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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  • 150mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant 150mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant
    Autumn Offers
    COSYWOOL by Thermafleece

    TF/COSY-150x570

    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
    you save £-98.60
    £82.17 ex. VAT
    £16.77 per m²
    £0.00 you save £-82.17
  • 50mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant 50mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant
    Autumn Offers
    COSYWOOL by Thermafleece

    TF/COSY-50x570

    50mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls)

    £99.55
    £6.72 per m²
    £82.96 ex. VAT
    £5.60 per m²
    £99.55
    £6.72 per m²
    you save £-99.55
    £82.96 ex. VAT
    £5.60 per m²
    £0.00 you save £-82.96
  • 100mm Thermafleece CosyWool Sheep Wool (3 x 400mm rolls) | Insulation Merchant 100mm Thermafleece CosyWool Sheep Wool (3 x 400mm rolls) | Insulation Merchant
    Autumn Offers
    COSYWOOL by Thermafleece

    TF/COSY-100x400

    100mm Thermafleece CosyWool Sheep Wool (3 x 400mm rolls)

    £104.55
    £13.40 per m²
    £87.13 ex. VAT
    £11.17 per m²
    £104.55
    £13.40 per m²
    you save £-104.55
    £87.13 ex. VAT
    £11.17 per m²
    £0.00 you save £-87.13
  • 50mm STEICO Flex 036 - 375mm x 1190mm (4.016m² / 9 per pack) | Insulation Merchant 50mm STEICO Flex 036 - 375mm x 1190mm (4.016m² / 9 per pack) | Insulation Merchant
    Sale 10%
    Autumn Offers
    FLEX 036 by Steico

    STE/FLEX37-50

    50mm STEICO Flex 036 - 375mm x 1190mm (4.016m² / 9 per pack)

    £32.74
    £8.15 per m²
    £27.28 ex. VAT
    £6.79 per m²
    £32.74
    £8.15 per m²
    £36.60 you save £3.86
    £27.28 ex. VAT
    £6.79 per m²
    £30.50 you save £3.22
  • 75mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) 75mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls)
    Autumn Offers
    COSYWOOL by Thermafleece

    TF/COSY-75x570

    75mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls)

    £97.40
    £10.05 per m²
    £81.17 ex. VAT
    £8.38 per m²
    £97.40
    £10.05 per m²
    you save £-97.40
    £81.17 ex. VAT
    £8.38 per m²
    £0.00 you save £-81.17
  • 140mm STEICO Flex 036 - 575mm x 1190mm (2.737m² / 4 per pack) | Insulation Merchant 140mm STEICO Flex 036 - 575mm x 1190mm (2.737m² / 4 per pack) | Insulation Merchant
    Sale 9%
    Autumn Offers
    FLEX 036 by Steico

    STE/FLEX57-140

    140mm STEICO Flex 036 - 575mm x 1190mm (2.737m² / 4 per pack)

    £61.66
    £22.53 per m²
    £51.38 ex. VAT
    £18.77 per m²
    £61.66
    £22.53 per m²
    £68.39 you save £6.73
    £51.38 ex. VAT
    £18.77 per m²
    £56.99 you save £5.61
  • 80mm STEICO Flex 036 - 575mm x 1190mm (6 per pack) 80mm STEICO Flex 036 - 575mm x 1190mm (6 per pack)
    Sale 9%
    Autumn Offers
    FLEX 036 by Steico

    STE/FLEX57-80

    80mm STEICO Flex 036 - 575mm x 1190mm (6 per pack)

    £52.07
    £12.68 per m²
    £43.39 ex. VAT
    £10.57 per m²
    £52.07
    £12.68 per m²
    £57.36 you save £5.29
    £43.39 ex. VAT
    £10.57 per m²
    £47.80 you save £4.41
  • 140mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls) | Insulation Merchant 140mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls) | Insulation Merchant
    Autumn Offers
    COSYWOOL by Thermafleece

    TF/COSY-140x370

    140mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls)

    £96.10
    £18.81 per m²
    £80.08 ex. VAT
    £15.67 per m²
    £96.10
    £18.81 per m²
    you save £-96.10
    £80.08 ex. VAT
    £15.67 per m²
    £0.00 you save £-80.08
  • 20mm STEICO Therm SD (wet) - 600mm x 1350mm - per board | Insulation Merchant 20mm STEICO Therm SD (wet) - 600mm x 1350mm - per board | Insulation Merchant
    Sale 10%
    THERM SD WET by Steico

    STE/THERM-20

    20mm STEICO Therm SD (wet) - 600mm x 1350mm - per board

    £4.51
    £5.57 per m²
    £3.76 ex. VAT
    £4.64 per m²
    £4.51
    £5.57 per m²
    £5.04 you save £0.53
    £3.76 ex. VAT
    £4.64 per m²
    £4.20 you save £0.44
  • 140mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 370mm (1.78m²) | Insulation Merchant 140mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 370mm (1.78m²) | Insulation Merchant
    Autumn Offers
    INDITHERM HEMP - 370 by IndiNature®

    IN/TH4037-140

    140mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 370mm (1.78m²)

    £39.06
    £21.94 per m²
    £32.55 ex. VAT
    £18.29 per m²
    £39.06
    £21.94 per m²
    you save £-39.06
    £32.55 ex. VAT
    £18.29 per m²
    £0.00 you save £-32.55
  • STEICOmulti UDB Membrane - 50m x 1.5m
    MULTI UDB by Steico

