resulting profile also introducesan isolation strip between the damp masonry and thesection of the frame in check.

SpecifyCavi 60 MWR Type V fire rated + acoustic cavicloser byCavity Trays of Yeovil Somerset BA22 8HU to close cavitywall reveal.Cavi 60 MWR Type V to suit _____mm cavity. (enterappropriate cavity width dimensions).

COMPUTER REFERENCE CODES:CAVI 60 V170 2.1 50 CAVI 60V170 3.0 50CAVI 60 V170 2.1 75 CAVI 60 V170 3.0 75CAVI 60 V170 2.1 100 CAVI 60 V170 3.0 100

Cavi240Type PWIB• Fire-rated integrity barrier• Acts as a DPC• Reduces acoustic flanking transmission• Preformed ready to use, will not sag or distort

Intersection Corners

IntroductionThe Type PWIB promotes acousticcompartmenting, addressing flankingtransmission (sound attenuation) whilstensuring the arrangement protects theparty wall from damp being transmittedfrom the perimeter skin. Available indimensions and profiles to suit solid andcavity party walls interfacing with cavitywalls with specified cavity widths.

References• Separating Wall 4.20 – Limiting thermal

bridging and air leakage – Robust Details

• BS 476 (fire resistance testing)






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Cavi 240 Type PWIB Party Wall Three Function Integrity BarrierExposure rating Very severeCavity - standard sizes accommodated Bespoke up to 100mm maximumSpecial cavity widths accommodated Yes - state actual cavity width requirementStraight party wall intersections Yes - build in profile as illustratedCorner and stepped intersections Yes - matched detail profilesProduct lengths 2.4mActs as vertical dpc YesActs as insulator YesInstalled as wall is raised Yes – insulator compresses for optimum fitTimber frame / traditional construction Both styles accommodatedMasonry skin styles Most. Special version for undulating/split finishAcoustic insulator / barrier Yes – insulation reduces direct and flanking soundFire rated Yes Cavi 240 prefix denotes 240 mins (4 hrs) ratingVertical applications Yes Compatible with most cavity wall elements Yes subject to normal masonry finishesSecuring ties supplied NA enveloped compression as built inPack sizes Packs contain 3 lengthsWeight per pack 13kgMaterial Polypropylene dpc + rock wool insulatorColour Black + yellowManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulation used 0.035W/mKPossible composite thermal resistance path 1.40 m² K/W CFC free Yes + zero ODPCAD drawing downloads available Yes

Typical arrangement with cavityparty wall intersecting perimeterwall. Solid party walls can alsobe appropriately protected

Preformed barrier cornersmaintain acoustic and fireintegrity measures

Construction AdvantageExtended dpc section to the sides protect the acousticinsulation from being surface contaminated with mortarduring construction. that could support hygroscopicinward transmission of moisture if contaminated.

SpecifyCavi 240 Type PWIB by Cavity Trays of Yeovil SomersetBA22 8HU to close party wall / external cavity wallvertical intersections. State actual remaining cavity widthwhere party wall intersects and dimensions of solid orcavity party wall.

COMPUTER REFERENCE CODES:PWIB (STATE CAVITY FILL WIDTH REQUIRED AND PARTY WALL WIDTH)

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18 Best PracticeWorking for YouAn Example of Product DevelopmentThe Cavi 60 Type SAF (Sloping + Acoustic +Fire) was developed following investigationsinto timber frame construction and cavitycompartmenting.

When there is a requirement for a cavityacoustic barrier, there is commonly also anaccompanying need for a cavity fire barrier.Cavity Trays Ltd has combined both functionsinto one product, but importantly at the sametime has developed a new product shape inthe form of a parallelogram.

The result is the improved and more costeffective way of protecting cavity walls shownopposite. A way that naturally deflectsforward any water penetrating the cavity. Italso safeguards against cavity soundtransmission and provides twice the level offire integrity normally sought of a cavity firestop. We believe it to be the most costeffective way available of establishing all therequisite functions within the cavity wall. It supersedes some previous options.Importantly it offers an improved and morereliable way to construct:

During the course of our survey, conventionalrectangular stops were sometimes witnessedwithin the cavity without any dpc tray or waterdeflecting protection. Penetrating water wasobserved pooling on the upper surface of therectangular stop against the timber framemembrane. This is not good practice. The timberframe membrane is not designed to have waterpooling against it during the life of the structureand eventual deterioration of the timber frameis the long-term potential legacy.

