Natural Insulation

Better for the environment, better for your house.

Shop our range of natural insulation options including wood fibre, hemp and sheep's wool from manufacturers Steico, IndiNature and Thermafleece.

Natural Insulation

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100mm STEICO Flex 036 - 575mm x 1190mm (4 per pack) | Insulation Merchant

Wood Fibre Insulation

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IndiNature IndiTherm Hemp Flexibatt Insulation | Insulation Merchant

Hemp Insulation

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Sheep's Wool

Sheep's Wool

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Wood Wool Boards

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Airtight and windtight systems | Insulation Merchant

Sustainable Building

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Showing 115 of 115 products
  • 100mm STEICO Flex 036 - 575mm x 1190mm (4 per pack) | Insulation Merchant 100mm STEICO Flex 036 - 575mm x 1190mm (4 per pack) | Insulation Merchant
    Sale 9%
    Winter Deals
    FLEX by Steico

    100mm STEICO Flex 036 - 575mm x 1190mm (4 per pack)

    £42.97
    £15.70 per m²
    £35.81 ex. VAT
    £13.08 per m²
    £42.97
    £15.70 per m²
    £47.74 Save £4.77
    £35.81 ex. VAT
    £13.08 per m²
    £39.78 Save £3.98
  • 100mm STEICO Flex 036 - 375mm x 1190mm (4 per pack) | Insulation Merchant 100mm STEICO Flex 036 - 375mm x 1190mm (4 per pack) | Insulation Merchant
    Sale 9%
    Winter Deals
    FLEX by Steico

    100mm STEICO Flex 036 - 375mm x 1190mm (4 per pack)

    £28.88
    £16.18 per m²
    £24.07 ex. VAT
    £13.48 per m²
    £28.88
    £16.18 per m²
    £31.78 Save £2.90
    £24.07 ex. VAT
    £13.48 per m²
    £26.48 Save £2.42
  • 22mm STEICO Universal Wet - 600mm x 2230mm | Insulation Merchant
    Sale 9%
    Winter Deals
    UNIVERSAL by Steico

    22mm STEICO Universal Wet - 600mm x 2230mm

    £12.15
    £9.08 per m²
    £10.13 ex. VAT
    £7.57 per m²
    £12.15
    £9.08 per m²
    £13.37 Save £1.22
    £10.13 ex. VAT
    £7.57 per m²
    £11.14 Save £1.02
  • 40mm STEICOduo Dry - 600mm x 2230mm | Insulation Merchant
    Sale 9%
    Winter Deals
    DUO DRY by Steico

    40mm STEICOduo Dry - 600mm x 2230mm

    £20.75
    £16.36 per m²
    £17.29 ex. VAT
    £13.64 per m²
    £20.75
    £16.36 per m²
    £23.05 Save £2.30
    £17.29 ex. VAT
    £13.64 per m²
    £19.21 Save £1.92
  • 40mm STEICO Therm (wet) - 600mm x 1350mm - per board | Insulation Merchant 40mm STEICO Therm (wet) - 600mm x 1350mm - per board | Insulation Merchant
    Sale 10%
    Winter Deals
    THERM WET by Steico

    40mm STEICO Therm (wet) - 600mm x 1350mm - per board

    £8.79
    £10.85 per m²
    £7.33 ex. VAT
    £9.04 per m²
    £8.79
    £10.85 per m²
    £9.77 Save £0.98
    £7.33 ex. VAT
    £9.04 per m²
    £8.14 Save £0.82
  • STE60mm STEICO Special Dry 600mm x 2230mm - per board | Insulation Merchant STE60mm STEICO Special Dry 600mm x 2230mm - per board | Insulation Merchant
    Sale 9%
    Winter Deals
    SPECIAL DRY by Steico

    60mm STEICO Special Dry 600mm x 2230mm - per board

    £27.82
    £21.94 per m²
    £23.18 ex. VAT
    £18.28 per m²
    £27.82
    £21.94 per m²
    £30.91 Save £3.09
    £23.18 ex. VAT
    £18.28 per m²
    £25.76 Save £2.58
  • IndiNature IndiTherm Hemp Flexibatt Insulation | Insulation Merchant IndiNature IndiTherm Hemp Flexibatt Insulation | Insulation Merchant
    INDITHERM HEMP - 370 by IndiNature®

    100mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 370mm (1.78m²)

    £27.90
    £15.67 per m²
    £23.25 ex. VAT
    £13.06 per m²
    £27.90
    £15.67 per m²
    Save £-27.90
    £23.25 ex. VAT
    £13.06 per m²
    £0.00 Save £-23.25
  • IndiNature IndiTherm Hemp Flexibatt Insulation | Insulation Merchant IndiNature IndiTherm Hemp Flexibatt Insulation | Insulation Merchant
    INDITHERM HEMP - 570 by IndiNature®

    100mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 570mm (2.74m²)

    £42.98
    £15.69 per m²
    £35.82 ex. VAT
    £13.07 per m²
    £42.98
    £15.69 per m²
    Save £-42.98
    £35.82 ex. VAT
    £13.07 per m²
    £0.00 Save £-35.82
  • 100mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls) | Insulation Merchant 100mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls) | Insulation Merchantv
    COSYWOOL by Thermafleece

    100mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls)

    £96.80
    £13.41 per m²
    £80.67 ex. VAT
    £11.17 per m²
    £96.80
    £13.41 per m²
    Save £-96.80
    £80.67 ex. VAT
    £11.17 per m²
    £0.00 Save £-80.67
  • 100mm Thermafleece Supasoft Insulation (2 x 590mm rolls) - 5.90m² | Insulation Merchant 100mm Thermafleece Supasoft Insulation (2 x 590mm rolls) - 5.90m² | Insulation Merchant
    SUPASOFT by Thermafleece

    100mm Thermafleece Supasoft Insulation (2 x 590mm rolls) - 5.90m²

    £ Looking for a price?

