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Wall Insulation

Wall Insulation

 

Introduction

Masonry cavity walls comprise of an outer skin of brick or blockwork, and an inner skin of masonry. In new buildings, the inner skin is usually blockwork. Between the two masonry leafs is an air cavity, into which thermal insulation is installed to meet building performance targets. A partial fill cavity features rigid insulation boards secured to the inner leaf masonry, leaving an air cavity behind the outer leaf.

Partial fill external walls can contribute to a whole-building solution that meets the energy efficiency target for new-build construction. They are particularly well suited to extensions of existing buildings, where the U-value targets tend to be less onerous

 

High performance, partial fill insulation offers the following benefits:

  1. Easy to fit between wall ties using cavity tie clips for retention.
  2. Reliable long-term energy savings for buildings.
  3. Low emissivity foil facers improve thermal performance of air cavity.
  4. Excellent dimensional stability.

What products are suitable as partial fill cavity insulation?

Offered specifically for partial fill cavity wall applications, Celotex CW4000 is sized specifically to fit standard wall tie spacing requirements. No cutting is required, so it can be installed quickly and easily as the brick and blockwork courses progress.


WHY IS PARTIAL FILL CAVITY CONSTRUCTION SO COMMON ?

Using rigid insulation boards in conjunction with a minimum 50mm air cavity is a tried and tested solution familiar to designers, specifiers, contractors and building inspectors alike. It is a popular method for constructing external walls in the UK, and has been used on building sites for the last hundred years.

The clear cavity between the outer leaf and the insulation acts as a barrier to external moisture, stopping it from reaching the inside of the building. Most commonly, the outer skin of the cavity wall is constructed from brick. Blockwork is also used, clad or rendered to provide the desired finish.

Wall Insulation

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12.5mm Siniat Weather Defence External Sheathing Board

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12.5mm Siniat Weather Defence External Sheathing BoardSiniat Weather Defence is a revolutionary new external sheathing board, faced with water repellent material for superior weather protection. Strong, highly moisture resistant and A1 non combustible. Weather Defence is a faster way to a weather tight building compared to traditional sheathing boa..

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120mm Cellecta Hexatherm XR Roughened Render Insulation Board ( Pack-4)

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12.7mm Promat Monolux 500 Fire Protection Rigid Insulation BoardStructural calcium silicatesMONOLUX materials are rigid insulation boards with a low thermal conductivity. They are specifically formulated without asbestos and mineral fibres.MONOLUX products have low shrinkage and high strength and therefore provide effective and stable insulation so..

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120mm Grey Polystyrene (EPS) for External Wall Insulation

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120mm Grey Polystyrene (EPS) for External Wall InsulationStyropoz Graphite EPS for External Wall Insulation or grey polystyrene (graphite eps) for external wall insulation which can be used on all kinds of base surfaces and these are ideal for both new and old buildings, blocks of flats and non-residenti..

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120mm Kingspan Kooltherm K12 Framing Board ( Pack-2 )

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£227.45 EX
VAT
£272.94 INC VAT

120mm Grey Polystyrene (EPS) for External Wall InsulationStyropoz Graphite EPS for External Wall Insulation or grey polystyrene (graphite eps) for external wall insulation which can be used on all kinds of base surfaces and these are ideal for both new and old buildings, blocks of flats and non-residenti..

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120mm Kingspan Kooltherm K7 Pitched Roof Board (2-pack)

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120mm Grey Polystyrene (EPS) for External Wall InsulationStyropoz Graphite EPS for External Wall Insulation or grey polystyrene (graphite eps) for external wall insulation which can be used on all kinds of base surfaces and these are ideal for both new and old buildings, blocks of flats and non-residenti..

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120mm Kingspan Thermapitch TP10 pitched warm roof Insulation

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£95.85 EX
VAT
£115.02 INC VAT

20mm British Gypsum Glasroc F FirecaseNon-combustible glass-reinforced gypsum plasterboard giving up to 120 minutes fire protection.Glasroc F FireCase is a high performance, Class A1 and Class 0, non-combustible glass reinforced gypsum board, used predominately as part of the FireCase frameless structural steel encasement system, giving up to 120 m..

