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Internal Wall 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)
    £44.34 Inc VAT
    £15.40 Per M²
  2. 100mm Rockwool RWA45 1200mm x 600mm (2.88m²)
    100mm Rockwool RWA45 1200mm x 600mm (2.88m²)
    £30.12 Inc VAT
    £10.46 Per M²
  3. 1200mm x 10m SuperFoil SF19+ Multi Foil Insulation
    1200mm x 10m SuperFoil SF19+ Multi Foil Insulation
    £99.95 Inc VAT
    £8.33 Per M²
  4. 70mm Rockwool Sound Insulation Slab 1200mm x 600mm (5.76m²)
    70mm Rockwool Sound Insulation Slab 1200mm x 600mm (5.76m²)
    £69.11 Inc VAT
    £12.00 Per M²
  5. 1500mm x 10m SuperFoil SF40 Multi Foil Insulation
    1500mm x 10m SuperFoil SF40 Multi Foil Insulation
    £215.39 Inc VAT
    £14.36 Per M²
  6. 1500mm x 25m SuperFoil SFTV Thermal, Vapour & Air Tightness Barrier
    1500mm x 25m SuperFoil SFTV Thermal, Vapour & Air Tightness Barrier
    £54.95 Inc VAT
  7. 100mm Rockwool Sound Insulation Slab 1200mm x 600mm (4.32m²)
    100mm Rockwool Sound Insulation Slab 1200mm x 600mm (4.32m²)
    £69.11 Inc VAT
    £16.00 Per M²
  8. 100mm Rockwool Flexi 1200mm x 400mm (2.88m²)
    100mm Rockwool Flexi 1200mm x 400mm (2.88m²)
    £44.88 Inc VAT
    £15.59 Per M²
  9. 100mm Rockwool RW3 1200mm x 600mm (2.88m²)
    100mm Rockwool RW3 1200mm x 600mm (2.88m²)
    £48.91 Inc VAT
    £16.98 Per M²
  10. 75mm Rockwool RWA45 1200mm x 600mm (4.32m²)
    75mm Rockwool RWA45 1200mm x 600mm (4.32m²)
    £46.52 Inc VAT
    £10.76 Per M²
  11. 50mm Rockwool Sound Insulation Slab 1200mm x 600mm (8.64m²)
    50mm Rockwool Sound Insulation Slab 1200mm x 600mm (8.64m²)
    £69.11 Inc VAT
    £8.00 Per M²
  12. 50mm Rockwool RWA45 1200mm x 600mm (6.48m²)
    50mm Rockwool RWA45 1200mm x 600mm (6.48m²)
    £44.63 Inc VAT
    £6.89 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')
    £92.75 Inc VAT As low as £92.20 Inc VAT
    £32.21 Per M²
  14. 37.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm (8' x 4') Quantity Discount
    37.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm (8' x 4')
    £75.54 Inc VAT As low as £74.47 Inc VAT
    £26.23 Per M²
  15. 50mm Rockwool RW3 1200mm x 600mm (5.76m²)
    50mm Rockwool RW3 1200mm x 600mm (5.76m²)
    £49.67 Inc VAT
    £8.63 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)
    £1,043.94 Inc VAT
    £14.50 Per M²
  17. 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')
    £65.20 Inc VAT
  18. 57.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm (8' x 4') Quantity Discount
    57.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm (8' x 4')
    £91.14 Inc VAT As low as £89.39 Inc VAT
    £31.64 Per M²
  19. 140mm Rockwool Flexi 1200mm x 400mm (1.92m²)
    140mm Rockwool Flexi 1200mm x 400mm (1.92m²)
    £43.13 Inc VAT
    £22.46 Per M²
  20. 50mm Knauf OmniFit Slab 35 400mm x 1200mm (5.76m²)
    50mm Knauf OmniFit Slab 35 400mm x 1200mm (5.76m²)
    £37.07 Inc VAT
    £6.43 Per M²
  21. 40mm Rockwool RWA45 1200mm x 600mm (8.64m²)
    40mm Rockwool RWA45 1200mm x 600mm (8.64m²)
    £51.67 Inc VAT
    £5.98 Per M²
  22. 52.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm (8' x 4') Quantity Discount
    52.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm (8' x 4')
    £81.95 Inc VAT As low as £81.71 Inc VAT
    £28.45 Per M²
  23. 1500mm x 8m SuperFoil SF60FR Multi Foil Insulation
    1500mm x 8m SuperFoil SF60FR Multi Foil Insulation
    £248.99 Inc VAT
    £20.75 Per M²
  24. 30mm Rockwool RW3 1200mm x 600mm (10.8m²)
    30mm Rockwool RW3 1200mm x 600mm (10.8m²)
    £65.51 Inc VAT
    £6.06 Per M²
  25. 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')
    £47.90 Inc VAT
  26. 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')
    £80.34 Inc VAT As low as £76.96 Inc VAT
    £27.90 Per M²
  27. 1200mm x 10m SuperFoil SF19BB Breathable Multi Foil Insulation
    1200mm x 10m SuperFoil SF19BB Breathable Multi Foil Insulation
    £109.50 Inc VAT
    £9.12 Per M²
  28. 50mm Rockwool Flexi 1200mm x 400mm (5.76m²)
    50mm Rockwool Flexi 1200mm x 400mm (5.76m²)
    £46.52 Inc VAT
    £8.08 Per M²
  29. 90mm Rockwool Flexi 1200mm x 600mm (4.32m²)
    90mm Rockwool Flexi 1200mm x 600mm (4.32m²)
    £59.59 Inc VAT
    £13.80 Per M²
  30. 82.5mm Ecotherm Eco Liner Insulated Plasterboard 2400mm x 1200mm (8' x 4')
    82.5mm Ecotherm Eco Liner Insulated Plasterboard 2400mm x 1200mm (8' x 4')
    £82.75 Inc VAT

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