Floor

Products for floor insulation projects

Our insulation is tailored to fit the diverse sizes and widths of floor joists found in British homes, ensuring every building's needs are met.

Designed for easy installation, our floor insulation fits seamlessly beneath flooring, providing exceptional thermal protection and sound-dampening properties.

Transform a home's comfort and energy efficiency with our range of floor insulation. 

Floor

Learn more from our blogs

Insulating Ground Floors

To undertake a ground floor thermal insulation upgrade it is first important to establish if it is possible or not. In domestic buildings, broadly speaking, there are two styles of floor type - solid ground floor and suspended floor, each with its pros and cons.

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Showing 145 of 145 products
  • 25mm PIR Insulation Board | Insulation Merchant

    5.0

    ULTIMATE by Insulation Merchant

    25mm PIR Insulation Board

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

    5.0

    SUPASOFT by Thermafleece

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

    £58.40 per item
    £9.90 per m²
    inc. VAT
    £48.67 per item
    £8.25 per m²
    ex. VAT
    Save £-58.40
    £58.40 per item
    £9.90 per m²
    inc. VAT
    £0.00 Save £-48.67
    £48.67 per item
    £8.25 per m²
    ex. VAT
  • 170mm Knauf Loft Roll 44 (Combi-Cut) | Insulation Merchant
    Free Shipping
    LOFT ROLL by Knauf Insulation

    170mm Knauf Loft Roll 44 (Combi-Cut)

    £45.68 per item
    £5.70 per m²
    inc. VAT
    £38.07 per item
    £4.75 per m²
    ex. VAT
    Save £-45.68
    £45.68 per item
    £5.70 per m²
    inc. VAT
    £0.00 Save £-38.07
    £38.07 per item
    £4.75 per m²
    ex. VAT
  • 100mm PIR Insulation Board - 1200mm x 2400mm | Insulation Merchant
    ULTIMATE by Insulation Merchant

    100mm PIR Insulation Board - 1200mm x 2400mm

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  • 30mm SecilVit Cork Board | Insulation Merchant
    by SecilVit

    SecilVit Cork Board

    From £13.97 per item
    £27.94 per m²
    inc. VAT
    From £11.64 per item
    £23.28 per m²
    ex. VAT
    Save £-13.97
    From £13.97 per item
    £27.94 per m²
    inc. VAT
    £0.00 Save £-11.64
    From £11.64 per item
    £23.28 per m²
    ex. VAT
  • 100mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant
    COSYWOOL by Thermafleece

    25mm Thermafleece CosyWool Sheep Wool (1 x 370mm roll)

    £22.50 per item
    £5.07 per m²
    inc. VAT
    £18.75 per item
    £4.22 per m²
    ex. VAT
    £22.50 Save £0.00
    £22.50 per item
    £5.07 per m²
    inc. VAT
    £18.75 Save £0.00
    £18.75 per item
    £4.22 per m²
    ex. VAT
  • Rockwool RWA45 Acoustic Thermal Insulation Slabs
    Free Rockwool gloves with your order!
    RWA45 by ROCKWOOL®

    Rockwool RWA45 Acoustic Thermal Insulation Slabs

    From £43.54 per item
    £3.78 per m²
    inc. VAT
    From £36.28 per item
    £3.15 per m²
    ex. VAT
    Save £-43.54
    From £43.54 per item
    £3.78 per m²
    inc. VAT
    £0.00 Save £-36.28
    From £36.28 per item
    £3.15 per m²
    ex. VAT
  • 15mm Unilin (Xtratherm) Thin-R PIR Board - per board | Insulation Merchant
    THIN-R PIR BOARD by Unilin

    15mm Unilin (Xtratherm) Thin-R PIR Board - per board

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  • 100mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant

