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 Dasatop - 1.5m x 50m (75m²) Pro Clima Dasatop - 1.5m x 50m (75m²)
    Sale 10%
    DASATOP by Pro Clima

    PC/DT

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

    £197.90
    £2.63 per m²
    £164.92 ex. VAT
    £2.20 per m²
    £197.90
    £2.63 per m²
    £219.96 you save £22.06
    £164.92 ex. VAT
    £2.20 per m²
    £183.30 you save £18.38
  • Pro Clima Constivap 2.3 Plus - 1.5m x 50m Pro Clima Constivap 2.3 Plus - 1.5m x 50m
    Sale 10%
    CONSTIVAP by Pro Clima

    PC/CV2350

    Pro Clima Constivap 2.3 Plus - 1.5m x 50m

    £152.60
    £127.17 ex. VAT
    £152.60
    £170.28 you save £17.68
    £127.17 ex. VAT
    £141.90 you save £14.73
  • 3m Pro Clima Intello Plus - Vapour Check Membrane (50m) | Insulation Merchant 3m Pro Clima Intello Plus - Vapour Check Membrane (50m) | Insulation Merchant
    Sale 10%
    INTELLO PLUS by Pro Clima

    PC/IP5030

    3m Pro Clima Intello Plus - Vapour Check Membrane (50m)

    £535.90
    £3.57 per m²
    £446.58 ex. VAT
    £2.98 per m²
    £535.90
    £3.57 per m²
    £598.20 you save £62.30
    £446.58 ex. VAT
    £2.98 per m²
    £498.50 you save £51.92
  • Pro Clima Solitex Plus Connect - Vapour Permeable Membrane + Pre-applied Tape (1.5m x 50m 75m²) Pro Clima Solitex Plus Connect - Vapour Permeable Membrane + Pre-applied Tape (1.5m x 50m 75m²)
    Sale 1%
    SOLITEX PLUS by Pro Clima

    PC/SPC

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

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

    TY/AGREF-5015

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

    £170.90
    £2.27 per m²
    £142.42 ex. VAT
    £1.90 per m²
    £170.90
    £2.27 per m²
    you save £-170.90
    £142.42 ex. VAT
    £1.90 per m²
    £0.00 you save £-142.42
  • Kingspan Nilvent Breather Membrane - 1.5m x 50m Kingspan Nilvent Breather Membrane - 1.5m x 50m
    by Kingspan

    KING/NIL-1550

    Kingspan Nilvent Breather Membrane - 1.5m x 50m

    £146.90
    £1.95 per m²
    £122.42 ex. VAT
    £1.63 per m²
    £146.90
    £1.95 per m²
    you save £-146.90
    £122.42 ex. VAT
    £1.63 per m²
    £0.00 you save £-122.42
  • STEICOmulti Renova Membrane - 50m x 1.5m
    MULTI RENOVA by Steico

    STE/REN-5015

    STEICOmulti Renova Membrane - 50m x 1.5m

    £284.90
    £3.79 per m²
    £237.42 ex. VAT
    £3.17 per m²
    £284.90
    £3.79 per m²
    you save £-284.90
    £237.42 ex. VAT
    £3.17 per m²
    £0.00 you save £-237.42
  • Pro Clima Aerosanna Visconn Fibre-reinforced Spray/Paintable Airtight Sealant Membrane
    Sale 83%
    AEROSANA VISCONN FIBRE by Pro Clima

    PC/AVF5B

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

    From £14.05
    From £11.71 ex. VAT
    From £14.05
    £86.88 you save £72.83
    From £11.71 ex. VAT
    £72.40 you save £60.69
  • SIGA Majcoat® 150 Breather Membrane - 1.5m x 50m (75m²) SIGA Majcoat® 150 Breather Membrane - 1.5m x 50m (75m²)
    MAJCOAT® 150 by SIGA

    SIG/MC150-15

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

    £220.90
    £2.94 per m²
    £184.08 ex. VAT
    £2.45 per m²
    £220.90
    £2.94 per m²
    you save £-220.90
    £184.08 ex. VAT
    £2.45 per m²
    £0.00 you save £-184.08
  • PROCTOR Wraptite Self-adhesive Vapour Permeable Airtight Membrane - 1.5 x 50m PROCTOR Wraptite Self-adhesive Vapour Permeable Airtight Membrane - 1.5 x 50m
    WRAPTITE® by A. Proctor Group

    PROC/WRATITE-50

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

    £944.90
    £12.59 per m²
    £787.42 ex. VAT
    £10.50 per m²
    £944.90
    £12.59 per m²
    you save £-944.90
    £787.42 ex. VAT
    £10.50 per m²
    £0.00 you save £-787.42
  • PAVATEX LDB 0.02 Permeable Membrane 50m x 1.5m PAVATEX LDB 0.02 Permeable Membrane 50m x 1.5m
    Sale 20%
    PAVATEX MEMBRANE by Pavatex

