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Wall Insulation

Shop wall insulation materials for new builds, extensions, refurbishment projects and commercial construction. Our range includes PIR insulation boards, insulated plasterboard, mineral wool slabs, cavity wall insulation and external wall insulation systems from leading manufacturers.

Shop Wall Insulation by Application

  1. Internal wall insulation: Improve the thermal performance of existing walls using suitable insulation boards or insulated plasterboard systems.
  2. External wall insulation: Explore insulation boards and system components designed for compatible external wall insulation and render systems.
  3. Cavity wall insulation: Find insulation products for suitable full-fill and partial-fill masonry cavity wall constructions.
  4. Timber and steel frame insulation: Browse insulation boards, slabs and rolls designed for compatible framed wall systems.
  5. Partition wall insulation: Choose suitable insulation products for thermal and acoustic performance in internal partitions.

Choose the Right Wall Insulation

The best wall insulation depends on the wall construction, available installation space, required thermal performance and project specification. PIR boards offer high thermal resistance for their thickness, while mineral wool products can provide thermal and acoustic insulation. Insulated plasterboard combines insulation with a plasterboard lining, helping simplify certain internal drylining applications.

Before choosing a product, check the manufacturer's technical datasheet, required thickness, fire performance and compatibility with the proposed wall system.

Browse our wall insulation range to compare products, specifications and pack coverage. Trade customers can contact our team for help with product selection and quantity quotations.

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£ 4.21
£ 2044.97
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1129 products
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Sopratherm GA4070 70mm PIR Board
(PIR) insulation boardPack Length: 2400mmPack Width: 1200mmPack coverage: 2.88m2Thickness: 70mmQuantity: 1 Sheet
£ 45.80 Inc VAT (£38.17 ex VAT)
Sopratherm GA4060 60mm PIR Insulation Board
(PIR) insulation boardPack Length: 2400mmPack Width: 1200mmPack coverage: 2.88m2Thickness: 60mmQuantity: 1 Sheet
£ 40.93 Inc VAT (£34.11 ex VAT)
Sopratherm GA4050 50mm PIR Insulation Board
(PIR) insulation boardPack Length: 2400mmPack Width: 1200mmPack coverage: 2.88m2Thickness: 50mmQuantity: 1 Sheet
£ 35.77 Inc VAT (£29.81 ex VAT)
Sopratherm TB4035 35mm PIR Insulation Board
(PIR) insulation boardPack Length: 2400mmPack Width: 1200mmPack coverage: 2.88m2Thickness: 35mmQuantity: 1 Sheet
Last known price:£32.09 Inc VAT (£26.74 ex VAT)
Sopratherm TB4040 40mm PIR Insulation Board
(PIR) insulation boardPack Length: 2400mmPack Width: 1200mmPack coverage: 2.88m2Thickness: 40mmQuantity: 1 Sheet
£ 33.80 Inc VAT (£28.17 ex VAT)
Sopratherm TB4030 PIR Insulation Board 30mm
(PIR) insulation boardPack Length: 2400mmPack Width: 1200mmPack coverage: 2.88m2Thickness: 30mmQuantity: 1 Sheet
£ 26.08 Inc VAT (£21.73 ex VAT)
Sopratherm TB4025 25mm PIR Insulation Board
(PIR) insulation boardPack Length: 2400mmPack Width: 1200mmPack coverage: 2.88m2Thickness: 25mmQuantity: 1 Sheet
£ 26.82 Inc VAT (£22.35 ex VAT)
SOPRATHERM PL4025 37.5mm PIR Insulated Plasterboard
PIR Insulated PlasterboardPack Length: 2400mmPack Width: 1200mmPack coverage: 2.88m2Thickness: 37.5mmQuantity: 1 Sheet
£ 64.36 Inc VAT (£53.63 ex VAT)
Sopratherm TB4020 20mm PIR Insulation Board
(PIR) insulation boardPack Length: 2400mmPack Width: 1200mmPack coverage: 2.88m2Thickness: 20mmQuantity: 1 Sheet
£ 28.40 Inc VAT (£23.67 ex VAT)
ThermaFleece UltraWool 90mm Flexible Slab
British Sheep Wool InsulationPack Length: 14400mmPack Width: 7080mmPack coverage: 8.50m2Thickness: 90mmQuantity: 12Width: 590mm
Last known price:£127.58 Inc VAT (£106.32 ex VAT)
ThermaFleece UltraWool 70mm Flexible Slab
British Sheep Wool InsulationPack Length: 16800mmPack Width: 8260mmPack coverage: 9.91m2Thickness: 70mmQuantity: 14Width: 590mm
Last known price:£127.58 Inc VAT (£106.32 ex VAT)
Thermafleece UltraWool 90mm Flexible Slab
British Sheep Wool InsulationPack Length: 21600mmPack Width: 7020mmPack coverage: 8.42m2Thickness: 90mmWidth: 390mm
Last known price:£156.94 Inc VAT (£130.78 ex VAT)
ThermaFleece UltraWool 70mm Flexible Slab
British Sheep Wool InsulationPack Length: 25200mmPack Width: 8190mmPack coverage: 9.83m2Thickness: 70mmWidth: 390mm
Last known price:£156.94 Inc VAT (£130.78 ex VAT)
ThermaFleece CosyWool 140mm Flexible Slab
British Sheep Wool InsulationPack Length: 6000mmPack Width: 2850mmPack coverage: 3.42m2Thickness: 140mmQuantity: 5 SheetsWidth: 570mm
Last known price:£50.41 Inc VAT (£42.01 ex VAT)
ThermaFleece CosyWool 100mm Slab 570mm
British Sheep Wool InsulationPack Length: 8400mmPack Width: 3990mmPack coverage: 4.79m2Thickness: 100mmQuantity: 7 SheetsWidth: 570mm
Last known price:£50.41 Inc VAT (£42.01 ex VAT)
ThermaFleece CosyWool 75mm Slab 570mm
British Sheep Wool InsulationPack Length: 10800mmPack Width: 5130mmPack coverage: 6.16m2Thickness: 75mmQuantity: 9 SheetsWidth: 570mm
Last known price:£50.41 Inc VAT (£42.01 ex VAT)
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