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.

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Airtight & Windtight Membranes
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  • Pro Clima Intello Plus - Vapour Check Membrane | Insulation Merchant Pro Clima Intello Plus - Vapour Check Membrane | Tescon Vana | Insulation Merchant
    Sale 10%

    5.0

    INTELLO PLUS by Pro Clima

    1.5m Pro Clima Intello Plus - Vapour Check Membrane (50m)

    £223.50
    £2.98 per m²
    £223.50
    £2.98 per m²
    £249.30 Save £25.80
  • Pro Clima Solitex Plus - Vapour Permeable Membrane (1.5m x 50m / 75m²) | Insulation Merchant Pro Clima Solitex Plus - Vapour Permeable Membrane (1.5m x 50m / 75m²) | Insulation Merchant
    Sale 10%

    5.0

    SOLITEX PLUS by Pro Clima

    Pro Clima Solitex Plus - Vapour Permeable Membrane (1.5m x 50m / 75m²)

    £221.00
    £2.94 per m²
    £221.00
    £2.94 per m²
    £246.50 Save £25.50
  • Pro Clima | Intello Plus | Insulation Merchant Pro Clima | Intello Plus | Teson Vana | Insulation Merchant
    Sale 10%

    5.0

    INTELLO PLUS by Pro Clima

    1.5m Pro Clima Intello Plus (Small Handy Rolls) - Vapour Check Membrane (20m)

    £92.92
    £3.09 per m²
    £92.92
    £3.09 per m²
    £103.70 Save £10.78
  • Pro Clima DA (Small Handy Roll) - Membrane (1.5m x 20m / 30m²) | Insulation Merchant Pro Clima DA (Small Handy Roll) - Membrane (1.5m x 20m / 30m²) | Insulation Merchant
    Sale

    5.0

    DA by Pro Clima

    Pro Clima DA (Small Handy Roll) - Membrane (1.5m x 20m / 30m²)

    £74.08
    £2.46 per m²
    £74.08
    £2.46 per m²
    £75.00 Save £0.92
  • Pro Clima Solitex Plus (Small Handy Roll) - Vapour Permeable Membrane (1.5m x 15m / 22.5m²) | Insulation Merchant Pro Clima Solitex Plus (Small Handy Roll) - Vapour Permeable Membrane (1.5m x 15m / 22.5m²) | Insulation Merchant
    Sale 10%

    5.0

    SOLITEX PLUS by Pro Clima

    Pro Clima Solitex Plus (Small Handy Roll) - Vapour Permeable Membrane (1.5m x 15m / 22.5m²)

    £81.00
    £3.60 per m²
    £81.00
    £3.60 per m²
    £90.40 Save £9.40
  • Pro Clima DA - Membrane (1.5m x 50m / 75m²) | Insulation Merchant Pro Clima DA - Membrane (1.5m x 50m / 75m²) | Insulation Merchant

    5.0

    DA by Pro Clima

    Pro Clima DA - Membrane (1.5m x 50m / 75m²)

    £167.92
    £2.23 per m²
    £167.92
    £2.23 per m²
    Save £-167.92
  • Pro Clima Solitex Fronta WA - Wall Lining Membrane (1.5m x 50m) | Insulation Merchant Pro Clima Solitex Fronta WA - Wall Lining Membrane (1.5m x 50m) | Insulation Merchant
    SOLITEX FRONTA WA by Pro Clima

    Pro Clima Solitex Fronta WA - Wall Lining Membrane (1.5m x 50m)

    £141.58
    £141.58
    Save £-141.58
  • STEICOmulti UDB Membrane - 50m x 1.5m | Insulation Merchant
    MULTI UDB by Steico

    STEICO Multi UDB Membrane - 50m x 1.5m

    £211.67
    £2.82 per m²
    £211.67
    £2.82 per m²
    Save £-211.67
  • SIGA Majcoat® 200 SOB Diffusion Open Roof Breather Membrane - 1.5m x 50m | Insulation Merchant SIGA Majcoat® 200 SOB Diffusion Open Roof Breather Membrane - 1.5m x 50m | Insulation Merchant
    Spring Savings
    MAJCOAT® 200 by SIGA

    SIGA Majcoat® 200 SOB Diffusion Open Roof Breather Membrane - 1.5m x 50m

    £264.71
    £3.52 per m²
    £264.71
    £3.52 per m²
    Save £-264.71
  • SIGA Majrex® 200 (1-directional) Airtight Humidity Vapour Control Layer - 1.5 x 50m (75m²) | Insulation Merchant SIGA Majrex® 200 (1-directional) Airtight Humidity Vapour Control Layer - 1.5 x 50m (75m²) | Insulation Merchant
    Spring Savings
    MAJREX® by SIGA