    STE/UDB-5015

    STEICOmulti UDB Membrane - 50m x 1.5m

    £237.28
    £3.16 per m²
    £197.73 ex. VAT
    £2.64 per m²
    £237.28
    £3.16 per m²
    you save £-237.28
    £197.73 ex. VAT
    £2.64 per m²
    £0.00 you save £-197.73
  • 60mm STEICO Flex 036 - 575mm x 1190mm (5.474m² / 8 per pack) | Insulation Merchant 60mm STEICO Flex 036 - 575mm x 1190mm (5.474m² / 8 per pack) | Insulation Merchant
    Sale 9%
    Autumn Offers
    FLEX 036 by Steico

    STE/FLEX57-60

    60mm STEICO Flex 036 - 575mm x 1190mm (5.474m² / 8 per pack)

    £52.09
    £9.52 per m²
    £43.41 ex. VAT
    £7.93 per m²
    £52.09
    £9.52 per m²
    £57.38 you save £5.29
    £43.41 ex. VAT
    £7.93 per m²
    £47.82 you save £4.41
  • STEICO zell Air Injected/Loose Fill Wood Fibre Insulation - 15kg STEICO zell Air Injected/Loose Fill Wood Fibre Insulation - 15kg
    ZELL by Steico

    STE/ZELL-15

    STEICO zell Air Injected/Loose Fill Wood Fibre Insulation - 15kg

    £25.45
    £21.21 ex. VAT
    £25.45
    you save £-25.45
    £21.21 ex. VAT
    £0.00 you save £-21.21
  • IndiNature IndiTherm Hemp Flexibatt Insulation | Insulation Merchant IndiNature IndiTherm Hemp Flexibatt | Insulation Merchant
    Autumn Offers
    INDITHERM HEMP - 440 by IndiNature®

    IN/TH4044-100

    100mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 440mm (2.11m²)

    £33.18
    £15.73 per m²
    £27.65 ex. VAT
    £13.10 per m²
    £33.18
    £15.73 per m²
    you save £-33.18
    £27.65 ex. VAT
    £13.10 per m²
    £0.00 you save £-27.65
  • 140mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant 140mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant
    Autumn Offers
    COSYWOOL by Thermafleece

    TF/COSY-140x570

    140mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls)

    £98.50
    £18.80 per m²
    £82.08 ex. VAT
    £15.66 per m²
    £98.50
    £18.80 per m²
    you save £-98.50
    £82.08 ex. VAT
    £15.66 per m²
    £0.00 you save £-82.08
  • 50m x 1.5m Thermafleece Breather Membrane (75m²) | Insulation Merchant 50m x 1.5m Thermafleece Breather Membrane (75m²) | Insulation Merchant
    THERMAFLEECE by Thermafleece

    TF/BM-50

    50m x 1.5m Thermafleece Breather Membrane (75m²)

    £185.00
    £2.46 per m²
    £154.17 ex. VAT
    £2.06 per m²
    £185.00
    £2.46 per m²
    you save £-185.00
    £154.17 ex. VAT
    £2.06 per m²
    £0.00 you save £-154.17
  • 100mm STEICO Special Dry 600mm x 2230mm - per board | Insulation Merchant 100mm STEICO Special Dry 600mm x 2230mm - per board | Insulation Merchant
    Sale 9%
    SPECIAL DRY by Steico

    STE/SPEDRY223-100

    100mm STEICO Special Dry 600mm x 2230mm - per board

    £46.54
    £36.70 per m²
    £38.78 ex. VAT
    £30.59 per m²
    £46.54
    £36.70 per m²
    £51.38 you save £4.84
    £38.78 ex. VAT
    £30.59 per m²
    £42.82 you save £4.03
  • 120mm STEICO Flex 036 - 575mm x 1190mm (2.73m² / 4 per pack) | Insulation Merchant 120mm STEICO Flex 036 - 575mm x 1190mm (2.73m² / 4 per pack) | Insulation Merchant
    Sale 10%
    Autumn Offers
    FLEX 036 by Steico

    STE/FLEX57-120

    120mm STEICO Flex 036 - 575mm x 1190mm (2.73m² / 4 per pack)

    £ Looking for a price?

    Add to a quote for our best rate.

  • 60mm STEICO Therm (wet) - 600mm x 1350mm - per board | Insulation Merchant 60mm STEICO Therm (wet) - 600mm x 1350mm - per board | Insulation Merchant
    Sale 8%
    THERM WET by Steico

    STE/THERM-60

    60mm STEICO Therm (wet) - 600mm x 1350mm - per board

    £13.39
    £11.16 ex. VAT
    £13.39
    £14.60 you save £1.21
    £11.16 ex. VAT
    £12.17 you save £1.01
  • 140mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 440mm (2.11m²) | Insulation Merchant 140mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 440mm (2.11m²) | Insulation Merchant
    Autumn Offers
    INDITHERM HEMP - 440 by IndiNature®

    IN/TH4044-140

    140mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 440mm (2.11m²)

    £46.45
    £22.01 per m²
    £38.71 ex. VAT
    £18.35 per m²
    £46.45
    £22.01 per m²
    you save £-46.45
    £38.71 ex. VAT
    £18.35 per m²
    £0.00 you save £-38.71