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

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  • 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
  • pro clima | Insulation Merchant
    Sale 83%
    AEROSANA VISCONN FIBRE by Pro Clima

    Pro Clima Aerosanna Visconn Fibre-reinforced Spray/Paintable Airtight Sealant Membrane

    From £14.05 per item
    inc. VAT
    From £11.71 per item
    ex. VAT
    £86.88 Save £72.83
    From £14.05 per item
    inc. VAT
    £72.40 Save £60.69
    From £11.71 per item
    ex. VAT
  • STEICOmulti Renova Membrane - 50m x 1.5m | Insulation Merchant
    Sale 18%
    Spring Savings
    MULTI RENOVA by Steico

    STEICO Multi Renova Membrane - 50m x 1.5m

    £239.90 per item
    £3.19 per m²
    inc. VAT
    £199.92 per item
    £2.67 per m²
    ex. VAT
    £295.42 Save £55.52
    £239.90 per item
    £3.19 per m²
    inc. VAT
    £246.18 Save £46.27
    £199.92 per item
    £2.67 per m²
    ex. VAT
  • SIGA Majvest® 200 - Breather Membrane (Particularly for Closed Facade) | Insulation Merchant
    MAJVEST® by SIGA

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

    £195.45 per item
    £2.60 per m²
    inc. VAT
    £162.88 per item
    £2.17 per m²
    ex. VAT
    Save £-195.45
    £195.45 per item
    £2.60 per m²
    inc. VAT
    £0.00 Save £-162.88
    £162.88 per item
    £2.17 per m²
    ex. VAT
  • Pro Clima Solitex Plus Connect - Vapour Permeable Membrane + Pre-applied Tape (1.5m x 50m 75m²) | Insulation Merchant
    Sale

    5.0

    SOLITEX PLUS by Pro Clima

    Pro Clima Solitex Plus Connect - Vapour Permeable Membrane + Pre-applied Tape (1.5m x 50m 75m²)

    £338.30 per item
    £4.51 per m²
    inc. VAT
    £281.92 per item
    £3.76 per m²
    ex. VAT
    £344.16 Save £5.86
    £338.30 per item
    £4.51 per m²
    inc. VAT
    £286.80 Save £4.88
    £281.92 per item
    £3.76 per m²
    ex. VAT
  • DuPont™ AirGuard® Reflective - Vapour Control Layer - 1.5m x 50m | Insulation Merchant
    AIRGUARD® by DuPont - Performance Building Solutions

    DuPont™ AirGuard® Reflective - Vapour Control Layer - 1.5m x 50m

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  • SIGA Majcoat® 350 Diffusion-open Breathable Roof Membrane | Insulation Merchant
    Bat Friendly
    MAJCOAT® by SIGA

    SIGA Majcoat® 350 Diffusion-open Breathable "Bat-Safe" Roof Membrane

    £549.45 per item
    £10.97 per m²
    inc. VAT
    £457.88 per item
    £9.14 per m²
    ex. VAT
    Save £-549.45
    £549.45 per item
    £10.97 per m²
    inc. VAT
    £0.00 Save £-457.88
    £457.88 per item
    £9.14 per m²
    ex. VAT
  • ROTHOBLAAS Clima Control 105 (Variable Vapour Control Membrane) (1.5m x 50m)
    Internal Use
    CLIMA CONTROL by Rothoblaas

    ROTHOBLAAS Clima Control 105 (Variable Vapour Control Membrane) (1.5m x 50m)

    £176.31 per item
    £2.35 per m²
    inc. VAT
    £146.93 per item
    £1.96 per m²
    ex. VAT
    Save £-176.31
    £176.31 per item
    £2.35 per m²
    inc. VAT
    £0.00 Save £-146.93
    £146.93 per item
    £1.96 per m²
    ex. VAT
  • Pro Clima Solitex Adhero 3000 - Self Adhesive Vapour Permeable Membrane (1.5m X 30m) | Insulation Merchant
    SOLITEX by Pro Clima

    Pro Clima Solitex Adhero 3000 - Self Adhesive Vapour Permeable Membrane (1.5m X 30m)

    £414.48 per item
    £9.21 per m²
    inc. VAT
    £345.40 per item
    £7.68 per m²
    ex. VAT
    Save £-414.48
    £414.48 per item
    £9.21 per m²
    inc. VAT
    £0.00 Save £-345.40
    £345.40 per item
    £7.68 per m²
    ex. VAT
  • Pro Clima Solitex Fronta WA - Wall Lining Membrane (3m x 50m) | Insulation Merchant
    SOLITEX FRONTA WA by Pro Clima

