Innovative • Creative • TechnicalA solution for every application

External WallInsulation forRefurbishment

Weber like to refresh, renew & restore.

External Wall Insulation for Refurbishment www.netweber.co.uk2 3

The photographs throughout this guide perfectly represent how Weber External Wall Insulation (EWI) systems can thermally improve and aesthetically transform solid wall properties.

System-built non-traditional or traditional construction, low or high rise – Weber has a rich background of providing EWI systems for refurbishment projects going back over 40 years.

‘Hard-to-treat’ homes are being renovated daily and Weber can make the process easy by offering an extensive variety of systems, full technical and sales back-up and an established installer network.

Because many properties require the repair of concrete structures before EWI systems can be installed, this guide also includesa section covering Weber concrete repair and protection.

This document provides a guide to tackling one of the most important issues facing our ageing housing stock.

Introduction to Weber EWI Systems

ContentsHeat Loss in Non-Traditional and Solid Wall Housing 4U-values Explained 5Benefits of External Wall Insulation 6-7Funding Options 8-9Weber EWI Systems Explained 10-11Colours and Finishes 12-13Case Studies 14-17Concrete Repair & Protection 18-19Flooring Systems 20Weber Service & Technical Support 21About Weber 22About Saint-Gobain 23

External Wall Insulation for Refurbishment www.netweber.co.uk2 3

The photographs throughout this guide perfectly represent how Weber External Wall Insulation (EWI) systems can thermally improve and aesthetically transform solid wall properties.

System-built non-traditional or traditional construction, low or high rise – Weber has a rich background of providing EWI systems for refurbishment projects going back over 40 years.

‘Hard-to-treat’ homes are being renovated daily and Weber can make the process easy by offering an extensive variety of systems, full technical and sales back-up and an established installer network.

Because many properties require the repair of concrete structures before EWI systems can be installed, this guide also includesa section covering Weber concrete repair and protection.

This document provides a guide to tackling one of the most important issues facing our ageing housing stock.

Introduction to Weber EWI Systems

ContentsHeat Loss in Non-Traditional and Solid Wall Housing 4U-values Explained 5Benefits of External Wall Insulation 6-7Funding Options 8-9Weber EWI Systems Explained 10-11Colours and Finishes 12-13Case Studies 14-17Concrete Repair & Protection 18-19Flooring Systems 20Weber Service & Technical Support 21About Weber 22About Saint-Gobain 23

External Wall Insulation for Refurbishment www.netweber.co.uk4 5

Heat Loss in Non-Traditionaland Solid Wall Housing

U-values Explained...

Over 30% of UK and Ireland housing stock have been built with solid walls – classed as ‘hard-to-treat’ because they cannot be thermally improved with the use of cavity wall insulation.

Unlike unfilled cavity wall homes which lose approximately 35% of heat through their walls, solid wall homes will lose as much as 45% heat through untreated walls. Any measures to make heating systems more efficient are made less effective as heat escapes through the external walls.

Solid wall properties generally fall into two main types – traditional construction, built with nine inch solid brickwork or non-traditional housing, constructed of systems using mainly precast concrete panels.

Weber External Wall Insulation is suitable for both traditional and non-traditional housing and can significantly lower heating bills and carbon emissions as well as revitalising the appearance of homes and the local area.

There are approximately two million properties in the UK which were built using non-traditional building methods, most of which were constructed between 1939 and the 1970’s and were built for speed and economy of construction and not for thermal efficiency.

The main building methods employed were either in-situ or precast concrete, metal or timber frame. Although most remain structurally sound, they are extremely poor at retaining warmth, resulting in problems with damp and condensation as well as high heating costs and carbon emissions.

Weber EWI systems have been installed on most non-traditional housing types. Technical advice can be given on the most appropriate systems for each housing type and on-site inspections can be made of work-in-progress to ensure that the work is completed to specification. Weber has an extensive case study library including many non-traditional refurbishments schemes and these are available upon request.

All construction materials have a measure of their thermal conductivity (Lambda value), used together, various materials will determine the overall thermal transmittance of a wall; this is known as the U-value. The lower the U-value, the more thermally efficient the wall construction is.

A U-value will take into consideration the wall thickness & material and any render or insulation used - a typical solid wall (9 inch brickwork) used in a Victorian property has a U-value of 2.06 W/m2K.

Through the use of different insulation types and thicknesses in external wall systems, the thermal performance of a property can be dramatically improved and U-values of 0.30 W/m2K and below can be easily achieved. A full U-value calculation and condensation risk analysis service is available from Weber’s technical team, please contact 08703 330070 for more information.

20%

9%

13%

13%

45%

*Cornish units*Reema hollow panel*Airey precast concrete*Wimpey no-fines

Construction Type

Wall Construction U-value

Insulation Material

EPS Expanded Polystyrene

MFD Dual Density

Mineral Fibre

PIR Polyisocyanurate

W/m2K mm mm mm

Cavity Construction

12mm plaster/102mm brick/ 50mm cavity/102mm brick

U-value – 1.43 W/m2K

0.300.250.200.15

90110140190

100120150200*

7090

110150

12mm plaster/ 100mm med dense block 50mm cavity/102mm brick

U-value – 1.37 W/m2K

0.300.250.200.15

90110140190

100120150200*

7090

110150

Solid construction

12mm plaster/215mm brick/ U-value – 2.06 W/m2K

0.300.250.200.15

90110150200

110130160200*

8090

120150

12mm plaster/ 200mm med density block

U-value – 1.60 W/m2K

0.300.250.200.15

90110140190

110120160200*

8090

120140

12mm plaster/200mm autoclaved aerated block U-value – 0.79 W/m2K

0.300.250.200.15

6080120170

7090

130190

507090

130

12mm plaster/200mm No-Fines concrete

U-value – 2.26 W/m2K

0.300.250.200.15

100120150200

110130170200*

80100120130

12mm plaster/200mm dense concrete

U-value – 3.21 W/m2K

0.300.250.200.15

100120150200

110130170200*

80100120160

Frame construction Lightweight steel frame U-value – 1.81 W/m2K

0.300.250.200.15

90110150200

110130160200*

8090

120150*Below: Non-Traditional properties before refurbishment

*200mm of MFD will achieve a U-value of 0.17W/m2K in these situations.

Notes 1. The insulation thickness shown has been calculated with the latest available Lambda (λ) values for the insulation material declared by the manufacturers at the time of going to print 2. Calculations are based on generic components and need to be verified for any particular structure, components and system. It is essential that you should request specific calculations based on the actual materials to be used. 3. Lightweight steel frame figures do not allow for any insulation medium placed within the studwork.

External Wall Insulation for Refurbishment www.netweber.co.uk4 5

Heat Loss in Non-Traditionaland Solid Wall Housing

U-values Explained...

Over 30% of UK and Ireland housing stock have been built with solid walls – classed as ‘hard-to-treat’ because they cannot be thermally improved with the use of cavity wall insulation.

Unlike unfilled cavity wall homes which lose approximately 35% of heat through their walls, solid wall homes will lose as much as 45% heat through untreated walls. Any measures to make heating systems more efficient are made less effective as heat escapes through the external walls.

Solid wall properties generally fall into two main types – traditional construction, built with nine inch solid brickwork or non-traditional housing, constructed of systems using mainly precast concrete panels.

Weber External Wall Insulation is suitable for both traditional and non-traditional housing and can significantly lower heating bills and carbon emissions as well as revitalising the appearance of homes and the local area.

There are approximately two million properties in the UK which were built using non-traditional building methods, most of which were constructed between 1939 and the 1970’s and were built for speed and economy of construction and not for thermal efficiency.

The main building methods employed were either in-situ or precast concrete, metal or timber frame. Although most remain structurally sound, they are extremely poor at retaining warmth, resulting in problems with damp and condensation as well as high heating costs and carbon emissions.

Weber EWI systems have been installed on most non-traditional housing types. Technical advice can be given on the most appropriate systems for each housing type and on-site inspections can be made of work-in-progress to ensure that the work is completed to specification. Weber has an extensive case study library including many non-traditional refurbishments schemes and these are available upon request.

All construction materials have a measure of their thermal conductivity (Lambda value), used together, various materials will determine the overall thermal transmittance of a wall; this is known as the U-value. The lower the U-value, the more thermally efficient the wall construction is.

A U-value will take into consideration the wall thickness & material and any render or insulation used - a typical solid wall (9 inch brickwork) used in a Victorian property has a U-value of 2.06 W/m2K.

Through the use of different insulation types and thicknesses in external wall systems, the thermal performance of a property can be dramatically improved and U-values of 0.30 W/m2K and below can be easily achieved. A full U-value calculation and condensation risk analysis service is available from Weber’s technical team, please contact 08703 330070 for more information.