    Add to a quote for our best rate.

  • 90mm Thermafleece UltraWool Slab (590mm wide) 90mm Thermafleece UltraWool Slab (590mm wide)
    ULTRAWOOL by Thermafleece

    90mm Thermafleece UltraWool Slab (590mm wide)

    £214.57
    £25.24 per m²
    £178.81 ex. VAT
    £21.04 per m²
    £214.57
    £25.24 per m²
    Save £-214.57
    £178.81 ex. VAT
    £21.04 per m²
    £0.00 Save £-178.81
  • 50mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 370mm (3.55m²) | Insulation Merchant 50mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 370mm (3.55m²) | Insulation Merchant
    INDITHERM HEMP - 370 by IndiNature®

    50mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 370mm (3.55m²)

    £27.90
    £7.86 per m²
    £23.25 ex. VAT
    £6.55 per m²
    £27.90
    £7.86 per m²
    Save £-27.90
    £23.25 ex. VAT
    £6.55 per m²
    £0.00 Save £-23.25
  • 50mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 570mm (5.47m²) | Insulation Merchant 50mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 570mm (5.47m²) | Insulation Merchant
    INDITHERM HEMP - 570 by IndiNature®

    50mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 570mm (5.47m²)

    £42.98
    £7.86 per m²
    £35.82 ex. VAT
    £6.55 per m²
    £42.98
    £7.86 per m²
    Save £-42.98
    £35.82 ex. VAT
    £6.55 per m²
    £0.00 Save £-35.82
  • 100mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant 100mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant
    COSYWOOL by Thermafleece

    100mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls)

    £99.35
    £13.41 per m²
    £82.79 ex. VAT
    £11.17 per m²
    £99.35
    £13.41 per m²
    Save £-99.35
    £82.79 ex. VAT
    £11.17 per m²
    £0.00 Save £-82.79
  • 50mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls) | Insulation Merchant 50mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls) | Insulation Merchant
    COSYWOOL by Thermafleece

    50mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls)

    £96.95
    £6.72 per m²
    £80.79 ex. VAT
    £5.60 per m²
    £96.95
    £6.72 per m²
    Save £-96.95
    £80.79 ex. VAT
    £5.60 per m²
    £0.00 Save £-80.79
  • 150mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls) | Insulation Merchant 150mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls) | Insulation Merchant
    COSYWOOL by Thermafleece

    150mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls)

    £95.99
    £20.12 per m²
    £79.99 ex. VAT
    £16.77 per m²
    £95.99
    £20.12 per m²
    Save £-95.99
    £79.99 ex. VAT
    £16.77 per m²
    £0.00 Save £-79.99
  • 50mm STEICO Flex 036 - 575mm x 1190mm (6.158m² per pack) | Insulation Merchant 50mm STEICO Flex 036 - 575mm x 1190mm (6.158m² per pack) | Insulation Merchant
    Sale 9%
    Winter Deals
    FLEX by Steico

    50mm STEICO Flex 036 - 575mm x 1190mm (6.158m² per pack)

    £49.36
    £8.02 per m²
    £41.13 ex. VAT
    £6.68 per m²
    £49.36
    £8.02 per m²
    £54.84 Save £5.48
    £41.13 ex. VAT
    £6.68 per m²
    £45.70 Save £4.57
  • 75mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls) | Insulation Merchant 75mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls) | Insulation Merchant
    COSYWOOL by Thermafleece

    75mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls)

    £94.90
    £10.05 per m²
    £79.08 ex. VAT
    £8.38 per m²
    £94.90
    £10.05 per m²
    Save £-94.90
    £79.08 ex. VAT
    £8.38 per m²
    £0.00 Save £-79.08
  • 40mm STEICO Flex 036 - 375mm x 1190mm (4.463m² / 10 per pack) | Insulation Merchant 40mm STEICO Flex 036 - 375mm x 1190mm (4.463m² / 10 per pack) | Insulation Merchant
    Sale 9%
    Winter Deals
    FLEX by Steico

    40mm STEICO Flex 036 - 575mm x 1190mm (6.843m² / 10 per pack)

    £42.97
    £6.28 per m²
    £35.81 ex. VAT
    £5.23 per m²
    £42.97
    £6.28 per m²
    £47.74 Save £4.77
    £35.81 ex. VAT
    £5.23 per m²
    £39.78 Save £3.98
  • 150mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant 150mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant
    COSYWOOL by Thermafleece

    150mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls)

    £98.60
    £20.12 per m²
    £82.17 ex. VAT
    £16.77 per m²
    £98.60
    £20.12 per m²
    Save £-98.60
    £82.17 ex. VAT
    £16.77 per m²
    £0.00 Save £-82.17