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.

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100mm Celotex CW4000 Partial Fill Cavity Wall (6/pack)

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100mm Celotex CW4000 Partial Fill Cavity Wall (6/pack)A partial fill insulation solution for masonry cavity walls, 100mm Celotex CW4000 Partial Fill Cavity Wall (6/pack) is a rigid polyisocyanurate (PIR) insulation board with high thermal performance, suitable for use in new buildings and extensions. Sized to fit between cavity wall ties, it is lig..

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100mm Celotex GA4000 PIR insulation for floors-walls-roofs

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£33.32 EX
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£39.98 INC VAT

100mm Celotex GA4000 PIR insulation for floors-walls-roofs 100mm Celotex GA4000 PIR insulation for floors-walls-roofs is a general purpose insulation board for floors, walls and roofs. It has long been at the heart of the Celotex product range providing the user with a range of thermal insulation solutions. With low emissivity foil facings, GA..

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100mm Kay-Metzeler EPS70 Expanded Polystyrene (3/pack)

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£62.00 EX
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£74.40 INC VAT

Kay Metzeler EPS70 Expanded PolystyreneAn expanded polystyrene insulation board ideal for floor and wall insulation, Kay-Metzeler EPS70 provide a long lasting thermal solution. The polystyrene board is easy to cut to any shape making it ideal to fit to any space.Expanded Polystyrene (EPS) is proven in use over decades across the globe for const..

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100mm Kingspan Thermapitch TP10 pitched warm roof Insulation

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£52.68 EX
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£63.22 INC VAT

100mm Kingspan Thermapitch TP10 pitched warm roof Insulation100mm 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: 100mmSize: 2400x..

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100mm Kingspan Thermawall TW55 Board

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£62.48 EX
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£74.98 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: 100mm  -Available Thickness :  20mm,25mm,30,mm,40mm,50mm,60mm,&nb..

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100mm Polystyrene EPS white-3m2 / 6Sheets

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£26.00 EX
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£31.20 INC VAT

Polystyrene EPS Facade white External Premium (White) EPS Board is used for external wall insulation. It works well in conjunction with a finish of timber or plastic weatherboarding, tile hanging or any other cladding or reinforced-render systems. Thickness: 100mmLenght: 1000 mmWidth: 500 mmAvailable thicknesses: 10mm,20mm,30mm,50mm,80mm,100..

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100mm recticel eurothane GP PIR board

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£36.50 EX
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£43.80 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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100mm Recticel Eurowall Partial Fill Cavity Wall

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100mm Recticel Eurowall partial fill cavity wall100mm Recticel Eurowall partial fill cavity wall is a specialist high performance solution for cavity walls, with precision-cut straight edges to ensure gaps between boards are kept to a minimum. It has a low emissivity facing which delivers improved thermal resistance within the clear cavity. &n..

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100mm Soprema XPS SL Rigid Thermal Insulation Board ( pack/4 )

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100mm Soprema XPS SL Rigid Thermal Insulation Board100mm Soprema XPS SL Rigid Thermal Insulation Board is used in Floor Insulating applications and boasts a moisture absorption of around only 2% after long term use due to immersion, diffusion or freeze-thaw resistance. The benefits of the sheets are they can withstand heavy loads on top and are lig..

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100mm Thermafleece Cosywool Sheep Wool Flexi Slab 1200mmx390mm (Pack/21)

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100mm Thermafleece Cosywool Sheep wool Flexi Slab 1200mmx390mm (Pack/21)Thermafleece CosyWool – Sheep's Wool Flexible Slab100mm Thermafleece Cosywool Sheep wool Flexi Slab 1200mmx390mm (Pack/21) is a versatile insulation made from 75% British sheep's wool. and 25% recycled polyester  A great choice for insulating walls and roofs. Research show..

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100mm Thermafleece Cosywool Sheep Wool Flexi Slab 1200mmx590mm (Pack/14)

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100mm Thermafleece Cosywool Sheep wool Flexi Slab 1200mmx590mm (Pack/14)Thermafleece CosyWool – Sheep's Wool Flexible Slab100mm Thermafleece Cosywool Sheep wool Flexi Slab 1200mmx590mm (Pack/14) is a versatile insulation made from 75% British sheep's wool. and 25% recycled polyester  A great choice for insulating walls and roofs. Research show..

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100mm Thermafleece CosyWool Sheep Wool Roll (6.5mx370mm pack of 3)

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100mm Thermafleece CosyWool Sheep Wool Roll (6.5mx370mm pack of 3)  Rich in British sheep's wool - easy to install between and over joists, ideal for floors and lofts100mm Thermafleece CosyWool Sheep wool roll (6.5mx370mm pack of 3) is versatile insulation rich in British sheeps wool and is the ideal choice if you are looking for all roun..

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100mm Thermafleece CosyWool Sheep Wool Roll (6.5mx570mm pack of 2)

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100mm Thermafleece CosyWool Sheep Wool Roll (6.5mx570mm pack of 2)  Rich in British sheep's wool - easy to install between and over joists, ideal for floors and lofts100mm Thermafleece CosyWool Sheep wool roll (6.5mx570mm pack of 2) is versatile insulation rich in British sheeps wool and is the ideal choice if you are looking for all roun..

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100mm Xtratherm Thin-R PIR Insulation

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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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100mm Xtratherm Thin-R XT/CW Partial Fill Cavity Wall Insulation (Pack/4)

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100mm Xtratherm Thin-R XT/CW Partial Fill Cavity Wall Insulation (Pack/4)100mm Xtratherm Thin-R XT/CW Partial Fill Cavity Wall Insulation (Pack/4) (T&G) builds to a system thanks to it’s engineered tongue and grooved joints and pre-formed corners, ensuring insulation continuity and minimisation of thermal bridging.100mm Xtratherm Thin-R XT/CW P..

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