20%

9%

13%

13%

45%

*Cornish units*Reema hollow panel*Airey precast concrete*Wimpey no-fines

Construction Type

Wall Construction U-value

Insulation Material

EPS Expanded Polystyrene

MFD Dual Density

Mineral Fibre

PIR Polyisocyanurate

W/m2K mm mm mm

Cavity Construction

12mm plaster/102mm brick/ 50mm cavity/102mm brick

U-value – 1.43 W/m2K

0.300.250.200.15

90110140190

100120150200*

7090

110150

12mm plaster/ 100mm med dense block 50mm cavity/102mm brick

U-value – 1.37 W/m2K

0.300.250.200.15

90110140190

100120150200*

7090

110150

Solid construction

12mm plaster/215mm brick/ U-value – 2.06 W/m2K

0.300.250.200.15

90110150200

110130160200*

8090

120150

12mm plaster/ 200mm med density block

U-value – 1.60 W/m2K

0.300.250.200.15

90110140190

110120160200*

8090

120140

12mm plaster/200mm autoclaved aerated block U-value – 0.79 W/m2K

0.300.250.200.15

6080120170

7090

130190

507090

130

12mm plaster/200mm No-Fines concrete

U-value – 2.26 W/m2K

0.300.250.200.15

100120150200

110130170200*

80100120130

12mm plaster/200mm dense concrete

U-value – 3.21 W/m2K

0.300.250.200.15

100120150200

110130170200*

80100120160

Frame construction Lightweight steel frame U-value – 1.81 W/m2K

0.300.250.200.15

90110150200

110130160200*

8090

120150*Below: Non-Traditional properties before refurbishment

*200mm of MFD will achieve a U-value of 0.17W/m2K in these situations.

Notes 1. The insulation thickness shown has been calculated with the latest available Lambda (λ) values for the insulation material declared by the manufacturers at the time of going to print 2. Calculations are based on generic components and need to be verified for any particular structure, components and system. It is essential that you should request specific calculations based on the actual materials to be used. 3. Lightweight steel frame figures do not allow for any insulation medium placed within the studwork.

External Wall Insulation for Refurbishment www.netweber.co.uk6 7

Loss of heat from a home means that more money is being spent than necessary on heating bills. By reducing energy bills it means carbon emissions are also being reduced helping the environment too.

Adding insulation to a solid brick property can reduce annual heating bills by up to £500 according to research by the Energy Savings Trust but in addition to this, EWI systems will make the property warmer and weather-tight whilst a choice of colours and textures will enhance the appearance substantially.

Benefits of External Wall Insulation

The benefits of using EWI systems include...

Why Weber...?

• Lower U-values are generally made possible through insulating externally rather than using internal systems and no internal living space is lost.

• As work is carried out to the outside walls, disruption to the household, is minimised.

• The risk of condensation within the wall structure and thermal bridging is eliminated.

• A weatherproof, attractive and generally maintenance-free new exterior is provided as part of the thermal cladding of the building.

• Work can be carried out alongside other trades such as window replacement and re-roofing.

• The system is fitted to meet individual house requirements with an extensive choice of colours.

• Range of finishes available to suit planning requirements i.e. brick finish.

Did you know that nearly half of all heat lost from an uninsulated solid wall home is lost through its walls…?

Weber EWI systems have been awarded certification by the British Board of Agrément (BBA), National Standards Authority of Ireland (NSAI) and are recommended by the Energy Savings Trust (EST) for their proven ability to reduce domestic energy costs. Weber provides full technical advice and application support, helping customers and clients to specify the right solution for each project. Weber fully supports the importance of training through in-house programmes and group academies across the UK and Ireland to ensure correct installation and application every time. Weber manufactures all renders used in its EWI systems in the UK and Ireland from plants in three locations, thereby reducing transportation costs and carbon footprint when compared to systems using imported renders. It also ensures that product quality is maintained. Weber EWI systems carry a full 10-year product guarantee.

Nearly 40 years of experience in the industry offers a great insight into how refurbishment schemes and projects work, not only to improve the aesthetic appeal and thermal efficiency of the properties but it is often the fundamental catalyst to the social regeneration for the area, and is paramount in promoting community activity and sustainability.

Before After

10 year guarantee

certificate 09/4670

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External Wall Insulation for Refurbishment www.netweber.co.uk6 7

Loss of heat from a home means that more money is being spent than necessary on heating bills. By reducing energy bills it means carbon emissions are also being reduced helping the environment too.

Adding insulation to a solid brick property can reduce annual heating bills by up to £500 according to research by the Energy Savings Trust but in addition to this, EWI systems will make the property warmer and weather-tight whilst a choice of colours and textures will enhance the appearance substantially.

Benefits of External Wall Insulation

The benefits of using EWI systems include...

Why Weber...?

• Lower U-values are generally made possible through insulating externally rather than using internal systems and no internal living space is lost.

• As work is carried out to the outside walls, disruption to the household, is minimised.

• The risk of condensation within the wall structure and thermal bridging is eliminated.

• A weatherproof, attractive and generally maintenance-free new exterior is provided as part of the thermal cladding of the building.

• Work can be carried out alongside other trades such as window replacement and re-roofing.

• The system is fitted to meet individual house requirements with an extensive choice of colours.

• Range of finishes available to suit planning requirements i.e. brick finish.

Did you know that nearly half of all heat lost from an uninsulated solid wall home is lost through its walls…?

Weber EWI systems have been awarded certification by the British Board of Agrément (BBA), National Standards Authority of Ireland (NSAI) and are recommended by the Energy Savings Trust (EST) for their proven ability to reduce domestic energy costs. Weber provides full technical advice and application support, helping customers and clients to specify the right solution for each project. Weber fully supports the importance of training through in-house programmes and group academies across the UK and Ireland to ensure correct installation and application every time. Weber manufactures all renders used in its EWI systems in the UK and Ireland from plants in three locations, thereby reducing transportation costs and carbon footprint when compared to systems using imported renders. It also ensures that product quality is maintained. Weber EWI systems carry a full 10-year product guarantee.

Nearly 40 years of experience in the industry offers a great insight into how refurbishment schemes and projects work, not only to improve the aesthetic appeal and thermal efficiency of the properties but it is often the fundamental catalyst to the social regeneration for the area, and is paramount in promoting community activity and sustainability.

Before After

10 year guarantee

certificate 09/4670

Ima

ge

s fro

m: w

ww

.ho

me

hea

tse

eke

rs.c

o.uk

Ima

ge

s fro

m: w

ww

.ho

me

hea

tse

eke

rs.c

o.uk

External Wall Insulation for Refurbishment www.netweber.co.uk8 9

With nearly 40 years of experience in the EWI industry has given Weber a deep insight into the successful delivery of refurbishment projects and area based schemes. Weber understands what it takes to ensure thermal performance meets the technical specification and the finish significantly improves buildings’ aesthetic appeal. Weber also knows how to ensure, through promoting community activity and sustainability, that refurbishment projects provide a fundamental catalyst to an area’s social regeneration.

weber.therm EWI systems are BBA & NSAI Certified for use on grant funded schemes with homeowners, social and private landlords likely to be eligible for funding support via ECO or BEH. Weber can help in this process as it has established relationships with energy suppliers and managing agents to smooth the administration associated with applying for and securing funding.

Funding Options

Green Deal (UK)The Green Deal will benefit millions of homeowners and businesses across the UK with smarter, warmer and more comfortable buildings as well as delivering significant long term fuel savings.

The introduction of the Government’s new “Green Deal” financial mechanism eliminates the need to pay up front for energy efficiency measures installed on homes or businesses. Instead, the cost of the measures will be recovered through instalments made on energy bills over several years. Green Deal measures must meet the ‘Golden Rule’, in other words the savings on energy bills should be greater than the instalments paid through the energy bill.

External Wall Insulation may not meet the ‘Golden Rule’ but significant ECO (Energy Company Obligation) funding is available to reduce the size of the Green Deal ‘loan’ ensuring it meets the Golden Rule criteria. The Green Deal and ECO are underpinned by comprehensive accreditation of the energy saving measures, the installing companies and the energy assessors of the property. Weber EWI systems already meet the proposed Green Deal requirements with training aligned to the Green Deal framework available to ensure that our installers can become ‘Green Deal Approved’.

For more information on Green Deal visit www.decc.gov.uk or www.greendealorb.co.uk

ECO (Energy Company Obligation) (UK)Each year, £1.3 billion of subsidies and grants to encourage energy efficiency in homes will be delivered in the form of the Energy Company Obligation (ECO). The ECO scheme will take over from the CERT (Carbon Emission Reduction Target) and CESP (Community Energy Saving Programme) schemes.

ECO is comprised of three distinct targets...Carbon Emission Reduction Obligation (CERO): Focusing on hard to treat homes and, in particular, measures that cannot be fully funded through the Green Deal as they do not meet the ‘Golden Rule’. Solid wall insulation and hard-to treat cavity wall insulation are the primary measures that the Government intends to promote under this target.