    Pro Clima Solitex Fronta WA - Wall Lining Membrane (3m x 50m)

    £339.90 per item
    inc. VAT
    £283.25 per item
    ex. VAT
    Save £-339.90
    £339.90 per item
    inc. VAT
    £0.00 Save £-283.25
    £283.25 per item
    ex. VAT
  • SIGA Majcoat® 150 Breather Membrane - 1.5m x 50m (75m²) | Insulation Merchant
    MAJCOAT® by SIGA

    SIGA Majcoat® 150 Breather Membrane - 1.5m x 50m (75m²)

    £220.90 per item
    £2.94 per m²
    inc. VAT
    £184.08 per item
    £2.45 per m²
    ex. VAT
    Save £-220.90
    £220.90 per item
    £2.94 per m²
    inc. VAT
    £0.00 Save £-184.08
    £184.08 per item
    £2.45 per m²
    ex. VAT
  • SIGA Majvest® 200 SOB - Breather Membrane with Tape (Particularly for Closed Facade) | Insulation Merchant
    MAJVEST® by SIGA

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

    £218.65 per item
    £2.91 per m²
    inc. VAT
    £182.21 per item
    £2.43 per m²
    ex. VAT
    Save £-218.65
    £218.65 per item
    £2.91 per m²
    inc. VAT
    £0.00 Save £-182.21
    £182.21 per item
    £2.43 per m²
    ex. VAT
  • Pro Clima Solitex Fronta Humida - Wall Lining Membrane (1.5m x 50m) | Insulation Merchant
    SOLITEX FRONTA HUMIDA by Pro Clima

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

    £268.90 per item
    £3.58 per m²
    inc. VAT
    £224.08 per item
    £2.99 per m²
    ex. VAT
    Save £-268.90
    £268.90 per item
    £3.58 per m²
    inc. VAT
    £0.00 Save £-224.08
    £224.08 per item
    £2.99 per m²
    ex. VAT
  • Kingspan Nilvent Breather Membrane - 1.5m x 50m | Insulation Merchant
    by Kingspan

    Kingspan Nilvent Breather Membrane - 1.5m x 50m

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  • ROTHOBLAAS Clima Control 80 (Variable Vapour Control Membrane) (1.5m x 50m)
    Internal Use
    CLIMA CONTROL by Rothoblaas

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

    £151.12 per item
    £2.01 per m²
    inc. VAT
    £125.93 per item
    £1.68 per m²
    ex. VAT
    Save £-151.12
    £151.12 per item
    £2.01 per m²
    inc. VAT
    £0.00 Save £-125.93
    £125.93 per item
    £1.68 per m²
    ex. VAT
  • PROCTOR Wraptite® Self-adhesive Vapour Permeable Airtight Membrane - 1.5 x 50m | Insulation Merchant
    WRAPTITE® by A. Proctor Group

    PROCTOR Wraptite® Self-adhesive Vapour Permeable Airtight Membrane - 1.5 x 50m

    £874.90 per item
    £11.66 per m²
    inc. VAT
    £729.08 per item
    £9.72 per m²
    ex. VAT
    Save £-874.90
    £874.90 per item
    £11.66 per m²
    inc. VAT
    £0.00 Save £-729.08
    £729.08 per item
    £9.72 per m²
    ex. VAT
  • DuPont™ AirGuard® Control - Vapour Control Layer - 1.5 x 50m | Insulation Merchant
    AIRGUARD® by DuPont - Performance Building Solutions

    DuPont™ AirGuard® Control - Vapour Control Layer - 1.5 x 50m

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  • ROTHOBLAAS Traspir 150 (Breather Membrane) [BBA]
    External Use
    TRASPIR by Rothoblaas

    ROTHOBLAAS Traspir 150 (Breather Membrane) [BBA]

    From £1.00 per item
    £0.01 per m²
    inc. VAT
    From £0.83 per item
    £0.01 per m²
    ex. VAT
    Save £-1.00
    From £1.00 per item
    £0.01 per m²
    inc. VAT
    £0.00 Save £-0.83
    From £0.83 per item
    £0.01 per m²
    ex. VAT
  • DuPont™ Tyvek® Supro - Breather Roof Membrane - 50m x 1.5m (75m²) | Insulation Merchant
    TYVEK® by DuPont - Performance Building Solutions

    DuPont™ Tyvek® Supro - Breather Roof Membrane - 50m x 1.5m (75m²)

    Looking for a price?

    Add to a quote for our best rate.