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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Showing 77 of 77 products
  • Pro Clima Intello Plus - Vapour Check Membrane | Insulation Merchant
    Sale 10%

    5.0

    INTELLO PLUS by Pro Clima

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

    £268.20 per item
    £3.57 per m²
    inc. VAT
    £223.50 per item
    £2.98 per m²
    ex. VAT
    £299.16 Save £30.96
    £268.20 per item
    £3.57 per m²
    inc. VAT
    £249.30 Save £25.80
    £223.50 per item
    £2.98 per m²
    ex. VAT
  • Pro Clima | Intello Plus | Insulation Merchant
    Sale 10%

    5.0

    INTELLO PLUS by Pro Clima

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

    £111.50 per item
    £3.71 per m²
    inc. VAT
    £92.92 per item
    £3.10 per m²
    ex. VAT
    £124.44 Save £12.94
    £111.50 per item
    £3.71 per m²
    inc. VAT
    £103.70 Save £10.78
    £92.92 per item
    £3.10 per m²
    ex. VAT
  • 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)

    £265.20 per item
    £3.53 per m²
    inc. VAT
    £221.00 per item
    £2.95 per m²
    ex. VAT
    £295.80 Save £30.60
    £265.20 per item
    £3.53 per m²
    inc. VAT
    £246.50 Save £25.50
    £221.00 per item
    £2.95 per m²
    ex. VAT
  • 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)

    £88.90 per item
    £2.96 per m²
    inc. VAT
    £74.08 per item
    £2.47 per m²
    ex. VAT
    £90.00 Save £1.10
    £88.90 per item
    £2.96 per m²
    inc. VAT
    £75.00 Save £0.92
    £74.08 per item
    £2.47 per m²
    ex. VAT
  • 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)

    £97.20 per item
    £4.32 per m²
    inc. VAT
    £81.00 per item
    £3.60 per m²
    ex. VAT
    £108.48 Save £11.28
    £97.20 per item
    £4.32 per m²
    inc. VAT
    £90.40 Save £9.40
    £81.00 per item
    £3.60 per m²
    ex. VAT
  • 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)

    £201.50 per item
    £2.68 per m²
    inc. VAT
    £167.92 per item
    £2.24 per m²
    ex. VAT
    Save £-201.50
    £201.50 per item
    £2.68 per m²
    inc. VAT
    £0.00 Save £-167.92
    £167.92 per item
    £2.24 per m²
    ex. VAT
  • 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)

    £169.90 per item
    inc. VAT
    £141.58 per item
    ex. VAT
    Save £-169.90
    £169.90 per item
    inc. VAT
    £0.00 Save £-141.58
    £141.58 per item
    ex. VAT
  • SIGA Majcoat® 200 SOB Diffusion Open Roof Breather Membrane - 1.5m x 50m | Insulation Merchant
    MAJCOAT® by SIGA

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

    £317.65 per item
    £4.23 per m²
    inc. VAT
    £264.71 per item
    £3.53 per m²
    ex. VAT
    Save £-317.65
    £317.65 per item
    £4.23 per m²
    inc. VAT
    £0.00 Save £-264.71
    £264.71 per item
    £3.53 per m²
    ex. VAT
  • Protect BarriAir Vapour Control Layer with Integrated Tape - 1.5 x 50m | Insulation Merchant
    Sale 11%
    Free Shipping
    BARRIAIR by Protect Membranes

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

    £119.90 per item
    £1.59 per m²
    inc. VAT
    £99.92 per item
    £1.33 per m²
    ex. VAT
    £135.00 Save £15.10
    £119.90 per item
    £1.59 per m²
    inc. VAT
    £112.50 Save £12.58
    £99.92 per item
    £1.33 per m²
    ex. VAT
  • SIGA Majrex® 200 (1-directional) Airtight Humidity Vapour Control Layer - 1.5 x 50m (75m²) | Insulation Merchant
    MAJREX® by SIGA

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

    £380.90 per item
    £5.07 per m²
    inc. VAT
    £317.42 per item
    £4.23 per m²
    ex. VAT
    Save £-380.90
    £380.90 per item
    £5.07 per m²
    inc. VAT
    £0.00 Save £-317.42
    £317.42 per item
    £4.23 per m²
    ex. VAT
  • STEICOmulti UDB Membrane - 50m x 1.5m | Insulation Merchant
    MULTI UDB by Steico

