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Fire Insulation 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. 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
  4. 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
  5. 100mm Rockwool Flexi 1200mm x 400mm (2.88m²)
    100mm Rockwool Flexi 1200mm x 400mm (2.88m²)
    £44.88 Inc VAT
    £15.59 Per M²
  6. 100mm Rockwool RW3 1200mm x 600mm (2.88m²)
    100mm Rockwool RW3 1200mm x 600mm (2.88m²)
    £48.91 Inc VAT
    £16.98 Per M²
  7. 75mm Rockwool RWA45 1200mm x 600mm (4.32m²)
    75mm Rockwool RWA45 1200mm x 600mm (4.32m²)
    £46.52 Inc VAT
    £10.76 Per M²
  8. 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
  9. 50mm Rockwool RWA45 1200mm x 600mm (6.48m²)
    50mm Rockwool RWA45 1200mm x 600mm (6.48m²)
    £44.63 Inc VAT
    £6.89 Per M²
  10. 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
  11. 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
  12. 50mm Rockwool RW3 1200mm x 600mm (5.76m²)
    50mm Rockwool RW3 1200mm x 600mm (5.76m²)
    £49.67 Inc VAT
    £8.63 Per M²
  13. 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
  14. 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
  15. 140mm Rockwool Flexi 1200mm x 400mm (1.92m²)
    140mm Rockwool Flexi 1200mm x 400mm (1.92m²)
    £43.13 Inc VAT
    £22.46 Per M²
  16. 40mm Rockwool RWA45 1200mm x 600mm (8.64m²)
    40mm Rockwool RWA45 1200mm x 600mm (8.64m²)
    £51.67 Inc VAT
    £5.98 Per M²
  17. 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
  18. 30mm Rockwool RW3 1200mm x 600mm (10.8m²)
    30mm Rockwool RW3 1200mm x 600mm (10.8m²)
    £65.51 Inc VAT
    £6.06 Per M²
  19. 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
  20. 50mm Rockwool Flexi 1200mm x 400mm (5.76m²)
    50mm Rockwool Flexi 1200mm x 400mm (5.76m²)
    £46.52 Inc VAT
    £8.08 Per M²
  21. 90mm Rockwool Flexi 1200mm x 600mm (4.32m²)
    90mm Rockwool Flexi 1200mm x 600mm (4.32m²)
    £59.59 Inc VAT
    £13.80 Per M²
  22. 140mm Rockwool Flexi 1200mm x 600mm (2.88m²)
    140mm Rockwool Flexi 1200mm x 600mm (2.88m²)
    £62.74 Inc VAT
    £21.78 Per M²
  23. 75mm Rockwool RW3 1200mm x 600mm (4.32m²)
    75mm Rockwool RW3 1200mm x 600mm (4.32m²)
    £55.27 Inc VAT
    £12.79 Per M²
  24. 40mm Rockwool RW3 1200mm x 600mm (7.2m²)
    40mm Rockwool RW3 1200mm x 600mm (7.2m²)
    £56.95 Inc VAT
    £7.91 Per M²
  25. 30mm Rockwool RWA45 1200mm x 600mm (8.64m²)
    30mm Rockwool RWA45 1200mm x 600mm (8.64m²)
    £39.60 Inc VAT
    £4.58 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)
    £971.10 Inc VAT
    £14.99 Per M²
  27. 70mm Rockwool Flexi 1200mm x 600mm (5.76m²)
    70mm Rockwool Flexi 1200mm x 600mm (5.76m²)
    £69.02 Inc VAT
    £11.99 Per M²
  28. 100mm Rockwool Flexi 1200mm x 600mm (4.32m²)
    100mm Rockwool Flexi 1200mm x 600mm (4.32m²)
    £67.27 Inc VAT
    £15.58 Per M²
  29. 100mm Rockwool Fire Barrier Slab Foil Faced 1000mm x 666mm (2m²)
    100mm Rockwool Fire Barrier Slab Foil Faced 1000mm x 666mm (2m²)
    £160.84 Inc VAT
    £80.50 Per M²
  30. 50mm Kingspan Kooltherm K5 External Wall Board 1200mm x 600mm (4' x 2') Pack of 10 (7.2m²)
    50mm Kingspan Kooltherm K5 External Wall Board 1200mm x 600mm (4' x 2') Pack of 10 (7.2m²)
    £159.06 Inc VAT
    £22.09 Per M²

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