Carbon Savings Community Obligation (CSCO): Focusing on the provision of insulation measures to domestic energy users that live within an area of low income. This target has a sub-target, which states that 15% of each supplier’s Carbon Savings Community Obligation must be achieved by promoting measures to domestic energy users living in rural areas.

Home Heating Cost Reduction Obligation (HHCRO): This requires energy suppliers to provide measures which improve the ability of low income and vulnerable households (the ‘Affordable Warmth Group’) to affordably heat their homes via the promotion of heat qualifying actions. A heat qualifying action is the installation of a measure that will result in cost savings.

For more information on ECO visit www.decc.gov.uk or www.greendealorb.co.uk

BEH (Better Energy Homes) Scheme (Ireland)The Irish Government, through SEAI (Sustainable Energy Authority of Ireland), continues to encourage people to improve the energy performance of their homes by incentivizing the cost of installing various upgrade measures. The Better Energy Scheme provides assistance to homeowners to reduce energy use, costs and greenhouse gas emissions and improve the comfort levels within their home.

The objectives of the scheme are to:• Support homeowners in making intelligent choices

to improve the energy performance of their home• Reduce energy use, costs and greenhouse

gas emissions• Build market capacity and competence by driving

contractor standards and quality• Stimulating market innovation

External Wall Insulation is one of the measures that the SEAI scheme is targeting, particularly on solid wall properties where significant heat loss is experienced. EWI work may be exempt from planning consent if it does not materially affect the character of the structure or neighbouring buildings and Weber can offer a wide range of finishes to provide the most suitable finish to meet local planning needs (if in doubt contact your local planning area). All homes built before 2006 are eligible in the scheme and grant funding is available for individual homeowners as well as landlords of multiple properties.

The incentive is in the form of a cash grant which is fixed, irrespective of home size, though where actual expenditure is lower than the grant value only the lower amount will be paid.

For more information on BEH grants visit www.seai.ie/Grants/Better_energy_homes

BISF Homes - Before & After

Airey Homes - Before & After

No Fines Homes - Before & After

External Wall Insulation for Refurbishment www.netweber.co.uk8 9

With nearly 40 years of experience in the EWI industry has given Weber a deep insight into the successful delivery of refurbishment projects and area based schemes. Weber understands what it takes to ensure thermal performance meets the technical specification and the finish significantly improves buildings’ aesthetic appeal. Weber also knows how to ensure, through promoting community activity and sustainability, that refurbishment projects provide a fundamental catalyst to an area’s social regeneration.

weber.therm EWI systems are BBA & NSAI Certified for use on grant funded schemes with homeowners, social and private landlords likely to be eligible for funding support via ECO or BEH. Weber can help in this process as it has established relationships with energy suppliers and managing agents to smooth the administration associated with applying for and securing funding.

Funding Options

Green Deal (UK)The Green Deal will benefit millions of homeowners and businesses across the UK with smarter, warmer and more comfortable buildings as well as delivering significant long term fuel savings.

The introduction of the Government’s new “Green Deal” financial mechanism eliminates the need to pay up front for energy efficiency measures installed on homes or businesses. Instead, the cost of the measures will be recovered through instalments made on energy bills over several years. Green Deal measures must meet the ‘Golden Rule’, in other words the savings on energy bills should be greater than the instalments paid through the energy bill.

External Wall Insulation may not meet the ‘Golden Rule’ but significant ECO (Energy Company Obligation) funding is available to reduce the size of the Green Deal ‘loan’ ensuring it meets the Golden Rule criteria. The Green Deal and ECO are underpinned by comprehensive accreditation of the energy saving measures, the installing companies and the energy assessors of the property. Weber EWI systems already meet the proposed Green Deal requirements with training aligned to the Green Deal framework available to ensure that our installers can become ‘Green Deal Approved’.

For more information on Green Deal visit www.decc.gov.uk or www.greendealorb.co.uk

ECO (Energy Company Obligation) (UK)Each year, £1.3 billion of subsidies and grants to encourage energy efficiency in homes will be delivered in the form of the Energy Company Obligation (ECO). The ECO scheme will take over from the CERT (Carbon Emission Reduction Target) and CESP (Community Energy Saving Programme) schemes.

ECO is comprised of three distinct targets...Carbon Emission Reduction Obligation (CERO): Focusing on hard to treat homes and, in particular, measures that cannot be fully funded through the Green Deal as they do not meet the ‘Golden Rule’. Solid wall insulation and hard-to treat cavity wall insulation are the primary measures that the Government intends to promote under this target.

Carbon Savings Community Obligation (CSCO): Focusing on the provision of insulation measures to domestic energy users that live within an area of low income. This target has a sub-target, which states that 15% of each supplier’s Carbon Savings Community Obligation must be achieved by promoting measures to domestic energy users living in rural areas.

Home Heating Cost Reduction Obligation (HHCRO): This requires energy suppliers to provide measures which improve the ability of low income and vulnerable households (the ‘Affordable Warmth Group’) to affordably heat their homes via the promotion of heat qualifying actions. A heat qualifying action is the installation of a measure that will result in cost savings.

For more information on ECO visit www.decc.gov.uk or www.greendealorb.co.uk

BEH (Better Energy Homes) Scheme (Ireland)The Irish Government, through SEAI (Sustainable Energy Authority of Ireland), continues to encourage people to improve the energy performance of their homes by incentivizing the cost of installing various upgrade measures. The Better Energy Scheme provides assistance to homeowners to reduce energy use, costs and greenhouse gas emissions and improve the comfort levels within their home.

The objectives of the scheme are to:• Support homeowners in making intelligent choices

to improve the energy performance of their home• Reduce energy use, costs and greenhouse

gas emissions• Build market capacity and competence by driving

contractor standards and quality• Stimulating market innovation

External Wall Insulation is one of the measures that the SEAI scheme is targeting, particularly on solid wall properties where significant heat loss is experienced. EWI work may be exempt from planning consent if it does not materially affect the character of the structure or neighbouring buildings and Weber can offer a wide range of finishes to provide the most suitable finish to meet local planning needs (if in doubt contact your local planning area). All homes built before 2006 are eligible in the scheme and grant funding is available for individual homeowners as well as landlords of multiple properties.

The incentive is in the form of a cash grant which is fixed, irrespective of home size, though where actual expenditure is lower than the grant value only the lower amount will be paid.

For more information on BEH grants visit www.seai.ie/Grants/Better_energy_homes

BISF Homes - Before & After

Airey Homes - Before & After

No Fines Homes - Before & After

External Wall Insulation for Refurbishment www.netweber.co.uk10 11

Weber EWI Systems ExplainedExternal Wall Insulation is a thermally insulated, render protected, decorative exterior cladding which can be used to thermally improve and aesthetically transform solid wall masonry, system built non-traditional, low or high rise buildings.

weber.therm EWI Systems

weber.therm XPVersatility, speed and simplicity are the characteristics of

weber.therm XP, the one-coat mineral render system using

glass fibre mesh reinforcement is suitable for machine or

hand application. Unlike traditional multicoat systems, Weber’s

expertise in mineral renders has resulted in a breakthrough

concept – a one-coat, through-coloured mineral render which

can be applied directly to all major insulation types.

weber.therm XMweber.therm XM is a lightweight, thin-coat, polymer render

system using glass fibre mesh reinforcement, suitable for

hand application. The first coat of render is 3mm and once

cured a further 3mm of render can be applied and finished

in a scraped texture or with dry dash aggregate. Alternatively

primer and a simple synthetic finish can be applied directly on

to the cured base coat in an array of colours and shades.

weber.therm FTWeber has developed a rail system to assist in the

refurbishment of non-traditional housing types which do not

have a level or flat substrate. The weber.therm FT rails have

been engineered to span thin precast panels, fixing directly

into the concrete column structure. This avoids the risk of

damage to the panels and ties from either direct fixing or

overloading. The rails have been designed to support the

EWI system and to be independent of the panel background.

weber.therm XBweber.therm XB is a system using authentic brick-slips which

are attached directly to insulation and fixed using a high

performance polymer mortar. The mortar joints are then

recreated using weber.rend BPM pointing mortar. Special

‘pistol’ returns on corners provide the realistic brickwork effect.

weber.rend LAC as a bond

weber.rend LAC

Bead

weber.rend LAC

weber PR310 or weber PR330 as appropriate

Synthetic finish weber.plast TF, weber.sil TF, weber.plast Por weber.sil P

Suitable substrate prepared for EWI

Suitable substrate prepared for EWI

Insulant Insulant

Suitable fixing Suitable fixing

weber.therm M1

Mesh cloth Mesh cloth

weber.therm M1Scraped finish (illustrated), dry-dash, brick effect, light ashlar or spray roughcast available

Bead

BeadStarter rail

Stand off rail

Weather defence cavity or creation of flat substrate

Suitable substrate prepared for EWI

Stand off rail

Choice of EWI system applied (weber.therm XP shown)

Suitable fixing

Insulant

Bead

Choice of insulation and finishThere are various types of insulation and finishes that can be used in conjunction with these different systems, the most popular include...

