Airtight & Windtight Membranes

Airtightness and Widtightness are important aspects to consider when building or renovating. Air leakage into and out of a property can be detrimental to the thermal performance of insulation. Creating an airtight seal in the property with an airtight & windtight membrane can prevent cold air from entering and hot air from escaping. 

We also have a range of airtight tapes and accessories to go along with the airtightness membranes.

View more in the Airtight range
Airtight & Windtight Membranes
Clear all filters

Showing 77 of 77 products

Sort by:
Brand Reset
Sub-Brand Reset
Product type Reset
Thermal Conductivity (Product) Reset
Price Reset
Price: 0 – £944.90
Filter and sort

Filter and sort

Showing 77 of 77 products

Brand
Clear
Sub-Brand
Clear
Product type
Clear
Thermal Conductivity (Product)
Clear
Price

Up to £944.90

Clear
Clear all filters
Clear all filters
Showing 77 of 77 products
  • SIGA Wetguard® 200 SA - 1560mm x 50m | Insulation Merchant
    WETGUARD® by SIGA

    SIGA Wetguard® 200 SA - 1560mm x 50m

    £764.35 per item
    £9.79 per m²
    inc. VAT
    £636.96 per item
    £8.17 per m²
    ex. VAT
    Save £-764.35
    £764.35 per item
    £9.79 per m²
    inc. VAT
    £0.00 Save £-636.96
    £636.96 per item
    £8.17 per m²
    ex. VAT
  • ROTHOBLAAS Traspir 150 (Breather Membrane) [BBA]
    Sale 5%
    External Use
    TRASPIR by Rothoblaas

    ROTHOBLAAS Traspir 150 (Breather Membrane) [BBA]

    From £0.95 per item
    £0.01 per m²
    inc. VAT
    From £0.79 per item
    £0.01 per m²
    ex. VAT
    £1.00 Save £0.05
    From £0.95 per item
    £0.01 per m²
    inc. VAT
    £0.83 Save £0.04
    From £0.79 per item
    £0.01 per m²
    ex. VAT
  • ROTHOBLAAS Clima Control 80 (Variable Vapour Control Membrane) (1.5m x 50m)
    Sale 5%
    Internal Use
    CLIMA CONTROL by Rothoblaas

    ROTHOBLAAS Clima Control 80 (Variable Vapour Control Membrane) (1.5m x 50m)

    £143.56 per item
    £1.91 per m²
    inc. VAT
    £119.63 per item
    £1.60 per m²
    ex. VAT
    £151.12 Save £7.56
    £143.56 per item
    £1.91 per m²
    inc. VAT
    £125.93 Save £6.30
    £119.63 per item
    £1.60 per m²
    ex. VAT
  • Pro Clima Aerosanna Fleece | Insulation Merchant
    Sale 5%
    AEROSANA FLEECE by Pro Clima

    Pro Clima Aerosanna Fleece

    Looking for a price?

    Add to a quote for our best rate.

  • Blowerproof Liquid Brush Paint on Airtightness Membrane (Blue / Black) - 5kg | Insulation Merchant
    LIQUID BRUSH by Blowerproof

    Blowerproof Liquid Brush Paint on Airtightness Membrane (Blue / Black) - 5kg

    Looking for a price?

    Add to a quote for our best rate.

  • DuPont™ AirGuard® A2 FR AVCL - Fire Retardant Membrane - 1.2 x 50m | Insulation Merchant
    AIRGUARD® by DuPont - Performance Building Solutions

    DuPont™ AirGuard® A2 FR AVCL - Fire Retardant Membrane - 1.2 x 50m

    Looking for a price?

    Add to a quote for our best rate.

  • DuPont™ Tyvek® Supro - Breather Felt Roof Membrane - 50m x 1m (50m²) | Insulation Merchant
    TYVEK® by DuPont - Performance Building Solutions

    DuPont™ Tyvek® Supro - Breather Felt Roof Membrane - 50m x 1m (50m²)

    £135.90 per item
    £2.71 per m²
    inc. VAT
    £113.25 per item
    £2.27 per m²
    ex. VAT
    Save £-135.90
    £135.90 per item
    £2.71 per m²
    inc. VAT
    £0.00 Save £-113.25
    £113.25 per item
    £2.27 per m²
    ex. VAT
  • ROTHOBLAAS Vapor NET 110 (Reinforced Vapour Control Membrane) (1.5m x 50m)
    Sale 5%
    VAPOR NET 110 by Rothoblaas

    ROTHOBLAAS Vapor NET 110 (Reinforced Vapour Control Membrane) (1.5m x 50m)

    £86.95 per item
    £1.15 per m²
    inc. VAT
    £72.46 per item
    £0.97 per m²
    ex. VAT
    £91.53 Save £4.58
    £86.95 per item
    £1.15 per m²
    inc. VAT
    £76.28 Save £3.82
    £72.46 per item
    £0.97 per m²
    ex. VAT
  • ROTHOBLAAS Barrier NET SD40 (Vapour Control Membrane) (1.5m x 50m)
    Sale 5%
    Internal Use
    BARRIER by Rothoblaas

    ROTHOBLAAS Barrier NET SD40 (Vapour Control Membrane) (1.5m x 50m)

    £57.31 per item
    £0.76 per m²
    inc. VAT
    £47.76 per item
    £0.64 per m²
    ex. VAT
    £60.33 Save £3.02
    £57.31 per item
    £0.76 per m²
    inc. VAT
    £50.28 Save £2.52
    £47.76 per item
    £0.64 per m²
    ex. VAT
  • DuPont™ Tyvek® Trifecta™ A2 Fire Rated External Breather Membrane - 1.5m x 25m (37.5m²) | Insulation Merchant
    TYVEK® by DuPont - Performance Building Solutions

    DuPont™ Tyvek® Trifecta™ A2 Fire Rated External Breather Membrane - 1.5m x 25m (37.5m²)

    Looking for a price?