    5.0

    COSYWOOL ROLL by Thermafleece

    Thermafleece CosyWool Sheep Wool Roll Insulation - 400 & 300mm

    £104.55 per item
    £13.40 per m²
    inc. VAT
    £87.13 per item
    £11.17 per m²
    ex. VAT
    Save £-104.55
    £104.55 per item
    £13.40 per m²
    inc. VAT
    £0.00 Save £-87.13
    £87.13 per item
    £11.17 per m²
    ex. VAT
  • 100mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant
    COSYWOOL by Thermafleece

    25mm Thermafleece CosyWool Sheep Wool (1 x 570mm roll)

    £34.65 per item
    £5.07 per m²
    inc. VAT
    £28.88 per item
    £4.22 per m²
    ex. VAT
    £34.65 Save £0.00
    £34.65 per item
    £5.07 per m²
    inc. VAT
    £28.88 Save £0.00
    £28.88 per item
    £4.22 per m²
    ex. VAT
  • 80mm Superglass Multi Acoustic Roll | Insulation Merchant
    MULTI ACOUSTIC ROLL by Superglass

    80mm Superglass Multi Acoustic Roll

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  • 50mm PIR Insulation Board | Insulation Merchant
    PIR BOARD by Insulation Merchant

    50mm PIR Insulation Board

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  • 40mm PIR Insulation Board | Insulation Merchant
    ULTIMATE by Insulation Merchant

    40mm PIR Insulation Board

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  • Breedon Quietex Crushed Limestone Chips - 20kg bag | Insulation Merchant
    Sale 11%
    QUIETEX by Breedon

    Breedon Quietex Crushed Limestone Chips - 20kg bag

    £5.25 per item
    inc. VAT
    £4.38 per item
    ex. VAT
    £5.95 Save £0.70
    £5.25 per item
    inc. VAT
    £4.96 Save £0.58
    £4.38 per item
    ex. VAT
  • 140mm PIR Insulation Board | Insulation Merchant

    5.0

    ULTIMATE by Insulation Merchant

    140mm PIR Insulation Board

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  • 75mm PIR Insulation Board - 1200mm x 2400mm | Insulation Merchant
    ULTIMATE by Insulation Merchant

    75mm PIR Insulation Board - 1200mm x 2400mm

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    Add to a quote for our best rate.

  • 90mm PIR Insulation Board (2400mm x 1200mm) | Insulation Merchant
    ULTIMATE by Insulation Merchant

    90mm PIR Insulation Board (2400mm x 1200mm)

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    Add to a quote for our best rate.

  • 100mm Superglass Multi Acoustic Roll | Insulation Merchant
    MULTI ACOUSTIC ROLL by Superglass

    100mm Superglass Multi Acoustic Roll

    £52.90 per item
    £4.36 per m²
    inc. VAT
    £44.08 per item
    £3.64 per m²
    ex. VAT
    Save £-52.90
    £52.90 per item
    £4.36 per m²
    inc. VAT
    £0.00 Save £-44.08
    £44.08 per item
    £3.64 per m²
    ex. VAT
  • 50mm Thermafleece Supasoft Roll (2 x 590mm rolls) | Insulation Merchant
    SUPASOFT by Thermafleece

    50mm Thermafleece Supasoft Roll (2 x 590mm rolls)

    £58.40 per item
    £4.95 per m²
    inc. VAT
    £48.67 per item
    £4.12 per m²
    ex. VAT
    Save £-58.40
    £58.40 per item
    £4.95 per m²
    inc. VAT
    £0.00 Save £-48.67
    £48.67 per item
    £4.12 per m²
    ex. VAT
  • 100mm Thermafleece Supasoft Roll (3 x 390mm rolls) - 5.90m²| Insulation Merchant
    SUPASOFT by Thermafleece

    100mm Thermafleece Supasoft Roll (3 x 390mm rolls) - 5.90m²

    £58.40 per item
    £9.90 per m²
    inc. VAT
    £48.67 per item
    £8.25 per m²
    ex. VAT
    Save £-58.40
    £58.40 per item
    £9.90 per m²
    inc. VAT
    £0.00 Save £-48.67
    £48.67 per item
    £8.25 per m²
    ex. VAT