* Render Brick Effect only

Suitable fixing

System > weber.therm XP weber.therm XM weber.therm FT weber.therm XB

Choice of insulant

Choice of finish

EPS (Expanded Polystyrene)

• Cost-effective

• Graphite impregnated for greater thermal efficiency

Suitable substrate prepared for EWI

Insulant

weber.rend EXB

Brick slip

weber.rend BPM

Scraped Finish

Dry Dash

Brick/ Brick Effect

Synthetic Finish

Light Ashlar Detailing

PIR (Polyisocyanurate)

• Excellent thermal performance

• Unaffected by moisture

MFD (Mineral Wool)

• Non-combustible

• Good acoustic properties

* * *

External Wall Insulation for Refurbishment www.netweber.co.uk10 11

Weber EWI Systems ExplainedExternal Wall Insulation is a thermally insulated, render protected, decorative exterior cladding which can be used to thermally improve and aesthetically transform solid wall masonry, system built non-traditional, low or high rise buildings.

weber.therm EWI Systems

weber.therm XPVersatility, speed and simplicity are the characteristics of

weber.therm XP, the one-coat mineral render system using

glass fibre mesh reinforcement is suitable for machine or

hand application. Unlike traditional multicoat systems, Weber’s

expertise in mineral renders has resulted in a breakthrough

concept – a one-coat, through-coloured mineral render which

can be applied directly to all major insulation types.

weber.therm XMweber.therm XM is a lightweight, thin-coat, polymer render

system using glass fibre mesh reinforcement, suitable for

hand application. The first coat of render is 3mm and once

cured a further 3mm of render can be applied and finished

in a scraped texture or with dry dash aggregate. Alternatively

primer and a simple synthetic finish can be applied directly on

to the cured base coat in an array of colours and shades.

weber.therm FTWeber has developed a rail system to assist in the

refurbishment of non-traditional housing types which do not

have a level or flat substrate. The weber.therm FT rails have

been engineered to span thin precast panels, fixing directly

into the concrete column structure. This avoids the risk of

damage to the panels and ties from either direct fixing or

overloading. The rails have been designed to support the

EWI system and to be independent of the panel background.

weber.therm XBweber.therm XB is a system using authentic brick-slips which

are attached directly to insulation and fixed using a high

performance polymer mortar. The mortar joints are then

recreated using weber.rend BPM pointing mortar. Special

‘pistol’ returns on corners provide the realistic brickwork effect.

weber.rend LAC as a bond

weber.rend LAC

Bead

weber.rend LAC

weber PR310 or weber PR330 as appropriate

Synthetic finish weber.plast TF, weber.sil TF, weber.plast Por weber.sil P

Suitable substrate prepared for EWI

Suitable substrate prepared for EWI

Insulant Insulant

Suitable fixing Suitable fixing

weber.therm M1

Mesh cloth Mesh cloth

weber.therm M1Scraped finish (illustrated), dry-dash, brick effect, light ashlar or spray roughcast available

Bead

BeadStarter rail

Stand off rail

Weather defence cavity or creation of flat substrate

Suitable substrate prepared for EWI

Stand off rail

Choice of EWI system applied (weber.therm XP shown)

Suitable fixing

Insulant

Bead

Choice of insulation and finishThere are various types of insulation and finishes that can be used in conjunction with these different systems, the most popular include...

* Render Brick Effect only

Suitable fixing

System > weber.therm XP weber.therm XM weber.therm FT weber.therm XB

Choice of insulant

Choice of finish

EPS (Expanded Polystyrene)

• Cost-effective

• Graphite impregnated for greater thermal efficiency

Suitable substrate prepared for EWI

Insulant

weber.rend EXB

Brick slip

weber.rend BPM

Scraped Finish

Dry Dash

Brick/ Brick Effect

Synthetic Finish

Light Ashlar Detailing

PIR (Polyisocyanurate)

• Excellent thermal performance

• Unaffected by moisture

MFD (Mineral Wool)

• Non-combustible

• Good acoustic properties

* * *

External Wall Insulation for Refurbishment www.netweber.co.uk12 13

Colours & FinishesWeber has the widest available range of texture and colour finishes. Weber use mineral renders which are highly durable and suitable for the toughest weather conditions. Natural stone pastels, vibrant acrylic colours, dry dash aggregate tones, rendered brick appearance and authentic brick slips are all

available with weber.therm systems. The range of colours and finishes available for weber.therm EWI systems are too numerous to show in this guide. Shown here are representations of the different types of finishes available. Colour cards and samples are available upon request.

Scraped TextureMineral renders are extremely hardwearing and a wide range of colours and textures are available. Scraped textures provide a natural stone appearance and require no long term maintenance over the life of the system.

Dry Dash AggregateAttractive dash aggregate finishes can be achieved through the use of different colour combinations of render and aggregate and are extremely hard wearing.

Coloured Synthetic FinishIf more vibrant colours are required the use of synthetic finishes with a light aggregate texture are recommended, a wide range of colours are available and can be selected from a colour card available on request.

Spray Roughcast TextureMineral Renders can also provide a spray roughcast texture popular in South West England and Scotland.

Brick Effect FinishesFinishes to match or replace traditional brick work can either be achieved using specially produced brick slips or by using two coats of render to create a brick effect.

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External Wall Insulation for Refurbishment www.netweber.co.uk12 13

Colours & FinishesWeber has the widest available range of texture and colour finishes. Weber use mineral renders which are highly durable and suitable for the toughest weather conditions. Natural stone pastels, vibrant acrylic colours, dry dash aggregate tones, rendered brick appearance and authentic brick slips are all

available with weber.therm systems. The range of colours and finishes available for weber.therm EWI systems are too numerous to show in this guide. Shown here are representations of the different types of finishes available. Colour cards and samples are available upon request.

Scraped TextureMineral renders are extremely hardwearing and a wide range of colours and textures are available. Scraped textures provide a natural stone appearance and require no long term maintenance over the life of the system.

Dry Dash AggregateAttractive dash aggregate finishes can be achieved through the use of different colour combinations of render and aggregate and are extremely hard wearing.

Coloured Synthetic FinishIf more vibrant colours are required the use of synthetic finishes with a light aggregate texture are recommended, a wide range of colours are available and can be selected from a colour card available on request.

Spray Roughcast TextureMineral Renders can also provide a spray roughcast texture popular in South West England and Scotland.

Brick Effect FinishesFinishes to match or replace traditional brick work can either be achieved using specially produced brick slips or by using two coats of render to create a brick effect.

Spra

y Ro

ughc

ast

Te

xtur

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Scra

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d T

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Scra

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ext

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Dry

Da

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reg

ate

Synt

hetic

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lour

Scra

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d T

ext

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Dry

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gg

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ate

Synt

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lour

Bric

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Rend

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rick

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14 15

Case Studies

System:weber.therm XM

Client:Pennine Housing, part of Together Housing Group

Contractor:Wates Living Space (East)

Applicator:Slimline Building Services Ltd, Astley Facades Ltd, Retrofit UK Ltd

Architect:PRP Architects

System:weber.therm XP & weber.therm XB

Client:East Riding of Yorkshire Council

Architect: Atkins Ltd

Contractor:Interserve Project Services

Applicator:Lloyd Clough & Sons Ltd & Slimline Building Services

Project: Mixenden, Calderdale, Yorkshire

Project: Goole Changing Streets

Before

After

Before

After

1|

3|

The 1,000-home thermal makeover programme in Mixenden consisted of wide mix of high and low rise non-traditional housing types including Airey, No Fines and Trusteel constructions. The application of weber.therm XM EWI contributed to the energy efficiency of these homes while simultaneously transforming the external aesthetics of the housing stock.

The technical difficulty that this large project offered was the vast array of housing types – high rise and low rise and the assortment of non-traditional construction types which meant that each aspect of the project had varying specifications, installing applicators and their

SolutionUnder a phased construction programme, the front façade to rows of privately owned terraced houses has been improved throughout the area of Goole. The existing finishes ranged from stained brickwork to old tired looking render.

weber.therm XP was specified as the external wall insulation system for carrying out improvements to terraced properties. weber.therm XP is a one-coat mineral render system with a mesh reinforcing layer, providing a fast-track weatherproof finish over thermal insulation boards. The one-coat render application significantly reduced the ‘programme of works’ and associated costs and minimised disruption to the occupiers.

own design features and problems to overcome.

