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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. 100mm Rockwool Sound Insulation Slab 1200mm x 400mm (2.88m²)
    100mm Rockwool Sound Insulation Slab 1200mm x 400mm (2.88m²)
    £41.50 Inc VAT
    £14.41 Per M²
  2. 100mm EcoTherm Eco-Versal Insulation Board 2400mm x 1200mm (8' x 4')
    100mm EcoTherm Eco-Versal Insulation Board 2400mm x 1200mm (8' x 4')
    £37.43 Inc VAT
    £13.00 Per M²
  3. 50mm EcoTherm Eco-Versal Insulation Board 2400mm x 1200mm (8' x 4') Quantity Discount
    50mm EcoTherm Eco-Versal Insulation Board 2400mm x 1200mm (8' x 4')
    £25.79 Inc VAT As low as £22.67 Inc VAT
    £8.95 Per M²
  4. 100mm Rockwool RWA45 1200mm x 600mm (2.88m²)
    100mm Rockwool RWA45 1200mm x 600mm (2.88m²)
    £28.79 Inc VAT
    £10.00 Per M²
  5. 25mm EcoTherm Eco-Versal Insulation Board 2400mm x 1200mm (8' x 4') Quantity Discount
    25mm EcoTherm Eco-Versal Insulation Board 2400mm x 1200mm (8' x 4')
    £16.43 Inc VAT As low as £14.99 Inc VAT
    £5.70 Per M²
  6. 150mm EcoTherm Eco-Versal Insulation Board 2400mm x 1200mm (8' x 4') Quantity Discount
    150mm EcoTherm Eco-Versal Insulation Board 2400mm x 1200mm (8' x 4')
    £64.55 Inc VAT As low as £57.83 Inc VAT
    £22.42 Per M²
  7. 100mm Rockwool Sound Insulation Slab 1200mm x 600mm (4.32m²)
    100mm Rockwool Sound Insulation Slab 1200mm x 600mm (4.32m²)
    £64.76 Inc VAT
    £14.99 Per M²
  8. Wraptite Jointing Tape 100mm x 50m
    Wraptite Jointing Tape 100mm x 50m
    £68.39 Inc VAT
    £1.37 Per M
  9. 120mm EcoTherm Eco-Versal Insulation Board 2400mm x 1200mm (8' x 4') Quantity Discount
    120mm EcoTherm Eco-Versal Insulation Board 2400mm x 1200mm (8' x 4')
    £51.59 Inc VAT As low as £46.67 Inc VAT
    £17.92 Per M²
  10. 90mm Kingspan Kooltherm K106 Cavity Board 1200mm x 450mm Pack of 4
    90mm Kingspan Kooltherm K106 Cavity Board 1200mm x 450mm Pack of 4
    £94.45 Inc VAT
    £43.73 Per M²
  11. 1200mm x 10m SuperFOIL SF19+ Multi Foil Insulation Quantity Discount
    1200mm x 10m SuperFOIL SF19+ Multi Foil Insulation
    £94.91 Inc VAT As low as £91.55 Inc VAT
    £7.91 Per M²
  12. 40mm EcoTherm Eco-Versal Insulation Board 2400mm x 1200mm (8' x 4') Quantity Discount
    40mm EcoTherm Eco-Versal Insulation Board 2400mm x 1200mm (8' x 4')
    £23.27 Inc VAT As low as £20.39 Inc VAT
    £8.08 Per M²
  13. 62.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm (8' x 4') Quantity Discount
    62.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm (8' x 4')
    £95.53 Inc VAT As low as £94.96 Inc VAT
    £33.17 Per M²
  14. 1500mm x 25m SuperFOIL SFTV Thermal, Vapour & Air Tightness Barrier
    1500mm x 25m SuperFOIL SFTV Thermal, Vapour & Air Tightness Barrier
    £56.34 Inc VAT
    £1.50 Per M²
  15. 1500mm x 10m SuperFOIL SF40 Multi Foil Insulation Quantity Discount