    Add to a quote for our best rate.

  • PROCTOR Procheck® A2 FR Vapour & Airtight Membrane - 50m x 1.2m | Insulation Merchant
    PROCHECK® by A. Proctor Group

    PROCTOR Procheck® A2 FR Vapour & Airtight Membrane - 50m x 1.2m

    Looking for a price?

    Add to a quote for our best rate.

  • DuPont™ Tyvek® UV Facade - Rainscreen UV Membrane - 50m x 1.5m (75m²) | Insulation Merchant
    TYVEK® by DuPont - Performance Building Solutions

    DuPont™ Tyvek® UV Facade - Rainscreen UV Membrane - 50m x 1.5m (75m²)

    Looking for a price?

    Add to a quote for our best rate.

  • Blowerproof Liquid Spray on Airtightness Membrane (White) - 10kg | Insulation Merchant
    LIQUID SPRAY by Blowerproof

    Blowerproof Liquid Spray on Airtightness Membrane (White) - 10kg

    Looking for a price?

    Add to a quote for our best rate.

  • Blowerproof Liquid Spray on Airtightness Membrane (Blue / Black) - 10kg | Insulation Merchant
    LIQUID SPRAY by Blowerproof

    Blowerproof Liquid Spray on Airtightness Membrane (Blue / Black) - 10kg

    Looking for a price?

    Add to a quote for our best rate.

  • SIGA Majcoat® 150 SOB Breather Membrane - 1.5m x 50m | Insulation Merchant
    MAJCOAT® by SIGA

    SIGA Majcoat® 150 SOB Breather Membrane - 1.5m x 50m

    £240.00 per item
    £3.20 per m²
    inc. VAT
    £200.00 per item
    £2.67 per m²
    ex. VAT
    Save £-240.00
    £240.00 per item
    £3.20 per m²
    inc. VAT
    £0.00 Save £-200.00
    £200.00 per item
    £2.67 per m²
    ex. VAT
  • Pro Clima Solitex Adhero Visto - Transparent Self Adhesive Air & Weathertight Membrane (1.5m x 30m)
    New
    SOLITEX by Pro Clima

    Pro Clima Solitex Adhero Visto - Transparent Self Adhesive Air & Weathertight Membrane (1.5m x 30m)

    Looking for a price?

    Add to a quote for our best rate.

  • ROTHOBLAAS Barrier ALU NET Adhesive 300 (Reflective Self-adhesive Vapour Control Membrane) (1.45m x 50m)
    Sale 5%
    BARRIER by Rothoblaas

    ROTHOBLAAS Barrier ALU NET Adhesive 300 (Reflective Self-adhesive Vapour Control Membrane) (1.45m x 50m)

    £650.73 per item
    £8.98 per m²
    inc. VAT
    £542.28 per item
    £7.48 per m²
    ex. VAT
    £684.98 Save £34.25
    £650.73 per item
    £8.98 per m²
    inc. VAT
    £570.82 Save £28.54
    £542.28 per item
    £7.48 per m²
    ex. VAT
  • ROTHOBLAAS Barrier ALU Fire A2 SD2500 (Reflective Vapour Control Membrane) (1.2m x 50m)
    Sale 5%
    TRASPIR by Rothoblaas

    ROTHOBLAAS Barrier ALU Fire A2 SD2500 (Reflective Vapour Control Membrane) (1.2m x 50m)

    £504.82 per item
    £8.41 per m²
    inc. VAT
    £420.68 per item
    £7.01 per m²
    ex. VAT
    £531.39 Save £26.57
    £504.82 per item
    £8.41 per m²
    inc. VAT
    £442.83 Save £22.14
    £420.68 per item
    £7.01 per m²
    ex. VAT
  • ROTHOBLAAS Traspir Adhesive 260 (Breathable Self-adhesive Membrane) (1.45m x 50m)
    Sale 5%
    External Use
    TRASPIR by Rothoblaas

    ROTHOBLAAS Traspir Adhesive 260 (Breathable Self-adhesive Membrane) (1.45m x 50m)

    £604.61 per item
    £8.34 per m²
    inc. VAT
    £503.84 per item
    £6.95 per m²
    ex. VAT
    £636.44 Save £31.83
    £604.61 per item
    £8.34 per m²
    inc. VAT
    £530.37 Save £26.53
    £503.84 per item
    £6.95 per m²
    ex. VAT
  • ROTHOBLAAS Traspir EVO 160 TT (Monolithic Breather Membrane) (1.5m x 50m)
    Sale 5%
    External Use
    TRASPIR by Rothoblaas

    ROTHOBLAAS Traspir EVO 160 TT (Monolithic Breather Membrane) (1.5m x 50m)

    £232.27 per item
    £3.09 per m²
    inc. VAT
    £193.56 per item
    £2.58 per m²
    ex. VAT
    £244.50 Save £12.23
    £232.27 per item
    £3.09 per m²
    inc. VAT
    £203.75 Save £10.19
    £193.56 per item
    £2.58 per m²
    ex. VAT