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Wall Insulation

We offer a high-quality collection of wall insulation for cavity walls, stud walls, and external walls, all from leading brands like Kingspan and Rockwool. Wall insulation is highly economical and excellent in retaining heat, controlling sound transfer, and even achieving protection against fire. Choose from various forms of wall insulation, including rolls, slabs, and cavity closers across our range at Builder Depot. For quick-dry lining applications, try our Ecotherm and Kingspan plasterboard wall insulation today!

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  1. 60mm Kingspan Kooltherm K108 Cavity Board 1200mm x 450mm Pack of 8 Quantity Discount
    60mm Kingspan Kooltherm K108 Cavity Board 1200mm x 450mm Pack of 8
    £123.34 Inc VAT As low as £122.30 Inc VAT
    £28.55 Per M²
  2. 100mm Isover APR 1200 2/600mm x 9170mm Acoustic Partition Roll (11m²)
    100mm Isover APR 1200 2/600mm x 9170mm Acoustic Partition Roll (11m²)
    £49.99 Inc VAT
    £5.45 Per M²
  3. 25mm Isover APR 1200 2/600mm x 20m Acoustic Partition Roll (24m²) Quantity Discount
    25mm Isover APR 1200 2/600mm x 20m Acoustic Partition Roll (24m²)
    £53.80 Inc VAT As low as £48.10 Inc VAT
    £2.24 Per M²
  4. 50mm Isover APR 1200 2/600mm x 13m Acoustic Partition Roll (15.6m²) Quantity Discount
    50mm Isover APR 1200 2/600mm x 13m Acoustic Partition Roll (15.6m²)
    £51.95 Inc VAT As low as £49.36 Inc VAT
    £3.34 Per M²
  5. 75mm Isover APR 1200 2/600mm x 12.2m Acoustic Partition Roll (14.64m²) Quantity Discount
    75mm Isover APR 1200 2/600mm x 12.2m Acoustic Partition Roll (14.64m²)
    £74.05 Inc VAT As low as £67.08 Inc VAT
    £5.06 Per M²
  6. 50mm Isover CWS 36 Cavity Wall Slab 1200mm x 455mm (10.92m²)
    50mm Isover CWS 36 Cavity Wall Slab 1200mm x 455mm (10.92m²)
    £44.34 Inc VAT
    £4.06 Per M²
  7. 100mm Isover CWS 36 Cavity Wall Slab 1200mm x 455mm (6.55m²) Quantity Discount
    100mm Isover CWS 36 Cavity Wall Slab 1200mm x 455mm (6.55m²)
    £53.80 Inc VAT As low as £46.82 Inc VAT
    £8.21 Per M²
  8. 750mm x 50m x 3mm SuperFOIL SFBA MP Double Foil Single Bubble Insulation
    750mm x 50m x 3mm SuperFOIL SFBA MP Double Foil Single Bubble Insulation
    £91.20 Inc VAT
    £2.44 Per M²
  9. 1000mm x 7m x 3mm SuperFOIL Multi Purpose Wrap
    1000mm x 7m x 3mm SuperFOIL Multi Purpose Wrap
    £26.34 Inc VAT
    £3.77 Per M²
  10. 600mm x 5m x 3mm SuperFOIL RadPack Radiator Foil Insulation
    600mm x 5m x 3mm SuperFOIL RadPack Radiator Foil Insulation
    £25.14 Inc VAT
    £8.38 Per M²
  11. 600mm x 10m x 3mm SuperFOIL Garage Door Kit
    600mm x 10m x 3mm SuperFOIL Garage Door Kit
    £39.95 Inc VAT
    £6.66 Per M²
  12. 1000mm x 7m SuperFOIL Shed Insulation Kit
    1000mm x 7m SuperFOIL Shed Insulation Kit
    £95.99 Inc VAT
    £4.57 Per M²
  13. 80mm x 7.5m SuperFOIL SFBA Pipe Wrap Foil Insulation
    80mm x 7.5m SuperFOIL SFBA Pipe Wrap Foil Insulation
    £7.79 Inc VAT
    £1.30 Per M²
  14. 1500mm x 25m SuperFOIL SFBB Breathable Membrane