    1500mm x 10m SuperFOIL SF40 Multi Foil Insulation
    £209.99 Inc VAT As low as £196.19 Inc VAT
    £14.00 Per M²
  16. 100mm Rockwool Sound Insulation Slab 1200mm x 400mm Pallet of 25 (72m²) Bulk Buy Saving
    100mm Rockwool Sound Insulation Slab 1200mm x 400mm Pallet of 25 (72m²)
    £985.50 Inc VAT
    £13.69 Per M²
  17. 100mm Rockwool Flexi 1200mm x 400mm (2.88m²)
    100mm Rockwool Flexi 1200mm x 400mm (2.88m²)
    £46.76 Inc VAT
    £16.24 Per M²
  18. 42.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm (8' x 4') Quantity Discount
    42.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm (8' x 4')
    £82.75 Inc VAT As low as £79.26 Inc VAT
    £28.73 Per M²
  19. 62.5mm EcoTherm Eco-Liner Insulated Plasterboard 2400mm x 1200mm (8' x 4')
    62.5mm EcoTherm Eco-Liner Insulated Plasterboard 2400mm x 1200mm (8' x 4')
    £79.07 Inc VAT
    £27.46 Per M²
  20. 50mm Kingspan Kooltherm K108 Cavity Board 1200mm x 450mm Pack of 10 Quantity Discount
    50mm Kingspan Kooltherm K108 Cavity Board 1200mm x 450mm Pack of 10
    £127.91 Inc VAT As low as £126.67 Inc VAT
    £23.69 Per M²
  21. 100mm Rockwool Thermal Insulation Cavity Batt 1200mm x 455mm (3.28m²)
    100mm Rockwool Thermal Insulation Cavity Batt 1200mm x 455mm (3.28m²)
    £34.79 Inc VAT
    £10.61 Per M²
  22. 37.5mm EcoTherm Eco-Liner Insulated Plasterboard 2400mm x 1200mm (8' x 4')
    37.5mm EcoTherm Eco-Liner Insulated Plasterboard 2400mm x 1200mm (8' x 4')
    £58.07 Inc VAT
    £20.16 Per M²
  23. 75mm Rockwool RW3 1200mm x 600mm (4.32m²)
    75mm Rockwool RW3 1200mm x 600mm (4.32m²)
    £57.59 Inc VAT
    £13.33 Per M²
  24. 1200mm x 10m SuperFOIL SF19BB Breathable Multi Foil Insulation
    1200mm x 10m SuperFOIL SF19BB Breathable Multi Foil Insulation
    £100.19 Inc VAT
    £8.35 Per M²
  25. 30mm Rockwool RWA45 1200mm x 600mm (8.64m²)
    30mm Rockwool RWA45 1200mm x 600mm (8.64m²)
    £41.27 Inc VAT
    £4.78 Per M²
  26. 100mm Rockwool Sound Insulation Slab 1200mm x 600mm Pallet of 15 (64.8m²) Bulk Buy Saving
    100mm Rockwool Sound Insulation Slab 1200mm x 600mm Pallet of 15 (64.8m²)
    £933.30 Inc VAT
    £14.40 Per M²
  27. 75mm Rockwool RWA45 1200mm x 600mm (4.32m²)
    75mm Rockwool RWA45 1200mm x 600mm (4.32m²)
    £35.94 Inc VAT
    £8.32 Per M²
  28. 140mm Rockwool Flexi 1200mm x 400mm (1.92m²)
    140mm Rockwool Flexi 1200mm x 400mm (1.92m²)
    £44.94 Inc VAT
    £23.41 Per M²
  29. 100mm Therma-Pro Insulated Cavity Closer 2500mm Quantity Discount
    100mm Therma-Pro Insulated Cavity Closer 2500mm
    £10.79 Inc VAT As low as £10.19 Inc VAT
    £4.50 Per M
  30. 150mm Isover CWS 32 Cavity Wall Slab 1200mm x 455mm (2.18m²)
    150mm Isover CWS 32 Cavity Wall Slab 1200mm x 455mm (2.18m²)
    £44.17 Inc VAT
    £20.27 Per M²

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