    STEICO Multi UDB Membrane - 50m x 1.5m

    £254.00 per item
    £3.38 per m²
    inc. VAT
    £211.67 per item
    £2.82 per m²
    ex. VAT
    Save £-254.00
    £254.00 per item
    £3.38 per m²
    inc. VAT
    £0.00 Save £-211.67
    £211.67 per item
    £2.82 per m²
    ex. VAT
  • 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 £10.40 per item
    inc. VAT
    From £8.67 per item
    ex. VAT
    £12.12 Save £1.72
    From £10.40 per item
    inc. VAT
    £10.10 Save £1.43
    From £8.67 per item
    ex. VAT
  • SIGA Majpell® 5 Vapour Control Layer - 1.5 x 50m (75m²) | Insulation Merchant
    MAJPELL® by SIGA

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

    £233.70 per item
    £3.11 per m²
    inc. VAT
    £194.75 per item
    £2.60 per m²
    ex. VAT
    Save £-233.70
    £233.70 per item
    £3.11 per m²
    inc. VAT
    £0.00 Save £-194.75
    £194.75 per item
    £2.60 per m²
    ex. VAT
  • 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

    £192.38 per item
    £2.56 per m²
    inc. VAT
    £160.32 per item
    £2.14 per m²
    ex. VAT
    Save £-192.38
    £192.38 per item
    £2.56 per m²
    inc. VAT
    £0.00 Save £-160.32
    £160.32 per item
    £2.14 per m²
    ex. VAT
  • 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)

    £365.60 per item
    £4.87 per m²
    inc. VAT
    £304.67 per item
    £4.06 per m²
    ex. VAT
    £368.16 Save £2.56
    £365.60 per item
    £4.87 per m²
    inc. VAT
    £306.80 Save £2.13
    £304.67 per item
    £4.06 per m²
    ex. VAT
  • SOUDAL Soudatight LQ Paint On Airtight Membrane (Black) - 4.5kg | Insulation Merchant
    Sale 10%
    SOUDATIGHT by SOUDAL

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

    £36.54 per item
    £8.12 per kg
    inc. VAT
    £30.45 per item
    £6.77 per kg
    ex. VAT
    £40.60 Save £4.06
    £36.54 per item
    £8.12 per kg
    inc. VAT
    £33.83 Save £3.38
    £30.45 per item
    £6.77 per kg
    ex. VAT
  • Pro Clima Dasatop - 1.5m x 50m (75m²) | Insulation Merchant
    Sale 10%
    DASATOP by Pro Clima

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

    £197.90 per item
    £2.63 per m²
    inc. VAT
    £164.92 per item
    £2.20 per m²
    ex. VAT
    £219.96 Save £22.06
    £197.90 per item
    £2.63 per m²
    inc. VAT
    £183.30 Save £18.38
    £164.92 per item
    £2.20 per m²
    ex. VAT
  • Pro Clima Constivap 2.3 Plus - 1.5m x 50m | Insulation Merchant
    Sale 10%
    CONSTIVAP by Pro Clima

    Pro Clima Constivap 2.3 Plus - 1.5m x 50m

    £152.60 per item
    inc. VAT
    £127.17 per item
    ex. VAT
    £170.28 Save £17.68
    £152.60 per item
    inc. VAT
    £141.90 Save £14.73
    £127.17 per item
    ex. VAT
  • Pro Clima DB+ - 1.35m x 50m | Insulation Merchant
    Sale 11%
    DB+ by Pro Clima

    Pro Clima DB+ - 1.35m x 50m

    £203.90 per item
    £3.02 per m²
    inc. VAT
    £169.92 per item
    £2.52 per m²
    ex. VAT
    £231.36 Save £27.46
    £203.90 per item
    £3.02 per m²
    inc. VAT
    £192.80 Save £22.88
    £169.92 per item
    £2.52 per m²
    ex. VAT
  • SOUDAL Soudatight LQ Paint On Airtight Membrane (White) - 4.5kg | Insulation Merchant
    Sale 10%
    SOUDATIGHT by SOUDAL

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

    £36.54 per item
    £8.12 per kg
    inc. VAT
    £30.45 per item
    £6.77 per kg
    ex. VAT
    £40.60 Save £4.06
    £36.54 per item
    £8.12 per kg
    inc. VAT
    £33.83 Save £3.38
    £30.45 per item
    £6.77 per kg
    ex. VAT