    1500mm x 25m SuperFOIL SFBB Breathable Membrane
    £66.59 Inc VAT
    £1.78 Per M²
  15. 1200mm x 25m x 6mm SuperFoil SFBA 2/2 Double Bubble Foil Insulation
    1200mm x 25m x 6mm SuperFoil SFBA 2/2 Double Bubble Foil Insulation
    £134.40 Inc VAT
    £4.48 Per M²
  16. 1500mm x 25m x 3mm SuperFOIL SFBA MP Double Foil Single Bubble Insulation
    1500mm x 25m x 3mm SuperFOIL SFBA MP Double Foil Single Bubble Insulation
    £91.20 Inc VAT
    £2.44 Per M²
  17. 1350mm x 50m x 4mm SuperFOIL SFBA BB Insulating Breathable Membrane
    1350mm x 50m x 4mm SuperFOIL SFBA BB Insulating Breathable Membrane
    £158.63 Inc VAT
    £2.35 Per M²
  18. 150mm Therma-Pro Insulated Cavity Closer 2500mm Quantity Discount
    150mm Therma-Pro Insulated Cavity Closer 2500mm
    £13.67 Inc VAT As low as £11.94 Inc VAT
    £5.47 Per M
  19. 1200mm x 8.35m SuperFOIL SFNC Non Combustible Multi Layer Foil Insulation
    1200mm x 8.35m SuperFOIL SFNC Non Combustible Multi Layer Foil Insulation
    £318.00 Inc VAT
    £31.80 Per M²
  20. 1500mm x 50m SuperFOIL SFTV Thermal, Vapour & Air Tightness Barrier
    1500mm x 50m SuperFOIL SFTV Thermal, Vapour & Air Tightness Barrier
    £114.95 Inc VAT
    £1.54 Per M²
  21. 1000mm x 25m SuperFoil SFTV FR Reflective Vapour Control Membrane
    1000mm x 25m SuperFoil SFTV FR Reflective Vapour Control Membrane
    £41.34 Inc VAT
    £1.10 Per M²
  22. 1000mm x 50m SuperFoil SFTV FR Reflective Vapour Control Membrane
    1000mm x 50m SuperFoil SFTV FR Reflective Vapour Control Membrane
    £75.95 Inc VAT
    £1.52 Per M²
  23. 1200mm x 20m SuperFOIL SFTV 1L Reflective Vapour Control Membrane
    1200mm x 20m SuperFOIL SFTV 1L Reflective Vapour Control Membrane
    £38.87 Inc VAT
    £1.62 Per M²
  24. 1200mm x 10m x 30mm SuperFOIL SF6 Multi Layer Foil Insulation
    1200mm x 10m x 30mm SuperFOIL SF6 Multi Layer Foil Insulation
    £71.99 Inc VAT
    £6.00 Per M²
  25. 90mm Ecotherm Eco-Cavity Full Fill Insulation 1200mm x 450mm (4’ x 1.5’) Pack of 4 (2.16m²)
    90mm Ecotherm Eco-Cavity Full Fill Insulation 1200mm x 450mm (4’ x 1.5’) Pack of 4 (2.16m²)
    £57.95 Inc VAT
    £26.83 Per M²
  26. 50mm Rockwool Ablative Coated Batt 1200mm x 600mm
    50mm Rockwool Ablative Coated Batt 1200mm x 600mm
    £20.83 Inc VAT
    £28.93 Per M²
  27. 1500mm x 8m SuperFOIL SF60 Multi Foil Insulation Quantity Discount
    1500mm x 8m SuperFOIL SF60 Multi Foil Insulation
    £243.60 Inc VAT As low as £231.60 Inc VAT
    £20.30 Per M²
  28. 50mm Rockwool Sound Insulation Slab 1200mm x 600mm (8.64m²)
    50mm Rockwool Sound Insulation Slab 1200mm x 600mm (8.64m²)
    £64.76 Inc VAT
    £7.50 Per M²
    Out of stock
  29. 70mm EcoTherm Eco-Versal Insulation Board 2400mm x 1200mm (8' x 4') Quantity Discount
    70mm EcoTherm Eco-Versal Insulation Board 2400mm x 1200mm (8' x 4')
    £33.95 Inc VAT As low as £30.23 Inc VAT
    £11.78 Per M²
  30. 100mm Rockwool RW3 1200mm x 600mm (2.88m²)
    100mm Rockwool RW3 1200mm x 600mm (2.88m²)
    £50.39 Inc VAT
    £17.50 Per M²
    Out of stock

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