Extensive use of Dry Dash decorative aggregates was used due to the excellent hard wearing characteristics, proven longevity and very low maintenance of the finish. The Trusteel properties received the attractive weber.rend RB system which achieves a convincing, multi-layer, brick-effect finish at a fraction of the cost of traditional brick, adding colour and texture to these rejuvenated buildings improving the poorest U-value of 2.15 W/m²K to a very comfortable 0.29 W/m²k.

The weber.therm XP EWI system has provided the attractive and thermally effective answer for these hard-to-treat housing refurbishments by slashing the original U-values of 2.90 W/m²K to 0.32 W/m²K.

The decorative finish was chosen by the home owners from an attractive range offered, including real brick finish using weber.therm XB brick slips.

System:weber.therm XP

Contractor:TSP (Trak Special Projects)

Applicator: M. Clarke & Sons Contracts Limited

System:weber.therm XM

Client:Norfolk County Council

ArchitectNPS Group

ContractorKier Eastern

Applicator:M. Clarke & Sons Contracts Limited

Project: Essendon Lodge Project: Bure Valley School, Norfolk2| 4|

SolutionThe innovative one-coat, through-coloured weber.therm XP External Wall Insulation (EWI) system has been used in the dramatic thermal and aesthetic upgrade of a mid 19th Century traditional estate lodge house.

The weber.therm XP EWI system uses 60mm, high-density wall insulation panels mechanically fixed to the sound brick substrate. The architect and client called for the built-out base detail, and mid-floor feature band running around the façade, to be maintained when the new render coat was applied.

Solutionweber.therm XM was specified for the remodelling of the Bure Valley School. With aesthetics in mind, the architect’s brief was to integrate a renovated section of the school with new additions to the building. it was also vital to greatly improve the thermal efficiency and performance of the older retained sections of the facility, the original buildings being of partial cavity wall construction.

The Weber EWI system met this criteria and the result is a modern, exciting and efficient place of education. The weber.therm XM EWI system

The weber.therm M1 one-coat, through-coloured render was applied by machine and includes meshcloth reinforcement. The resulting finish enhances the attractive original design of the property whilst delivering a dramatic improvement to the thermal performance of the building.

specified 60mm of EPS for the original building sections and on the new build section 200mm of the same insulation was applied to the blockwork skin prior to the same render finish. The weber.plast TF decorative finish provided a fine textured, highly weather resistant and durable surface,

Pupils now enjoy greatly improved classroom facilities and a fresh, bright and vibrant exterior colour scheme.

External Wall Insulation for Refurbishment www.netweber.co.uk

Before

After

14 15

Case Studies

System:weber.therm XM

Client:Pennine Housing, part of Together Housing Group

Contractor:Wates Living Space (East)

Applicator:Slimline Building Services Ltd, Astley Facades Ltd, Retrofit UK Ltd

Architect:PRP Architects

System:weber.therm XP & weber.therm XB

Client:East Riding of Yorkshire Council

Architect: Atkins Ltd

Contractor:Interserve Project Services

Applicator:Lloyd Clough & Sons Ltd & Slimline Building Services

Project: Mixenden, Calderdale, Yorkshire

Project: Goole Changing Streets

Before

After

Before

After

1|

3|

The 1,000-home thermal makeover programme in Mixenden consisted of wide mix of high and low rise non-traditional housing types including Airey, No Fines and Trusteel constructions. The application of weber.therm XM EWI contributed to the energy efficiency of these homes while simultaneously transforming the external aesthetics of the housing stock.

The technical difficulty that this large project offered was the vast array of housing types – high rise and low rise and the assortment of non-traditional construction types which meant that each aspect of the project had varying specifications, installing applicators and their

SolutionUnder a phased construction programme, the front façade to rows of privately owned terraced houses has been improved throughout the area of Goole. The existing finishes ranged from stained brickwork to old tired looking render.

weber.therm XP was specified as the external wall insulation system for carrying out improvements to terraced properties. weber.therm XP is a one-coat mineral render system with a mesh reinforcing layer, providing a fast-track weatherproof finish over thermal insulation boards. The one-coat render application significantly reduced the ‘programme of works’ and associated costs and minimised disruption to the occupiers.

own design features and problems to overcome.

Extensive use of Dry Dash decorative aggregates was used due to the excellent hard wearing characteristics, proven longevity and very low maintenance of the finish. The Trusteel properties received the attractive weber.rend RB system which achieves a convincing, multi-layer, brick-effect finish at a fraction of the cost of traditional brick, adding colour and texture to these rejuvenated buildings improving the poorest U-value of 2.15 W/m²K to a very comfortable 0.29 W/m²k.

The weber.therm XP EWI system has provided the attractive and thermally effective answer for these hard-to-treat housing refurbishments by slashing the original U-values of 2.90 W/m²K to 0.32 W/m²K.

The decorative finish was chosen by the home owners from an attractive range offered, including real brick finish using weber.therm XB brick slips.

System:weber.therm XP

Contractor:TSP (Trak Special Projects)

Applicator: M. Clarke & Sons Contracts Limited

System:weber.therm XM

Client:Norfolk County Council

ArchitectNPS Group

ContractorKier Eastern

Applicator:M. Clarke & Sons Contracts Limited

Project: Essendon Lodge Project: Bure Valley School, Norfolk2| 4|

SolutionThe innovative one-coat, through-coloured weber.therm XP External Wall Insulation (EWI) system has been used in the dramatic thermal and aesthetic upgrade of a mid 19th Century traditional estate lodge house.

The weber.therm XP EWI system uses 60mm, high-density wall insulation panels mechanically fixed to the sound brick substrate. The architect and client called for the built-out base detail, and mid-floor feature band running around the façade, to be maintained when the new render coat was applied.

Solutionweber.therm XM was specified for the remodelling of the Bure Valley School. With aesthetics in mind, the architect’s brief was to integrate a renovated section of the school with new additions to the building. it was also vital to greatly improve the thermal efficiency and performance of the older retained sections of the facility, the original buildings being of partial cavity wall construction.

The Weber EWI system met this criteria and the result is a modern, exciting and efficient place of education. The weber.therm XM EWI system

The weber.therm M1 one-coat, through-coloured render was applied by machine and includes meshcloth reinforcement. The resulting finish enhances the attractive original design of the property whilst delivering a dramatic improvement to the thermal performance of the building.

specified 60mm of EPS for the original building sections and on the new build section 200mm of the same insulation was applied to the blockwork skin prior to the same render finish. The weber.plast TF decorative finish provided a fine textured, highly weather resistant and durable surface,

Pupils now enjoy greatly improved classroom facilities and a fresh, bright and vibrant exterior colour scheme.

External Wall Insulation for Refurbishment www.netweber.co.uk

Before

After

16 17

System:weber.therm XM &weber.rend RB

Client:Church of Ireland

Contractor:Active Thermal Building Services

Architect:Active Thermal Building Service

Project: Damer Court, Upper Wellington Street, DublinProject: B/E Aerospace 7|5|SolutionThe homes at Damer Court owned by the Church of Ireland provide accommodation for those in need and runs 52 metres along Upper Wellington Street. Built in 1972 with narrow cavity brickwork and no insulation, Weber EWI has enhanced these homes both aesthetically and thermally with striking results achieved with the use of the versatile weber.rend RB system.

weber.rend RB produces a superb brick finish in just a fraction of the time and cost of full brickwork cladding. It is the combination of two coloured polymer modified mortars used

to create a brickwork pattern providing this classic red brick finish to harmonise the newly renovated building with adjacent properties.

The programme of renovations used 80mm thick EPS insulation board fixed to all external walls creating homes which are well above the required Part L Building Regulations.

The dramatic improvement in comfort levels and thermal efficiency is already evident when comparing heating bills to previous years and the external finish has proved to be a perfect fit for the locality.

System:weber.therm XM &weber.therm XB

Client:Walsall Housing Group

Contractor:Frank Haslam Milan

Architect:Gardner Stewart Architects

Applicator:Slimline Building Services Ltd

System: weber.therm XM

Client:Your Homes Newcastle, Bridging Newcastle Gateshead, New Dealfor Communities,Gentoo Homes

Contractor:Wates Living Space

Applicator:Astley Facades

Project: Brownhills RegenerationProject: Cruddas Park High Rise Regeneration Programme, Newcastle-upon-Tyne 8|6|

SolutionWhen 209 REEMA hollow cast concrete panel homes were transferred to the Walsall Housing Group after 50 years of neglect, the housing association faced a stark choice. Demolition or renovation.

weber.therm XM and weber.therm XB, the external wall insulation and cladding systems, were used throughout this substantial renovation programme and has achieved three key performance indicators. Dramatic thermal efficiency improvement, aesthetically attractive exterior renovation and on-time project completion.

SolutionFive tower blocks have undergone a full refurbishment both internally and externally. The use of BBA approved weber.therm XM External Wall Insulation system has created thermally efficient buildings with reduced energy costs and CO2 emissions. The existing U-value of 1.45 W/m²K has been improved to a comfortable 0.29 W/m²K whilst completely rejuvenating the exterior aesthetics. Residents now enjoy technically advanced homes that enhance the community landscape.