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120mm Kingspan Thermawall TW55 Board

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£70.58 EX
VAT
£84.70 INC VAT

Kingspan Thermawall TW55Kingspan Thermawall TW55 is a high performance insulation with a fibre-free rigid thermoset polyisocyanurate (PIR) core.It is used to insulate timber and steel framing systems, and has a thermal conductivity of 0.022 W/m·K.   -Thickness: 120mm  -Available Thickness :  20mm,25mm,30,mm,40mm,50mm,60mm,&nb..

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120mm recticel eurothane GP PIR board

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£51.25 EX
VAT
£61.50 INC VAT

Recticel Eurothane GP PIR BoardEurothane® GP is a high performance PIR insulation board that is light weight, easy to cut, handle and install. Whether it’s a pitched roof, framed wall or floor, Eurothane® GP is the ideal solution amongst contractors and installer.Eurothane GP will not degrade or deteriorate due to moisture and therefore m..

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120mm Rockwool Rainscreen Duo Slab For Walls (25.92m2 Pallet)

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120mm Recticel Powerdeck U PIR Insulation Board For Flat Roof - pack/4Easy to install flat roof insulation board suitable for torch-on felt.120mm Recticel Powerdeck U PIR Insulation Board For Flat Roof - pack/4 is a high performance rigid PIR insulation board for use in warm flat roofs with bituminous torch-on felt waterproofing systems. Its o..

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120mm Styrodur 3000 CS Extruded Polystyrene Board ( Pack of 4 )

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120mm Recticel Powerdeck U PIR Insulation Board For Flat Roof - pack/4Easy to install flat roof insulation board suitable for torch-on felt.120mm Recticel Powerdeck U PIR Insulation Board For Flat Roof - pack/4 is a high performance rigid PIR insulation board for use in warm flat roofs with bituminous torch-on felt waterproofing systems. Its o..

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120mm URSA Hometec 40 Cladding Insulation Roll

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120mm URSA Hometec 40 Cladding Insulation RollPitched roofs, External walls, Twin skin metal cladding120mm URSA HOMETEC Cladding Rolls are lightweight, unfaced glass wool rolls for use in twin skin metal cladding systems.Product DetailsThickness: 60mm, 80mm, 100mm, 120mm, 140mm, 160mm, 170mm, 180mm, 200mm, 220mm, 240mm, 260mm, 280mm, 300m..

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120mm Xtratherm Thin-R PIR Insulation

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£53.39 EX
VAT
£64.07 INC VAT

Xtratherm Thin-R XT/PR  Xtratherm Thin-R range is a high performance foil faced Polyisocyanurate (PIR) insulation with a certified thermal conductivity as Low as 0.022 W/mK. Thin-R Pitched Roof XT/PR on sloped roofs (ventilated, hybrid or warm) provides the most efficient U-Values with minimal intrusion into valuable living space. The roof co..

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125mm EcoTherm Eco-Versal PIR Universal Board

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120mm Recticel Powerdeck U PIR Insulation Board For Flat Roof - pack/4Easy to install flat roof insulation board suitable for torch-on felt.120mm Recticel Powerdeck U PIR Insulation Board For Flat Roof - pack/4 is a high performance rigid PIR insulation board for use in warm flat roofs with bituminous torch-on felt waterproofing systems. Its o..

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125mm Kingspan Thermapitch TP10 pitched warm roof Insulation

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£101.41 EX
VAT
£121.69 INC VAT

25mm Kingspan Thermapitch TP10 pitched warm roof Insulation25mm Kingspan Thermapitch TP10 pitched warm roof Insulation is a high performance insulation with a fibre-free rigid thermoset polyisocyanurate (PIR) core.It is suitable for tiled or slated pitched warm roof spaces, and has a thermal conductivity of 0.022 W/m·K.Thickness: 25mmSize: 2400x120..

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125mm Kingspan Thermawall TW55 Board

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Kingspan Thermawall TW55Kingspan Thermawall TW55 is a high performance insulation with a fibre-free rigid thermoset polyisocyanurate (PIR) core.It is used to insulate timber and steel framing systems, and has a thermal conductivity of 0.022 W/m·K.   -Thickness: 125mm  -Available Thickness :  20mm,25mm,30,mm,40mm,50mm,60mm,&nb..

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