In contrast our best practice design naturallydeflects forward any water penetrating thecavity. It also safeguards against cavity soundtransmission. The Cavi 60 prefix denotes a fireintegrity rating of sixty minutes. Thus threesolutions are provided all in one product.

The Cavi 60 Type SAF may be used with ouraccompanying hardcap cavitray in generalapplications, or without the hardcap cavitray inclosing applications where conditions permit.

The Cavi 60 Type SAF - Best practice withmulti-functional advantage.

Note: Our Acoustic Barrier listed in previous publications is no longer available. It has been superseded by thismulti-functional product which offers the specifier a more cost effective, easier to use and quicker to install option. Please specify clearly to ensure your intended choice is ultimately used on the project in question.

Cavi60Type SAF Stop• Acoustic barrier• Fire barrier• Protective shape prevents water tracking• Easy linking and lapping

Typical Section Barrier Overlap

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Cavi 60 Type SAF Stop Sloping Acoustic Fire Rated Cavity Stop/SockExposure rating Very severeCavity - standard sizes accommodated From 100mm Special cavity widths accommodated Yes - state actual cavity width requirementCommon cavity wall applications Yes - build in profile as illustratedCorners and links Angled profile laps whilst maintaining integrityProduct lengths 1.2m & 2.4mProtective sleeving deflects water forward Yes - at all times even where lappedActs as insulator Yes insulates entire cavity width – see belowInstalled as wall is raised Yes – compresses for optimum fit in cured masonryTimber frame / traditional construction Both styles accommodatedMasonry skin styles Accommodate most types of masonry finishAcoustic insulator Yes – reduces direct and flanking transmissionFire rated Yes Cavi 60 prefix denotes 60 mins (1 hr) ratingHorizontal and vertical applications Yes – horizontal and numerous vertical usesCompatible with other cavity wall elements Yes subject to masonry finishes being appropriateSecuring ties supplied NA. Friction fit + naturally occurring ties supportPack sizes Packs contain10 lengthsThermal resistance path Exceeds minimum requirementWeight per pack 10 kgColour RedManufacturing standard BS EN ISO 9001:2000Building Regulations Yes permits regulations to be satisfiedNHBC / Zurich / Premier requirements Yes permits requirements to be satisfied‘k’ value of insulation used 0.035W/mKPossible composite thermal resistance path 2.86 m² K/W CFC free Yes + zero ODPCAD drawing downloads available Yes

Typical section showing barriersloping forward towards outsideskin

Integrity maintained wherebarriers are lapped

Shown with hard cap cavitrayto upper surface

Using the SAF instead of theconventional approach above,will provide more protection. See Construction Advantage

Construction AdvantageUse of the Cavi 60 Type SAF Stop eliminates areas ofunprotected masonry between dpc and stop, identifiedwithin Robust Detail E-FC-3 (external flanking walljunction).

SpecifyCavi 60 Type SAF Stop by Cavity Trays of Yeovil SomersetBA22 8HU, to suit cavity width of _____mm. Compressand friction fit within cavity, taking advantage ofnaturally occurring wall ties as appropriate. Overlapadjoining lengths to maintain protection integrity toappropriate inner leaf course. Link adjoining lengths tomaintain acoustic and fire integrity. Fit optional hard captray if required.