In harmony with improved glazing, doors and roof insulation, the weber.therm XM and weber.therm XB EWI system has more than doubled the SAP rating of these homes from a typical 1950’s level of just 41 to today, in advance of the Decent Homes Standard, a superior SAP rating of 88. Residents are reporting that their energy costs have been cut to a third of the previous expense of trying to heat these poorly insulated properties prior to renovation.

Following consultation, weber.therm XM external wall insulation system with two render finishes was specified. A polymer modified top coat render with an aggregate dry dash finish was selected as the main overall finish due to the excellent water shedding properties, with contrasting feature bands created by use of weber.plast TF, a synthetic finish available in over 250 colours. Mineral fibre was selected as the choice of insulation to achieve the specified U-value as it is non-combustible and also greatly reduces sound.

SolutionA 1970’s industrial office building in Northern Ireland has been dramatically transformed into a stylish and efficient 21st century office environment by the skilful application of weber.therm XM EWI system.

The original building followed construction methods of the period with a brickwork plinth up to window cill height and a blockwork structure with wall cladding up to the flat roof fascia.

System: weber.therm XM

Client: B/E Aerospace Inc

Contractor: Dunmore Construction

Applicator: M Clarke & Sons Contracts Limited

Before

Before

After

Limited insulation had been integrated and the building was difficult and expensive to heat in winter.

Nearly 400m² of weber.therm XM EWI was applied to the B/E Aerospace building in a six week operation, improving the thermal efficiency substantially with the new visual appearance of the building much more in-keeping with the modern, high technology company that operates from these premises.

External Wall Insulation for Refurbishment www.netweber.co.uk

Before

Before

AfterAfter

After

16 17

System:weber.therm XM &weber.rend RB

Client:Church of Ireland

Contractor:Active Thermal Building Services

Architect:Active Thermal Building Service

Project: Damer Court, Upper Wellington Street, DublinProject: B/E Aerospace 7|5|SolutionThe homes at Damer Court owned by the Church of Ireland provide accommodation for those in need and runs 52 metres along Upper Wellington Street. Built in 1972 with narrow cavity brickwork and no insulation, Weber EWI has enhanced these homes both aesthetically and thermally with striking results achieved with the use of the versatile weber.rend RB system.

weber.rend RB produces a superb brick finish in just a fraction of the time and cost of full brickwork cladding. It is the combination of two coloured polymer modified mortars used

to create a brickwork pattern providing this classic red brick finish to harmonise the newly renovated building with adjacent properties.

The programme of renovations used 80mm thick EPS insulation board fixed to all external walls creating homes which are well above the required Part L Building Regulations.

The dramatic improvement in comfort levels and thermal efficiency is already evident when comparing heating bills to previous years and the external finish has proved to be a perfect fit for the locality.

System:weber.therm XM &weber.therm XB

Client:Walsall Housing Group

Contractor:Frank Haslam Milan

Architect:Gardner Stewart Architects

Applicator:Slimline Building Services Ltd

System: weber.therm XM

Client:Your Homes Newcastle, Bridging Newcastle Gateshead, New Dealfor Communities,Gentoo Homes

Contractor:Wates Living Space

Applicator:Astley Facades

Project: Brownhills RegenerationProject: Cruddas Park High Rise Regeneration Programme, Newcastle-upon-Tyne 8|6|

SolutionWhen 209 REEMA hollow cast concrete panel homes were transferred to the Walsall Housing Group after 50 years of neglect, the housing association faced a stark choice. Demolition or renovation.

weber.therm XM and weber.therm XB, the external wall insulation and cladding systems, were used throughout this substantial renovation programme and has achieved three key performance indicators. Dramatic thermal efficiency improvement, aesthetically attractive exterior renovation and on-time project completion.

SolutionFive tower blocks have undergone a full refurbishment both internally and externally. The use of BBA approved weber.therm XM External Wall Insulation system has created thermally efficient buildings with reduced energy costs and CO2 emissions. The existing U-value of 1.45 W/m²K has been improved to a comfortable 0.29 W/m²K whilst completely rejuvenating the exterior aesthetics. Residents now enjoy technically advanced homes that enhance the community landscape.

In harmony with improved glazing, doors and roof insulation, the weber.therm XM and weber.therm XB EWI system has more than doubled the SAP rating of these homes from a typical 1950’s level of just 41 to today, in advance of the Decent Homes Standard, a superior SAP rating of 88. Residents are reporting that their energy costs have been cut to a third of the previous expense of trying to heat these poorly insulated properties prior to renovation.

Following consultation, weber.therm XM external wall insulation system with two render finishes was specified. A polymer modified top coat render with an aggregate dry dash finish was selected as the main overall finish due to the excellent water shedding properties, with contrasting feature bands created by use of weber.plast TF, a synthetic finish available in over 250 colours. Mineral fibre was selected as the choice of insulation to achieve the specified U-value as it is non-combustible and also greatly reduces sound.

SolutionA 1970’s industrial office building in Northern Ireland has been dramatically transformed into a stylish and efficient 21st century office environment by the skilful application of weber.therm XM EWI system.

The original building followed construction methods of the period with a brickwork plinth up to window cill height and a blockwork structure with wall cladding up to the flat roof fascia.

System: weber.therm XM

Client: B/E Aerospace Inc

Contractor: Dunmore Construction

Applicator: M Clarke & Sons Contracts Limited

Before

Before

After

Limited insulation had been integrated and the building was difficult and expensive to heat in winter.

Nearly 400m² of weber.therm XM EWI was applied to the B/E Aerospace building in a six week operation, improving the thermal efficiency substantially with the new visual appearance of the building much more in-keeping with the modern, high technology company that operates from these premises.

External Wall Insulation for Refurbishment www.netweber.co.uk

Before

Before

AfterAfter

After

18 19

Concrete Repair & Protection

Products:weber.cem keycoat, weber.cem HB30, weber.cem HB40, weber.cem fairing coat, weber.cote smooth, weber.tec guard MCI

Project:Springfield Estate

Contractor:Breyer Group

Project: Springfield Estate, Stockwell, London1|FeaturesWeber concrete repair materials were extensively applied to social housing accommodation on the Springfield Estate in Stockwell, as part of an extensive regeneration scheme. Hundreds of post-war dwellings in several large four and five storey apartment blocks received an exterior make-over including repairs to parapet walls, re-pointing and repair to stacks, new roofs and substantial concrete repairs to overhead balcony soffits.

Multiple visual cracks to the balcony soffits identified the need for essential remedial work. Identified areas were ground out to expose the

steel reinforcing in the substrate, the areas were thoroughly prepared and the steel substrate maintained to BS 7079- A1.

Before the void was filled, an application of weber.cem keycoat was applied to the back of the cleaned reinforcing bars providing an essential bridging bond. weber.cem HB30 was used to fill the voids once the keycoat is tacky. The surfaces were then treated with weber.cote smooth anti-carbonation coating.

Reinforced concrete used in some non-traditional properties can be a highly durable structural material requiring little or no maintenance. However, it is now recognised that without correct design, mixing, placement and curing, the durability of reinforced concrete may be impaired.

As the causes of concrete decay are better understood the repair of concrete structures has become a growth area in the construction industry.

The weber.cem range of proven specialist mortars and protective coatings for repairs to concrete in building structures and civil engineering meet BS EN1504 standard and Weber can offer a comprehensive advisory service to assist surveyors, structural engineers and architects to work within the stringent regulations.

weber.cem Concrete Repair System

Products:weber.cem concrete repair system

Project:Trellick Tower

Contractor:Breyer Group

Specialist Contractor:Concrete Restoration

Project: Trellick Tower, Stockwell, London 2|FeaturesTrellick Tower is a 31 storey block of flats in West London, built in 1972 and now a Grade 2 listed building that pays homage to the high-rise housing philosophy of municipal architecture of the time. Designed in the Brutalist style by Erno Golfinger for the Greater London Council, the block contains 217 flats and is 322 ft (98 metres) tall. This spectacular concrete edifice stands today as a fine monument to Modernism’s revival having escaped a terrifying reputation during years of poor security and badly managed community living. Now a sought-after location with surprisingly spacious accommodation, Trellick Tower is structurally sound and has received some well-deserved TLC.

The weber.cem concrete repair system is now securing the exterior surfaces where localised water ingress had rusted the re-enforcing steels causing small patches to “blow” giving surface damage to the high-density pebble finish. The damage was cut out, steels treated or replaced and a new surface concrete applied to exactly match the colour and texture of the existing façade.

