Airtight & Windtight Systems

Airtightness and Widtightness are essential 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 helps minimize heat loss or gain and eliminates drafts ensuring a consistent indoor temperature. It also helps eliminate the entry of pollutants, allergens, and moisture, resulting in a healthier indoor environment. 

Shop our range of airtight membranes, tapes, grommets, and sealants.

Airtight and windtight systems | Insulation Merchant

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Airtight & Windtight Membranes

Airtight & Windtight Membranes

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Airtight and windtight systems | Insulation Merchant

Airtight & Windtight Tapes and Sealants

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Liquid Airtight Membranes

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Airtight Grommets

Airtight Grommets

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Expanding Tapes

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Pro Clima

Pro Clima

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SIGA

SIGA

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  • Airtight and windtight systems | Insulation Merchant 60mm Pro Clima Tescon Vana - Airtight Tape (30m) | Insulation Merchant
    Sale 1%
    TESCON by Pro Clima

    PC/TV

    60mm Pro Clima Tescon Vana - Airtight Tape (30m)

    £30.25
    £1.00 per LM (linear metre)
    £25.21 ex. VAT
    £0.84 per LM (linear metre)
    £30.25
    £1.00 per LM (linear metre)
    £30.84 you save £0.59
    £25.21 ex. VAT
    £0.84 per LM (linear metre)
    £25.70 you save £0.49
  • Pro Clima Contega Solido SL80 (Internal Single-sIded Corner Adhesive Tape) - 80mm x 30m Pro Clima Contega Solido SL80 (Internal Single-sIded Corner Adhesive Tape) - 80mm x 30m
    Sale 2%
    CONTEGA SOLIDO SL by Pro Clima

    PC/SOLSL80

    Pro Clima Contega Solido SL80 (Internal Single-sIded Corner Adhesive Tape) - 80mm x 30m

    £48.30
    £1.61 per LM (linear metre)
    £40.25 ex. VAT
    £1.34 per LM (linear metre)
    £48.30
    £1.61 per LM (linear metre)
    £49.56 you save £1.26
    £40.25 ex. VAT
    £1.34 per LM (linear metre)
    £41.30 you save £1.05
  • Pro Clima Tescon Sprimer Spray Can Primer Pro Clima Tescon Sprimer Spray Can Primer
    Sale 1%
    TESCON by Pro Clima

    PC/TS75

    Pro Clima Tescon Sprimer Spray Can Primer

    From £13.90
    From £11.58 ex. VAT
    From £13.90
    £14.12 you save £0.22
    From £11.58 ex. VAT
    £11.77 you save £0.18
  • Pro Clima Orcon F - Flexible airtight solid acrylic sealant (310ml Cartridge) Pro Clima Orcon F - Flexible airtight solid acrylic sealant (310ml Cartridge)
    Sale 4%
    ORCON F by Pro Clima

    PC/ORC

    Pro Clima Orcon F - Flexible airtight solid acrylic sealant (310ml Cartridge)

    £8.95
    £1.49 per m
    £7.46 ex. VAT
    £1.24 per m
    £8.95
    £1.49 per m
    £9.36 you save £0.41
    £7.46 ex. VAT
    £1.24 per m
    £7.80 you save £0.34
  • Pro Clima Intello Plus - Vapour Check Membrane | Insulation Merchant Pro Clima Intello Plus - Vapour Check Membrane | Tescon Vana | Insulation Merchant
    Sale 10%
    INTELLO PLUS by Pro Clima

    PC/IP50

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

    £268.20
    £3.57 per m²
    £223.50 ex. VAT
    £2.98 per m²
    £268.20
    £3.57 per m²
    £299.16 you save £30.96
    £223.50 ex. VAT
    £2.98 per m²
    £249.30 you save £25.80
  • Pro Clima Solitex Plus - Vapour Permeable Membrane (1.5m x 50m / 75m²) Pro Clima Solitex Plus - Vapour Permeable Membrane (1.5m x 50m / 75m²)
    Sale 10%
    SOLITEX PLUS by Pro Clima