See AdvantageWith Cavitray

COMPUTER REFERENCE CODES:CAVI 60 SAF STOP

IntroductionThis compressible acoustic and fire cavitybarrier has sloping upper and lowersurfaces that ensure penetrating water isdeflected forward. Considered the mostcost-effective way of establishing all threequalities within the cavity wall. Slopingshape means integrity can be maintainedwhenever lengths are lapped. Optionalhard cap dpc cavitray ensures maximumprotection. The compliant oriented shapeis simply compressed and positioned intocured masonry. Placement can be withouttray if appropriate (such as shown in someRobust Details) Alternatively an optionalcavitray caps over the upper slopingsurface.


of sound• Building Regulations Document C L1 & L2• Scottish Tech Standards Part D• Robust Details

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Cavi120Combined Fire & Acoustic Stop• Two hours fire rating• Acoustic barrier• Protective tray• Drop cloak independent of outer skin

IntroductionHorizontal fire barrier cavitycompartmenting plus a drop cloak dpctray. Acts as a fire and acoustic stop andprotects against moisture bridging. Thesupport from the inner skin only means thisproduct can be introduced into curedwalls prior to subsequent masonry lifts.


of sound• Building Regulations Document C L1 & L2• Scottish Tech Standards Part D• Robust Details• British Standard 5628-3• BRE Thermal Insulation Avoiding Risks

Cavi 120 Combined Fire & Acoustic Stop Drop cloak with cavity stop barrierExposure rating Very severeCavity - standard sizes accommodated From 50 up to 100mm Special/unusual cavity widths accommodated Yes - state actual cavity width requirementCommon cavity wall applications Yes - external skin not punctuated for support Corners and links Preformed linking anglesProduct lengths 1.2mProtective sleeving deflects water forward Yes - at all times even where lappedActs as insulator Yes insulates entire cavity width – see belowInstalled as wall is raised Yes – compresses for optimum fit in cured masonry Timber frame / traditional construction Both styles accommodatedMasonry skin styles Compatible with most types of masonry finishAcoustic insulator Yes – reduces flanking transmissionFire rated Yes Prefix denotes 120 mins (2 hrs) ratingHorizontal applications Yes Compatible with other cavity wall elements Yes subject to masonry finishes being appropriateSecuring ties supplied NA - friction fit + builds into inner leaf onlyPack sizes Normally packs of 4 lengthsWeight per pack 5.5kg. Material Rock wool insulatorColour BlackManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulation used 0.035W/mKPossible composite thermal resistance path 1.43 m² K/W (in 50mm cavity)CFC free Yes + zero ODPCAD drawing downloads available Yes

Section

Typical placement showing fireand acoustic stop with dropcloak not punctuating theexternal skin

Construction AdvantageBuilding into the inner skin only permits placement to beintroduced into equally raised cured masonry. Curedmasonry permits the compressive qualities of the barrierto be exercised to achieve optimum functionality andlinking without adversely affecting masonry laying. (For costeffective alternative approach, see entry on page 19).

SpecifyCavi 240 Combined Fire Integrity Stop and Drop CloakBarrier by Cavity Trays of Yeovil Somerset BA22 8HU.Incorporate within cavity, compressing within cavity andbuilding support projection into inner skin. Cavity width _____mm (stipulate).

COMPUTER REFERENCE CODES:CAVI 120 CFA STOP

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Cavi240 Type CFIS• 240 minutes fire integrity rated stops• Easy friction fit• Accompanying moisture protection measures• For cavity widths up to 100mm

IntroductionNon-combustible rock mineral insulatorpromoting acoustic and fire barrierqualities enveloped within a green poly-sleeve. May be compressed to suitcavities of most popular sizes. Preformedtrays (Arresting Barriers or Dropcloaks)available to provide deflective qualitieswithin cavity.


of sound• Building Regulations Document C L1 & L2• Scottish Tech Standards Part D• Robust Details• British Standard 5628-3• BRE Thermal Insulation Avoiding Risks

Cavi 240 Type CFIS Cavicheck Fire Integrity StopExposure rating Very severeCavity - standard sizes accommodated Up to 100mm maximumSpecial cavity widths accommodated Yes – compression fitCommon cavity wall applications Yes - build in cavicheck as illustratedCorners and links Lap and butt optionsProduct lengths 1.2m and 2.4mProtective sleeving Yes Acts as insulator Yes provides highest fire rating – see belowInstalled as wall is raised Yes – compresses for optimum fit in cured masonryTimber frame / traditional construction Both styles accommodatedMasonry skin styles Compresses to accommodate most skin finishesAcoustic insulator Yes – reduces direct and flanking transmissionFire rated Yes Cavi 240 prefix denotes 240 mins (4 hrs) ratingHorizontal and vertical applications Yes – horizontal and vertical usesCompatible with other cavity wall elements Yes – dpc cavitray and caviweep compatibleSecuring ties supplied NA - friction fit + any appropriate tiesPack sizes Packs contain 10 lengthsWeight per pack 7.5 kgMaterial Rock wool insulator within polysleeveColour GreenManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulation used 0.035W/mKPossible composite thermal resistance path 2.86 m² K/W (in 100mm cavity)CFC free Yes + zero ODPCAD drawing downloads available Yes