Products:weber.cem concrete repair system, weber.cem HB40 mortar, weber.cote smooth

Project:Wickford House

Contractor:Alfred Bagnall and Sons

Project: Wickford House, London3|

FeaturesThe balconies and communal walkways required concrete repairs due to carbonation leading to reinforcement corrosion and spalled concrete. Weber provided a full concrete repair specification to repair and further protect the reinforced concrete.

These balconies were repaired with a hand applied repair mortar and a protective anti-carbonation coating was applied to all exposed concrete surfaces.

External Wall Insulation for Refurbishment www.netweber.co.uk

18 19

Concrete Repair & Protection

Products:weber.cem keycoat, weber.cem HB30, weber.cem HB40, weber.cem fairing coat, weber.cote smooth, weber.tec guard MCI

Project:Springfield Estate

Contractor:Breyer Group

Project: Springfield Estate, Stockwell, London1|FeaturesWeber concrete repair materials were extensively applied to social housing accommodation on the Springfield Estate in Stockwell, as part of an extensive regeneration scheme. Hundreds of post-war dwellings in several large four and five storey apartment blocks received an exterior make-over including repairs to parapet walls, re-pointing and repair to stacks, new roofs and substantial concrete repairs to overhead balcony soffits.

Multiple visual cracks to the balcony soffits identified the need for essential remedial work. Identified areas were ground out to expose the

steel reinforcing in the substrate, the areas were thoroughly prepared and the steel substrate maintained to BS 7079- A1.

Before the void was filled, an application of weber.cem keycoat was applied to the back of the cleaned reinforcing bars providing an essential bridging bond. weber.cem HB30 was used to fill the voids once the keycoat is tacky. The surfaces were then treated with weber.cote smooth anti-carbonation coating.

Reinforced concrete used in some non-traditional properties can be a highly durable structural material requiring little or no maintenance. However, it is now recognised that without correct design, mixing, placement and curing, the durability of reinforced concrete may be impaired.

As the causes of concrete decay are better understood the repair of concrete structures has become a growth area in the construction industry.

The weber.cem range of proven specialist mortars and protective coatings for repairs to concrete in building structures and civil engineering meet BS EN1504 standard and Weber can offer a comprehensive advisory service to assist surveyors, structural engineers and architects to work within the stringent regulations.

weber.cem Concrete Repair System

Products:weber.cem concrete repair system

Project:Trellick Tower

Contractor:Breyer Group

Specialist Contractor:Concrete Restoration

Project: Trellick Tower, Stockwell, London 2|FeaturesTrellick Tower is a 31 storey block of flats in West London, built in 1972 and now a Grade 2 listed building that pays homage to the high-rise housing philosophy of municipal architecture of the time. Designed in the Brutalist style by Erno Golfinger for the Greater London Council, the block contains 217 flats and is 322 ft (98 metres) tall. This spectacular concrete edifice stands today as a fine monument to Modernism’s revival having escaped a terrifying reputation during years of poor security and badly managed community living. Now a sought-after location with surprisingly spacious accommodation, Trellick Tower is structurally sound and has received some well-deserved TLC.

The weber.cem concrete repair system is now securing the exterior surfaces where localised water ingress had rusted the re-enforcing steels causing small patches to “blow” giving surface damage to the high-density pebble finish. The damage was cut out, steels treated or replaced and a new surface concrete applied to exactly match the colour and texture of the existing façade.

Products:weber.cem concrete repair system, weber.cem HB40 mortar, weber.cote smooth

Project:Wickford House

Contractor:Alfred Bagnall and Sons

Project: Wickford House, London3|

FeaturesThe balconies and communal walkways required concrete repairs due to carbonation leading to reinforcement corrosion and spalled concrete. Weber provided a full concrete repair specification to repair and further protect the reinforced concrete.

These balconies were repaired with a hand applied repair mortar and a protective anti-carbonation coating was applied to all exposed concrete surfaces.

External Wall Insulation for Refurbishment www.netweber.co.uk

20 21

Ideal for renovation projects, Weber flooring systems can dramatically reduce the complexity and labour involved when removing original or problematic timber floors - the whole ground floor of a semi-detached or family property can be completed in less than two days.

Leca® Insulation Fill is a lightweight insulation and hardcore that cuts labour time by hours. It is available in 50 litre bags, making insulated foundations a simple, one man process. What is really clever about Leca® Insulation Fill in

Flooring Systemsbags is that it is stored in the bag, collected and transported in the bag, laid in the site in the bag and covered in concrete – still in the bag.

It will save hours of time, hard labour and cost when renovating old properties or creating foundations for extensions, conservatories, garages, driveways and patios. The 50 litre bags weigh just 15kg and are easily portable. There’s no mess, no need for heavy machinery, no heavy lifting and no waste.

Floors in homes in East Wythenshawe, managed by the Willow Park Housing Trust, one of the UK’s largest social housing organisations, have been replaced with Leca® Insulation Fill and weber.floor 4310 fibre flow pumped self-levelling floor screed. This simple solution has helped significantly reduce the time taken to complete refurbishment programmes.

System:Leca® Insulation Fillweber.floor 4310 fibre flow

Clients:Willow Park Housing Trust

Location:East Wythenshawe

System:Leca® Insulation Fill

Clients:Helena Partnerships

Location:Merseyside

Project: Willow Park Housing Trust

Project: Haydock, St Helens

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The renovation of the property in Haydock, St Helens – which was built in the 1930’s - had 80-year old timber floors and joists which were made of untreated timber and over time had rotted. There was a void below the floor over 1.5 metres deep. This had to be filled and capped with concrete to form the new, stable and damp proofed flooring to the property. The old timbers were cut away and removed and while previously back filling this space would take several people several days to haul and compact traditional hardcore and sand into place, by using Leca® Insulation Fill, the void in this property was filled in just one hour.

Technical Support

Weber pride themselves on offering a comprehensive technical and applications support to clients, specifiers and contractors, including:

• Full specification service, to NBS standards, providing advice on the appropriate system to use, including all necessary components and render finishes.

• U-value and condensation risk calculations to assess the thickness and type of insulation required and to give the assurance that the risk of interstitial condensation is eliminated.

• Site Application Guide, full documentation outlining all stages in the installation of the relevant weber.therm EWI system for use by installer, main contractors and clerk of works.

• On-site inspections – regular visits by qualified Weber staff at key stages in the installation process to ensure work is carried out to specification.

• CPD’s – one hour seminars can be provided on the various EWI systems available and the problems associated with solid wall housing. CPD’s also available for floorings and construction mortars.

• Samples and site references – samples of weber.therm systems are available on request and site references of completed schemes can be provided.

Weber Service & Technical Support

To ensure that work is carried out to the highest standard, Weber manage a list of contractors recommended for the installation of weber.therm EWI systems. The work of each contractor is inspected to ensure that it meets Weber’s criteria for system performance and finished appearance. Weber can provide clients with details of recommended

Weber provides a 10 year materials guarantee on all products. In addition, in conjunction with

the installer, a joint materials and workmanship guarantee could also be arranged. Trade association also manage guarantee schemes which

contractors nationwide for the application of weber.therm EWI systems.

Weber can also train contractor operatives in the installation of EWI components and the application of renders at its dedicated training centre in Flitwick.

may apply. weber.therm EWI systems hold BBA and NSAI certification, giving assurance that the systems will perform over the life of the project. Guarantee details and third party accreditation certificates are available on request.

Guarantees and Accreditation

Contractor Network Trade Associations

Weber is an active member of a number of specialist trade organisations related to external wall insulation, rendering and concrete repair.

certificate 09/4670

External Wall Insulation for Refurbishment www.netweber.co.uk

Download the new

Weber App

Scan below with

your smartphone

UK App IRE App

20 21

Ideal for renovation projects, Weber flooring systems can dramatically reduce the complexity and labour involved when removing original or problematic timber floors - the whole ground floor of a semi-detached or family property can be completed in less than two days.

Leca® Insulation Fill is a lightweight insulation and hardcore that cuts labour time by hours. It is available in 50 litre bags, making insulated foundations a simple, one man process. What is really clever about Leca® Insulation Fill in

Flooring Systemsbags is that it is stored in the bag, collected and transported in the bag, laid in the site in the bag and covered in concrete – still in the bag.

It will save hours of time, hard labour and cost when renovating old properties or creating foundations for extensions, conservatories, garages, driveways and patios. The 50 litre bags weigh just 15kg and are easily portable. There’s no mess, no need for heavy machinery, no heavy lifting and no waste.

Floors in homes in East Wythenshawe, managed by the Willow Park Housing Trust, one of the UK’s largest social housing organisations, have been replaced with Leca® Insulation Fill and weber.floor 4310 fibre flow pumped self-levelling floor screed. This simple solution has helped significantly reduce the time taken to complete refurbishment programmes.