    SIGA Majrex® 200 (1-directional) Airtight Humidity Vapour Control Layer - 1.5 x 50m (75m²)

    £317.42
    £4.23 per m²
    £317.42
    £4.23 per m²
    Save £-317.42
  • SIGA Majpell® 5 Vapour Control Layer - 1.5 x 50m (75m²) | Insulation Merchant SIGA Majpell® 5 Vapour Control Layer - 1.5 x 50m (75m²) | Insulation Merchant
    Spring Savings
    MAJPELL® 5 VCL by SIGA

    SIGA Majpell® 5 Vapour Control Layer - 1.5 x 50m (75m²)

    £194.75
    £2.59 per m²
    £194.75
    £2.59 per m²
    Save £-194.75
  • Protect BarriAir Vapour Control Layer with Integrated Tape - 1.5 x 50m | Insulation Merchant Protect BarriAir Vapour Control Layer with Integrated Tape - 1.5 x 50m | Insulation Merchant
    Spring Savings
    Free Shipping
    BARRIAIR by Protect Membranes

    Protect BarriAir Vapour Control Layer with Integrated Tape - 1.5 x 50m

    £100.92
    £1.34 per m²
    £100.92
    £1.34 per m²
    Save £-100.92
  • Pro Clima Aerosanna Visconn Spray/Paintable Airtight Sealant Membrane | Insulation Merchant Pro Clima Aerosanna Visconn Spray/Paintable Airtight Sealant Membrane | Insulation Merchant
    Sale 14%
    AEROSANA VISCONN by Pro Clima

    Pro Clima Aerosanna Visconn Spray/Paintable Airtight Sealant Membrane

    From £8.67
    From £8.67
    £10.10 Save £1.43
  • STEICOmulti Membra 5 Vapour Control Layer - 50m x 1.5m | Insulation Merchant
    MULTI MEMBRA 5 by Steico

    STEICOmulti Membra 5 Vapour Control Layer - 50m x 1.5m

    £160.32
    £2.13 per m²
    £160.32
    £2.13 per m²
    Save £-160.32
  • Pro Clima Solitex Fronta Quattro - Open Facade Membrane (1.5m x 50m) | Insulation Merchant Pro Clima Solitex Fronta Quattro - Open Facade Membrane (1.5m x 50m) | Insulation Merchant
    Sale
    SOLITEX by Pro Clima

    Pro Clima Solitex Fronta Quattro - Open Facade Membrane (1.5m x 50m)

    £304.67
    £4.06 per m²
    £304.67
    £4.06 per m²
    £306.80 Save £2.13
  • SOUDAL Soudatight LQ Paint On Airtight Membrane (Black) - 4.5kg | Insulation Merchant
    Sale 9%
    Spring Savings
    SOUDATIGHT by SOUDAL

    SOUDAL Soudatight LQ Paint On Airtight Membrane (Black) - 4.5kg

    £30.45
    £6.77 per kg
    £30.45
    £6.77 per kg
    £33.83 Save £3.38
  • SIGA Majvest® 700 SOB - Open Facade Membrane (1.5m x 33.4m) | Insulation Merchant SIGA Majvest® 700 SOB - Open Facade Membrane (1.5m x 33.4m) | Insulation Merchant
    Spring Savings
    MAJVEST® 700 SOB by SIGA

    SIGA Majvest® 700 SOB - Open Facade Membrane (1.5m x 33.4m)

    £272.63
    £5.44 per m²
    £272.63
    £5.44 per m²
    Save £-272.63
  • SOUDAL Soudatight LQ Paint On Airtight Membrane (White) - 4.5kg | Insulation Merchant
    Sale 9%
    Spring Savings
    SOUDATIGHT by SOUDAL

    SOUDAL Soudatight LQ Paint On Airtight Membrane (White) - 4.5kg

    £30.45
    £6.77 per kg
    £30.45
    £6.77 per kg
    £33.83 Save £3.38
  • Pro Clima Dasatop - 1.5m x 50m (75m²) | Insulation Merchant Pro Clima Dasatop - 1.5m x 50m (75m²) | Insulation Merchant
    Sale 10%
    DASATOP by Pro Clima

    Pro Clima Dasatop - 1.5m x 50m (75m²)

    £164.92
    £2.19 per m²
    £164.92
    £2.19 per m²
    £183.30 Save £18.38
  • SIGA Majvest® 200 - Breather Membrane (Particularly for Closed Facade) | Insulation Merchant SIGA Majvest® 200 - Breather Membrane (Particularly for Closed Facade) | Insulation Merchant
    Spring Savings
    MAJVEST® 200 by SIGA

    SIGA Majvest® 200 - Breather Membrane (Particularly for Closed Facade)

    £162.88
    £2.17 per m²
    £162.88
    £2.17 per m²
    Save £-162.88