Typical Section Overlap With Cavitray Plate Level

Construction AdvantageThe four hour rating is the highest currently achievable inthis style of barrier and permits the specifier to introducea higher level of fire protection rating within the financialrestraints normally associated with alternatives withlower ratings.

SpecifyCavi 240 Type CFIS Cavicheck fire integrity stop by CavityTrays of Yeovil Somerset BA22 8HU. Incorporate withincavity, compressing and placing on naturally occurringties if appropriate. Cavity width _____mm (stipulate).Specify if optional cavitray protection to suit is required.

Typical barrier application Barriers lapped within application Barriers with protective tray Barriers used to close at platelevel

Shown withoutprotective cavitray

COMPUTER REFERENCE CODES:CFIS 1.2CFIS 2.4

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Cavi60MWR 200• One hour fire rated barrier• Acoustic barrier• Friction fit• 100mm to 200mm cavity range

IntroductionThis is a larger version of the Type CFISand accommodates cavities from 100mmup to 200mm. The Cavi 60 prefix denotesone hours fire rating. The insulating corepromotes acoustic suppression. Thus thismodel can be used to address both fireand sound barrier requirements.





• Robust Details



Cavi 60 MWR 200 Cavicheck Fire and Acoustic Integrity StopExposure rating Very severeCavity - standard sizes accommodated Up to 100mm up to 200mm maximumSpecial cavity widths accommodated Yes – State actual cavity dimension Common cavity wall applications Yes - build in cavicheck as illustratedCorners and links Lap and butt optionsProduct lengths 1.2m and 2.4mProtective sleeving Yes Acts as insulator Yes - acts as thermal & fire barrier – see belowInstalled as wall is raised Yes – compresses for optimum fit in cured masonryTimber frame / traditional construction Both styles accommodatedMasonry skin styles Accommodate most types of finish to either skinAcoustic insulator Yes – reduces direct and flanking transmissionFire rated Yes Prefix denotes 60 mins (1 hr) fire ratingHorizontal and vertical applications Yes – horizontal and vertical usesCompatible with other cavity wall elements Yes – dpc cavitray and caviweep compatibleSecuring ties supplied NA. Friction fit + naturally occurring traditional tiesPack sizes Packs contain 10 lengthsWeight per pack 10kgMaterial Rock wool insulator within polysleeveColour GreenManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulation used 0.035W/mKPossible composite thermal resistance path 2.37 m² K/W CFC free Yes + zero ODPCAD drawing downloads available Yes

Construction AdvantageExtensively used at plate level to provide cost effectiveclosing with sound and fire barrier qualities. Establishesone hour fire rated protective separation between cavityand roof space.

SpecifyCavi 60 MWR 200 Cavicheck Fire Integrity Stop by CavityTrays of Yeovil Somerset BA22 8HU. Incorporate withincavity, compressing and placing on naturally occurringties if appropriate. Cavity width _____mm (stipulate).Specify if optional cavitray protection to suit is required.

Typical Section Barrier Overlap With Cavitray Plate Level

Shown withoutprotective cavitray

Typical barrier application Barriers lapped within application Barriers with protective tray Barriers used to close at platelevel

COMPUTER REFERENCE CODES:CAVI 60 MWR 20

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Type GBFICS Ground Bearing Floor Insulating Cavitray System (for closing base of cavity wall)• Multi-functional one placement product• Radon and methane cavity barrier• Enhanced perimeter insulation

IntroductionWhen installed around the perimeter of abuilding at ground floor level therequirements of Robust Details can besatisfied with use of the Type GBFICS.Manufactured from profiled semi-rigiddamp course, the Type GBFICS providesthe requisite horizontal dpc requirement toboth skins of the cavity wall. At the sametime the cavity is closed and capped,establishing an integral barrier to guardagainst radon or methane gas risingupwardly via the cavity and permeatingthe building envelope. The inboard sectionextends sufficiently to link with the gasgrade slab membrane. The integralinsulation maximises thermal integrityaround the base of the building.