    PAV/LDB-5015

    PAVATEX LDB 0.02 Permeable Membrane 50m x 1.5m

    £168.90
    £140.75 ex. VAT
    £168.90
    £212.90 you save £44.00
    £140.75 ex. VAT
    £177.42 you save £36.67
  • Pro Clima Solitex Fronta WA - Wall Lining Membrane (3m x 50m) Pro Clima Solitex Fronta WA - Wall Lining Membrane (3m x 50m)
    SOLITEX FRONTA WA by Pro Clima

    PC/FWA30050

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

    £339.90
    £283.25 ex. VAT
    £339.90
    you save £-339.90
    £283.25 ex. VAT
    £0.00 you save £-283.25
  • SIGA Wetguard® 200 SA - 390mm x 50m SIGA Wetguard® 200 SA - 390mm x 50m
    WETGUARD® by SIGA

    SIG/WG200S-39

    SIGA Wetguard® 200 SA - 390mm x 50m

    £202.70
    £10.39 per m²
    £168.92 ex. VAT
    £8.66 per m²
    £202.70
    £10.39 per m²
    you save £-202.70
    £168.92 ex. VAT
    £8.66 per m²
    £0.00 you save £-168.92
  • SIGA Majvest® 200 SOB - Breather Membrane with Tape (Particularly for Closed Facade) SIGA Majvest® 200 SOB - Breather Membrane with Tape (Particularly for Closed Facade)
    MAJVEST® 200 SOB by SIGA

    SIG/MV200S

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

    £218.65
    £2.91 per m²
    £182.21 ex. VAT
    £2.43 per m²
    £218.65
    £2.91 per m²
    you save £-218.65
    £182.21 ex. VAT
    £2.43 per m²
    £0.00 you save £-182.21
  • Pro Clima Solitex Fronta Humida - Wall Lining Membrane (1.5m x 50m) Pro Clima Solitex Fronta Humida - Wall Lining Membrane (1.5m x 50m)
    SOLITEX FRONTA HUMIDA by Pro Clima

    PC/FH15050

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

    £268.90
    £3.58 per m²
    £224.08 ex. VAT
    £2.99 per m²
    £268.90
    £3.58 per m²
    you save £-268.90
    £224.08 ex. VAT
    £2.99 per m²
    £0.00 you save £-224.08
  • DuPont™ AirGuard® Control - Vapour Control Layer - 1.5 x 50m
    AIRGUARD® by DuPont - Performance Building Solutions

    TY/AG-50x1.5

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

    £176.90
    £2.35 per m²
    £147.42 ex. VAT
    £1.97 per m²
    £176.90
    £2.35 per m²
    you save £-176.90
    £147.42 ex. VAT
    £1.97 per m²
    £0.00 you save £-147.42
  • Pro Clima Solitex Adhero 3000 - Self Adhesive Vapour Permeable Membrane (1.5m X 30m) Pro Clima Solitex Adhero 3000 - Self Adhesive Vapour Permeable Membrane (1.5m X 30m)
    SOLITEX by Pro Clima

    PC/SEA

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

    £414.48
    £9.21 per m²
    £345.40 ex. VAT
    £7.68 per m²
    £414.48
    £9.21 per m²
    you save £-414.48
    £345.40 ex. VAT
    £7.68 per m²
    £0.00 you save £-345.40
  • SIGA Wetguard® 200 SA - 1560mm x 50m SIGA Wetguard® 200 SA - 1560mm x 50m
    WETGUARD® by SIGA

    SIG/WG200S-156

    SIGA Wetguard® 200 SA - 1560mm x 50m

    £764.35
    £9.79 per m²
    £636.96 ex. VAT
    £8.17 per m²
    £764.35
    £9.79 per m²
    you save £-764.35
    £636.96 ex. VAT
    £8.17 per m²
    £0.00 you save £-636.96
  • Pro Clima Aerosanna Fleece Pro Clima Aerosanna Fleece
    Sale 5%
    AEROSANA FLEECE by Pro Clima

    PC/AVFL

    Pro Clima Aerosanna Fleece

    £17.67
    £0.70 per LM (linear metre)
    £14.73 ex. VAT
    £0.59 per LM (linear metre)
    £17.67
    £0.70 per LM (linear metre)
    £18.60 you save £0.93
    £14.73 ex. VAT
    £0.59 per LM (linear metre)
    £15.50 you save £0.78
  • PROCTOR Procheck® A2 FR Vapour & Airtight Membrane - 50m x 1.2m
    PROCHECK® by A. Proctor Group

    PROC/PCA2

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

    £462.30
    £7.70 per m²
    £385.25 ex. VAT
    £6.42 per m²
    £462.30
    £7.70 per m²
    you save £-462.30
    £385.25 ex. VAT
    £6.42 per m²
    £0.00 you save £-385.25