System:Leca® Insulation Fillweber.floor 4310 fibre flow

Clients:Willow Park Housing Trust

Location:East Wythenshawe

System:Leca® Insulation Fill

Clients:Helena Partnerships

Location:Merseyside

Project: Willow Park Housing Trust

Project: Haydock, St Helens

1|

2|

The renovation of the property in Haydock, St Helens – which was built in the 1930’s - had 80-year old timber floors and joists which were made of untreated timber and over time had rotted. There was a void below the floor over 1.5 metres deep. This had to be filled and capped with concrete to form the new, stable and damp proofed flooring to the property. The old timbers were cut away and removed and while previously back filling this space would take several people several days to haul and compact traditional hardcore and sand into place, by using Leca® Insulation Fill, the void in this property was filled in just one hour.

Technical Support

Weber pride themselves on offering a comprehensive technical and applications support to clients, specifiers and contractors, including:

• Full specification service, to NBS standards, providing advice on the appropriate system to use, including all necessary components and render finishes.

• U-value and condensation risk calculations to assess the thickness and type of insulation required and to give the assurance that the risk of interstitial condensation is eliminated.

• Site Application Guide, full documentation outlining all stages in the installation of the relevant weber.therm EWI system for use by installer, main contractors and clerk of works.

• On-site inspections – regular visits by qualified Weber staff at key stages in the installation process to ensure work is carried out to specification.

• CPD’s – one hour seminars can be provided on the various EWI systems available and the problems associated with solid wall housing. CPD’s also available for floorings and construction mortars.

• Samples and site references – samples of weber.therm systems are available on request and site references of completed schemes can be provided.

Weber Service & Technical Support

To ensure that work is carried out to the highest standard, Weber manage a list of contractors recommended for the installation of weber.therm EWI systems. The work of each contractor is inspected to ensure that it meets Weber’s criteria for system performance and finished appearance. Weber can provide clients with details of recommended

Weber provides a 10 year materials guarantee on all products. In addition, in conjunction with

the installer, a joint materials and workmanship guarantee could also be arranged. Trade association also manage guarantee schemes which

contractors nationwide for the application of weber.therm EWI systems.

Weber can also train contractor operatives in the installation of EWI components and the application of renders at its dedicated training centre in Flitwick.

may apply. weber.therm EWI systems hold BBA and NSAI certification, giving assurance that the systems will perform over the life of the project. Guarantee details and third party accreditation certificates are available on request.

Guarantees and Accreditation

Contractor Network Trade Associations

Weber is an active member of a number of specialist trade organisations related to external wall insulation, rendering and concrete repair.

certificate 09/4670

External Wall Insulation for Refurbishment www.netweber.co.uk

Download the new

Weber App

Scan below with

your smartphone

UK App IRE App

External Wall Insulation for Refurbishment www.netweber.co.uk22 23

Weber is a specialist in the manufacture of industrial mortar products and its core product range consists of external renders, construction mortars, tile adhesives and floor screeds. Weber is an international business operating in over 46 countries worldwide.

Weber manufactures all of the renders used in its external wall insulation systems in the UK. Plants in three locations across the UK ensure that products are produced close to the markets they supply and that product quality is maintained throughout – essential to the overall performance of our systems.

Weber does not only sell products but the complete solution which includes the services that go with the products; technical support and training. Based on our strong knowledge and experience of the market, Weber training programmes meet the needs of our customers, providing specifiers, developers and contractors with substantial support before, during and after contract periods.

Another key competence of Weber is product innovation and this is clearly demonstrated in the development of systems such as weber.therm XP which is a unique one-coat render system, offering versatility, speed and simplicity to the specifier and installer.

Weber provides complete documentation and technical data on its full range of products in the Weber handbooks and pocket guides. Contact us for more information or view or request copies online at www.netweber.co.uk

About Weber

About Saint-GobainWeber is part of Saint-Gobain, one of the world’s leading industrial groups with activities in construction products, flat glass and packaging, high performance materials and building distribution.

Saint-Gobain is an international group employing around 193,000 people in over 64 countries worldwide. Established in France in 1665, Saint-Gobain is one of the world’s largest industrial groups, with 2012 sales of €43.1 billion.

Some of the UK and Ireland’s most respected companies and brands in the construction sector are part of Saint-Gobain, including British Gypsum, Saint-Gobain Glassolutions, Saint-Gobain Solar, Isover, PAM, Artex, Ecophon, Celotex and Pasquill, collectively employing 16,500 people operating from over 1,000 sites and contributing some £3 billion in sales annually. Together these businesses offer an unrivalled range of products and innovative material solutions that give architects and designers the ability to respond to the latest trends, whilst meeting the most exacting performance and legislative standards.

Saint-Gobain’s businesses form a robust, integrated supply chain partner that has the strength and flexibility to support the most diverse range of customer requirements. This adds up to a unique capability that can support everything from the biggest landmark projects, such as the Emirates Stadium and Fort Dunlop, to ongoing repair and maintenance programmes. As well as fast, efficient access to a comprehensive range of products, Saint-Gobain can provide specialist technical expertise and resources. From product specification and design, to fabrication and delivery to site or production line, Saint-Gobain are committed to working closely with their customers to help them get the most out of the extensive range of products and services.

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Loft and roof insulation Loft hatches

Internal wall insulation

Air tightness / Draught-proofing

Energy efficient glazing

Under floor insulation

Solar PV

Cavity wall insulation

Acoustic walls and ceilings

External wall insulation

External Renders

Construction Mortars

Tile Adhesives

Flooring Systems

External Wall Insulation for Refurbishment www.netweber.co.uk22 23

Weber is a specialist in the manufacture of industrial mortar products and its core product range consists of external renders, construction mortars, tile adhesives and floor screeds. Weber is an international business operating in over 46 countries worldwide.

Weber manufactures all of the renders used in its external wall insulation systems in the UK. Plants in three locations across the UK ensure that products are produced close to the markets they supply and that product quality is maintained throughout – essential to the overall performance of our systems.

Weber does not only sell products but the complete solution which includes the services that go with the products; technical support and training. Based on our strong knowledge and experience of the market, Weber training programmes meet the needs of our customers, providing specifiers, developers and contractors with substantial support before, during and after contract periods.

Another key competence of Weber is product innovation and this is clearly demonstrated in the development of systems such as weber.therm XP which is a unique one-coat render system, offering versatility, speed and simplicity to the specifier and installer.

Weber provides complete documentation and technical data on its full range of products in the Weber handbooks and pocket guides. Contact us for more information or view or request copies online at www.netweber.co.uk

About Weber

About Saint-GobainWeber is part of Saint-Gobain, one of the world’s leading industrial groups with activities in construction products, flat glass and packaging, high performance materials and building distribution.

Saint-Gobain is an international group employing around 193,000 people in over 64 countries worldwide. Established in France in 1665, Saint-Gobain is one of the world’s largest industrial groups, with 2012 sales of €43.1 billion.

Some of the UK and Ireland’s most respected companies and brands in the construction sector are part of Saint-Gobain, including British Gypsum, Saint-Gobain Glassolutions, Saint-Gobain Solar, Isover, PAM, Artex, Ecophon, Celotex and Pasquill, collectively employing 16,500 people operating from over 1,000 sites and contributing some £3 billion in sales annually. Together these businesses offer an unrivalled range of products and innovative material solutions that give architects and designers the ability to respond to the latest trends, whilst meeting the most exacting performance and legislative standards.

Saint-Gobain’s businesses form a robust, integrated supply chain partner that has the strength and flexibility to support the most diverse range of customer requirements. This adds up to a unique capability that can support everything from the biggest landmark projects, such as the Emirates Stadium and Fort Dunlop, to ongoing repair and maintenance programmes. As well as fast, efficient access to a comprehensive range of products, Saint-Gobain can provide specialist technical expertise and resources. From product specification and design, to fabrication and delivery to site or production line, Saint-Gobain are committed to working closely with their customers to help them get the most out of the extensive range of products and services.

1 6

7

8

9

10

2

3

4

5

Loft and roof insulation Loft hatches

Internal wall insulation

Air tightness / Draught-proofing

Energy efficient glazing

Under floor insulation

Solar PV

Cavity wall insulation

Acoustic walls and ceilings

External wall insulation

External Renders

Construction Mortars

Tile Adhesives

Flooring Systems

@SGweberIE@SGweberUK

IE Weber app

Use the QR code opposite to download the IE Weber app

UK Weber app

Use the QR code opposite to download the UK Weber app

Saint-Gobain Weber Ltd. Dickens House, Enterprise Way, Maulden Road, Flitwick, Bedford, MK45 5BY Telephone: +44 (0) 8703 330070 Fax: +44 (0) 1525 718 988 Email: mail@netweber.co.uk Website: www.netweber.co.uk

Saint-Gobain Weber Ltd. The Old Paper Mill, Ballyclare, Co Antrim, BT39 9EBTelephone: +44 (0) 2893 352999 Fax: +44 (0) 2893 323232 Email: mail@netweber.ie Website: www.weber.ie