Type GBFICS Closes external cavity wall at ground floor levelExposure rating Very severe pending profile Cavity - standard sizes accommodated Available to suit all cavity dimensionsSpecial cavity widths accommodated Yes – all dimensions variableStraight reveals Sections available to link with reveal arrangement Product lengths 2.4mReveals Sections available to link with reveal arrangementCorners Internal, external and stepped availableActs as vertical dpc NAActs as insulator YesChanges of level Moulded steps to link at level changesFrames fitted as work proceeds or later NATimber frame / traditional construction Both styles accommodatedMasonry skin styles All popular flat faced masonryUndulating masonry face finishes Normally unaffected by split or undulating facesAcoustic insulator NAFire rated NAVertical and horizontal applications Horizontal onlyCompatible with other cavity wall elements Very few restrictions, pending levelsSecuring ties supplied NAPack sizes Depends on profile sizeWeight per pack Dependent on profile. Average pack weight 15kgMaterial Polypropylene dpc + polystyrene BS 3836-1986Colour Black with white insulatorManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulation used 0.038W/mKPossible composite thermal resistance path 2.63 m² K/W (in 100mm cavity)CFC free Yes+ zero ODPCAD drawing downloads available Yes

Typical Section

Construction AdvantageWhen used on contaminated ground, the Type GBFICSpermits compliance of radon and methane protectionrequirements to be established and at the same time thethermal insulation standards to be maximised in oneproduct placing.

SpecifyType GBFICS by Cavity Trays of Yeovil Somerset BA228HU to close base of external cavity wall. Profile /dimensions to be agreed and schedule issued.

Water arrested by cavitrayupstand is evacuated viacaviweeps

COMPUTER REFERENCE CODES:CBFICS (

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Type GBPWIS Ground Bearing Party Wall Insulating System (for closing base of party cavity wall)• Eliminates need for temporary formwork• Creates and closes cavity arrangement.• Establishes party wall spillage channel• Enhanced perimeter insulation• Multi-functional one placement product

IntroductionThe Ground Bearing Party Wall InsulatingSystem is secured in position betweensemi-detached units, centrally along theline of the party wall. It permits the oversiteconcrete to then be laid without the needof temporary formwork or masonry. TheType GBPWIS is thus enveloped within theconstruction and additionally providesslab edge dpc corroboration with cavityinsulation infill. If an open cavity (channel)is required as per NHBC 6.2 (d), theinsulation can be removed once theoversite concrete has cured. This system isavailable in dimensions to suit all cavitywidths and slab thicknesses.



Type GBPWIS Closes and creates channel within cavity party wallExposure rating NACavity - standard sizes accommodated Available to suit all cavity dimensionsSpecial cavity widths accommodated Yes – all dimensions variableStraight reveals NAChecked reveals NAProduct lengths 2.44m.Acts as vertical dpc As dpc at slab edgesActs as insulator Yes if option to leave insulation insitu is selectedCorners Change of wall direction angles availablePerimeters wall compatibility Links available to unite with gas cavity barriers if fittedTimber frame / traditional construction Both styles accommodatedMasonry skin styles Masonry type does not affect functionalityUndulating masonry face finishes NAAcoustic insulator NAFire rated NAVertical and horizontal applications HorizontalCompatible with other cavity wall elements See Corners / Perimeter wall entries aboveSecuring ties supplied NAPack sizes Depends on profile sizeWeight per pack Dependent on profile. Average pack weight 15kgMaterial Polypropylene dpc + polystyrene BS 3836-1986Colour Black with white insulatorManufacturing standard BS EN ISO 9001:2000Building Regulations Yes regulations can be satisfiedNHBC / Zurich / Premier requirements Yes requirements can be satisfied‘k’ value of insulation used 0.038W/mKPossible composite thermal resistance path 2.60 m² K/W with full insulation insituCFC free Yes+ zero ODPCAD drawing downloads available Yes

Typical Section

Construction AdvantageDispenses with usual formwork and offers a speedy wayto commence the party wall arrangement. The profile isenveloped within the construction and the removableinsulation leaves a drainage channel in excess of thedimensions required of the NHBC to protect from internalflooding / water wash from one dwelling to another.

