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Slab 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)
    £41.50 Inc VAT
    £14.41 Per M²
  2. 100mm Rockwool RWA45 1200mm x 600mm (2.88m²)
    100mm Rockwool RWA45 1200mm x 600mm (2.88m²)
    £28.79 Inc VAT
    £10.00 Per M²
  3. 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
  4. 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
  5. 100mm Rockwool Flexi 1200mm x 400mm (2.88m²)
    100mm Rockwool Flexi 1200mm x 400mm (2.88m²)
    £46.76 Inc VAT
    £16.24 Per M²
  6. 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
  7. 75mm Rockwool RW3 1200mm x 600mm (4.32m²)
    75mm Rockwool RW3 1200mm x 600mm (4.32m²)
    £57.59 Inc VAT
    £13.33 Per M²
  8. 30mm Rockwool RWA45 1200mm x 600mm (8.64m²)
    30mm Rockwool RWA45 1200mm x 600mm (8.64m²)
    £41.27 Inc VAT
    £4.78 Per M²
  9. 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
  10. 75mm Rockwool RWA45 1200mm x 600mm (4.32m²)
    75mm Rockwool RWA45 1200mm x 600mm (4.32m²)
    £35.94 Inc VAT
    £8.32 Per M²
  11. 140mm Rockwool Flexi 1200mm x 400mm (1.92m²)
    140mm Rockwool Flexi 1200mm x 400mm (1.92m²)
    £44.94 Inc VAT
    £23.41 Per M²
  12. 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
  13. 40mm Rockwool RW3 1200mm x 600mm (7.2m²)
    40mm Rockwool RW3 1200mm x 600mm (7.2m²)
    £59.34 Inc VAT
    £8.24 Per M²
  14. 50mm Rockwool RW3 1200mm x 600mm (5.76m²)
    50mm Rockwool RW3 1200mm x 600mm (5.76m²)
    £51.76 Inc VAT
    £8.99 Per M²
  15. 100mm Rockwool RWA45 1200mm x 600mm Pallet of 20 (57.6m²) Bulk Buy Saving
    100mm Rockwool RWA45 1200mm x 600mm Pallet of 20 (57.6m²)
    £598.80 Inc VAT
    £10.39 Per M²
  16. 140mm Rockwool Flexi 1200mm x 600mm (2.88m²)
    140mm Rockwool Flexi 1200mm x 600mm (2.88m²)
    £65.38 Inc VAT
    £22.70 Per M²
  17. 40mm Rockwool RWA45 1200mm x 600mm (8.64m²)
    40mm Rockwool RWA45 1200mm x 600mm (8.64m²)
    £53.84 Inc VAT
    £6.23 Per M²
  18. 100mm Rockwool Thermal Insulation Cavity Batt 1200mm x 455mm Pallet of 20 (65.52m²) Bulk Buy Saving
    100mm Rockwool Thermal Insulation Cavity Batt 1200mm x 455mm Pallet of 20 (65.52m²)
    £695.76 Inc VAT
    £10.62 Per M²
  19. 70mm Rockwool Flexi 1200mm x 600mm (5.76m²)
    70mm Rockwool Flexi 1200mm x 600mm (5.76m²)
    £71.93 Inc VAT
    £12.49 Per M²
  20. 100mm Rockwool Flexi 1200mm x 600mm (4.32m²)
    100mm Rockwool Flexi 1200mm x 600mm (4.32m²)
    £70.09 Inc VAT
    £16.22 Per M²
  21. 75mm Isover CWS 36 Cavity Wall Slab 1200mm x 455mm (8.74m²)
    75mm Isover CWS 36 Cavity Wall Slab 1200mm x 455mm (8.74m²)
    £53.39 Inc VAT
    £6.11 Per M²
  22. 50mm Rockwool Flexi 1200mm x 600mm (8.64m²)
    50mm Rockwool Flexi 1200mm x 600mm (8.64m²)
    £71.15 Inc VAT
    £8.23 Per M²
  23. 100mm Isover CWS 32 Cavity Wall Slab 1200mm x 455mm (3.28m²) Quantity Discount
    100mm Isover CWS 32 Cavity Wall Slab 1200mm x 455mm (3.28m²)
    £46.82 Inc VAT As low as £45.43 Inc VAT
    £14.28 Per M²
  24. 75mm Isover CWS 32 Cavity Wall Slab 1200mm x 455mm (5.46m²)
    75mm Isover CWS 32 Cavity Wall Slab 1200mm x 455mm (5.46m²)
    £63.83 Inc VAT
    £11.69 Per M²
  25. 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
  26. 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
  27. 50mm Rockwool Ablative Coated Batt 1200mm x 600mm
    50mm Rockwool Ablative Coated Batt 1200mm x 600mm
    £20.83 Inc VAT
    £28.93 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. 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
  30. 50mm Rockwool RWA45 1200mm x 600mm (6.48m²)
    50mm Rockwool RWA45 1200mm x 600mm (6.48m²)
    £35.94 Inc VAT
    £5.54 Per M²
    Out of stock

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