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
  • 20mm Mannok Therm PIR Board - per board | Insulation Merchant

    5.0

    by Mannok

    20mm Mannok Therm PIR Board - per board

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  • Foam Glass Aggregate/Gravel - All Sizes
    Sale 99%
    AGGREGATE by Foamed Glass UK

    Foam Glass Aggregate/Gravel - All Sizes

    From £1.00 per item
    £1.67 per m³
    inc. VAT
    From £0.83 per item
    £1.39 per m³
    ex. VAT
    £108.90 Save £107.90
    From £1.00 per item
    £1.67 per m³
    inc. VAT
    £90.75 Save £89.92
    From £0.83 per item
    £1.39 per m³
    ex. VAT
  • 150mm PIR Insulation Board | Insulation Merchant
    ULTIMATE by Insulation Merchant

    150mm PIR Insulation Board

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  • 140mm Knauf Rocksilk Flexible Slab (1200mm x 600mm) | Insulation Merchant
    ROCKSILK by Knauf Insulation

    140mm Knauf Rocksilk Flexible Slab (1200mm x 600mm)

    £68.18 per item
    £31.56 per m²
    inc. VAT
    £56.82 per item
    £26.30 per m²
    ex. VAT
    Save £-68.18
    £68.18 per item
    £31.56 per m²
    inc. VAT
    £0.00 Save £-56.82
    £56.82 per item
    £26.30 per m²
    ex. VAT
  • 70mm PIR Insulation Board | Insulation Merchant
    ULTIMATE by Insulation Merchant

    70mm PIR Insulation Board

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  • 200mm Knauf Loft Roll 44 (Combi-Cut) - PALLET OF 12 | Insulation Merchant
    Free Shipping
    LOFT ROLL by Knauf Insulation

    200mm Knauf Loft Roll 44 (Combi-Cut) - PALLET OF 12

    £434.68 per item
    £73.30 per m²
    inc. VAT
    £362.23 per item
    £61.08 per m²
    ex. VAT
    Save £-434.68
    £434.68 per item
    £73.30 per m²
    inc. VAT
    £0.00 Save £-362.23
    £362.23 per item
    £61.08 per m²
    ex. VAT
  • 150mm Knauf Loft Roll 44 (Combi-Cut) - PALLET OF 12 | Insulation Merchant
    Free Shipping
    LOFT ROLL by Knauf Insulation

    150mm Knauf Loft Roll 44 (Combi-Cut) - PALLET OF 12

    £432.17 per item
    £47.08 per m²
    inc. VAT
    £360.14 per item
    £39.23 per m²
    ex. VAT
    Save £-432.17
    £432.17 per item
    £47.08 per m²
    inc. VAT
    £0.00 Save £-360.14
    £360.14 per item
    £39.23 per m²
    ex. VAT
  • SRS Impactafoam Tape - 15m x 50mm x 5mm - per roll | Insulation Merchant
    by Sound Reduction Systems

    SRS Impactafoam Tape - 15m x 50mm x 5mm - per roll

    £24.65 per item
    £1.64 per LM (linear metre)
    inc. VAT
    £20.54 per item
    £1.37 per LM (linear metre)
    ex. VAT
    Save £-24.65
    £24.65 per item
    £1.64 per LM (linear metre)
    inc. VAT
    £0.00 Save £-20.54
    £20.54 per item
    £1.37 per LM (linear metre)
    ex. VAT
  • 50mm Thermafleece Supasoft Roll (3 x 390mm rolls) | Insulation Merchant
    SUPASOFT by Thermafleece

    50mm Thermafleece Supasoft Roll (3 x 390mm rolls)

    £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
  • YBS SuperQuilt - 10m x 1.5m | Insulation Merchant
    SUPERQUILT by YBS Insulation

    YBS SuperQuilt - 10m x 1.5m

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  • 90mm Superglass Timber & Rafter Roll 40 | Insulation Merchant
    TIMBER & RAFTER ROLL by Superglass

    90mm Superglass Timber & Rafter Roll 40

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  • Rockwool RW5
    Free Rockwool gloves with your order!
    RW5 by ROCKWOOL®

    Rockwool RW5

    From £33.90 per item
    £5.89 per m²
    inc. VAT
    From £28.25 per item
    £4.90 per m²
    ex. VAT
    Save £-33.90
    From £33.90 per item
    £5.89 per m²
    inc. VAT
    £0.00 Save £-28.25
    From £28.25 per item
    £4.90 per m²
    ex. VAT
  • 80mm PIR Insulation Board | Insulation Merchant
    ULTIMATE by Insulation Merchant

    80mm PIR Insulation Board

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  • 140mm Knauf Omnifit Slab 35 (600mm wide) | Insulation Merchant
    OMNIFIT by Knauf Insulation

    140mm Knauf Omnifit Slab 35 (600mm wide)

    £61.20 per item
    £21.25 per m²
    inc. VAT
    £51.00 per item
    £17.71 per m²
    ex. VAT
    Save £-61.20
    £61.20 per item
    £21.25 per m²
    inc. VAT
    £0.00 Save £-51.00
    £51.00 per item
    £17.71 per m²
    ex. VAT
  • 25mm Unilin (Xtratherm) Thin-R PIR Board - per board | Insulation Merchant
    THIN-R PIR BOARD by Unilin

    30mm Unilin (Xtratherm) Thin-R PIR Board - per board

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  • 70mm Knauf Rocksilk Flexible Slab (1200mm x 600mm) | Insulation Merchant
    ROCKSILK by Knauf Insulation

    70mm Knauf Rocksilk Flexible Slab (1200mm x 600mm)

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  • Knauf Rocksilk Flexible Slab | Insulation Merchant
    ROCKSILK by Knauf Insulation

    100mm Knauf Rocksilk Flexible Slab (1200mm x 600mm)

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    Add to a quote for our best rate.

  • Knauf Loft Roll 44 (Combi-Cut) | Insulation Merchant
    Free Shipping
    LOFT ROLL by Knauf Insulation

    100mm Knauf Loft Roll 44 (Combi-Cut) - PALLET OF 12

    £442.54 per item
    £2.66 per m²
    inc. VAT
    £368.78 per item
    £2.21 per m²
    ex. VAT
    Save £-442.54
    £442.54 per item
    £2.66 per m²
    inc. VAT
    £0.00 Save £-368.78
    £368.78 per item
    £2.21 per m²
    ex. VAT
  • 60mm PIR Insulation Board | Insulation Merchant
    by Insulation Merchant

    60mm PIR Insulation Board

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  • Breedon Quietex Crushed Limestone Chips - Pallet of 40 Bags | Insulation Merchant
    Sale 13%
    QUIETEX by Breedon

    Breedon Quietex Crushed Limestone Chips - Pallet of 40 Bags

    £204.90 per item
    inc. VAT
    £170.75 per item
    ex. VAT
    £238.00 Save £33.10
    £204.90 per item
    inc. VAT
    £198.33 Save £27.58
    £170.75 per item
    ex. VAT