SpecifyType GBPWIS by Cavity Trays of Yeovil Somerset BA228HU for use at the base between skins of party cavitywall. Profile / dimensions to be agreed to suit party walldimensions.

Insulation can be fully orpartially removed if NHBCchannel option is required

COMPUTER REFERENCE CODES:CAVI FORMER (STATE DIMENSIONS)

Specific Caviclosers and Cavicheck stops offer multi functionality and can providefire resistance and acoustic control qualities to permit construction to comply withthe requirements of the current Building Regulations.

Select appropriate single function or multi function products to help fulfil theconstruction standard you seek.

Products incorporating mineral / rock wool insulating cores are not classified as a possible humancarcinogen as defined by the current HSE ‘CHIP’ Regulations and EU directive 97/69/EC.

Optimised Thermal + Acoustic + Fire Integrity


25

A B

Masonry materials and masonry finishes influenceperformance. The position of the window or door-framelikewise affects the heat loss path as does the insulationvalue of any cavity closer incorporated. All solutionsshould address thermal bridging and condensation andpromote an airtight detail to satisfy the minimum thermalresistance path. At all times one should seek to optimisethe performance of the cavity wall reveal.

In this idealistic example the frame is positioned over thecavity. The thermal resistance has been measured ABC toinclude the closer insulation and the internal wall finish only.

An insulated closer will aid thermal efficiency andcompliance of regulations, conditional on all associatedand adjacent work being constructed to the mostbeneficial design using materials that promote optimumthermal performance with frames positioned to providemaximum thermal efficiency in accordance with bestpractice and legislation as defined within the BuildingRegulations, British Standards & Robust Details.

Adiabatic classification of an insulating medium means thecalculation has been carried out in isolation of adjacentelements on the basis there is no heat loss or gain.

Thermal resistance is the term given to the measure ofthermal resistance of a particular thickness of material.It is equal to the thickness of material (measured inmetres) divided by the conductivity of that material.

All the resistances within a construction detail are addedtogether to establish the overall resistance of that detail.The reciprocal of the combined thermal resistances ofmaterials in the construction, including surfaces, airspaces, thermal links, air gaps and fixings, make up theU-value calculation.

Sound insulation is the ability of structure or element toreduce the transmission of sound through it, beingnormally measured within 100-4000Hz.

Sound absorption is the loss of sound energy on reflectionat a surface and is not a substitute of sound insulation.

Flanking sound is sound not transmitted via a commonbuilding element but transmitted indirectly via paths suchas cavities.

IMPORTANT Request our Main Manual for details of our extensive rangeof cavity trays, which standards and quality certifications are applicable tospecific types, and background information on construction considerations. Certificate No.1172

Confirmed Cavitrays meettechnical requirements

C

Cavity Trays LimitedAdministration Centre Yeovil Somerset BA22 8HU England UK

Tel 01935 474769 Fax 01935 428223www.cavitytrays.com

In 1920 a West Country family of builders startedmaking their own damp courses, flashings andcavitrays, the fourth generation of the samefamily continue the tradition.

The Company is now called Cavity Trays Limitedand can claim more experience, more casehistories and more know-how than any othercompany in this specialised field.

This publication lists the range of caviclosersthat are now also available from the Company.The only cavity tray manufacturer awardedEuropean Technical Approval has thus widenedthe options available to the specifier.

Enjoy the benefit of four generations of experienceand proven performance, by clearly specifyingCavity Trays Limited of Yeovil.

enjoy the benefit offour generations of experience

closing cavity walls closer brochure 2009.pdf · [email protected] this brochure lists...

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