    PC/SP1

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

    £265.20
    £3.53 per m²
    £221.00 ex. VAT
    £2.95 per m²
    £265.20
    £3.53 per m²
    £295.80 you save £30.60
    £221.00 ex. VAT
    £2.95 per m²
    £246.50 you save £25.50
  • Pro Clima | Intello Plus | Insulation Merchant Pro Clima | Intello Plus | Teson Vana | Insulation Merchant
    Sale 10%
    INTELLO PLUS by Pro Clima

    PC/IP20

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

    £111.50
    £3.71 per m²
    £92.92 ex. VAT
    £3.10 per m²
    £111.50
    £3.71 per m²
    £124.44 you save £12.94
    £92.92 ex. VAT
    £3.10 per m²
    £103.70 you save £10.78
  • Pro Clima Tescon Profil (Corner Adhesive Tape) - 30m x 60mm (12/48mm Split) Pro Clima Tescon Profil (Corner Adhesive Tape) - 30m x 60mm (12/48mm Split)
    Sale 2%
    TESCON by Pro Clima

    PC/TVP

    Pro Clima Tescon Profil (Corner Adhesive Tape) - 30m x 60mm (12/48mm Split)

    £38.20
    £1.27 per LM (linear metre)
    £31.83 ex. VAT
    £1.06 per LM (linear metre)
    £38.20
    £1.27 per LM (linear metre)
    £39.12 you save £0.92
    £31.83 ex. VAT
    £1.06 per LM (linear metre)
    £32.60 you save £0.77
  • Pro Clima Tescon Invis - 60mm x 30m Pro Clima Tescon Invis - 60mm x 30m
    Sale 2%
    TESCON by Pro Clima

    PC/TINVIS

    Pro Clima Tescon Invis - 60mm x 30m

    £28.30
    £23.58 ex. VAT
    £28.30
    £29.04 you save £0.74
    £23.58 ex. VAT
    £24.20 you save £0.62
  • Pro Clima DA (Small Handy Roll) - Membrane (1.5m x 20m / 30m²) Pro Clima DA (Small Handy Roll) - Membrane (1.5m x 20m / 30m²)
    Sale 1%
    DA by Pro Clima

    PC/DA20

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

    £88.90
    £2.96 per m²
    £74.08 ex. VAT
    £2.47 per m²
    £88.90
    £2.96 per m²
    £90.00 you save £1.10
    £74.08 ex. VAT
    £2.47 per m²
    £75.00 you save £0.92
  • Pro Clima Solitex Plus (Small Handy Roll) - Vapour Permeable Membrane (1.5m x 15m / 22.5m²) Pro Clima Solitex Plus (Small Handy Roll) - Vapour Permeable Membrane (1.5m x 15m / 22.5m²)
    Sale 10%
    SOLITEX PLUS by Pro Clima

    PC/SP2

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

    £97.20
    £4.32 per m²
    £81.00 ex. VAT
    £3.60 per m²
    £97.20
    £4.32 per m²
    £108.48 you save £11.28
    £81.00 ex. VAT
    £3.60 per m²
    £90.40 you save £9.40
  • Pro Clima Tescon No. 1 Sealing Adhesive Tape - 60mm x 30m Pro Clima Tescon No. 1 Sealing Adhesive Tape - 60mm x 30m
    Sale 2%
    TESCON by Pro Clima

    PC/TES1

    Pro Clima Tescon No. 1 Sealing Adhesive Tape - 60mm x 30m

    £34.50
    £1.91 per m²
    £28.75 ex. VAT
    £1.60 per m²
    £34.50
    £1.91 per m²
    £35.40 you save £0.90
    £28.75 ex. VAT
    £1.60 per m²
    £29.50 you save £0.75
  • Pro Clima DA - Membrane (1.5m x 50m / 75m²) Pro Clima DA - Membrane (1.5m x 50m / 75m²)
    DA by Pro Clima

    PC/DA

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

    £201.50
    £2.68 per m²
    £167.92 ex. VAT
    £2.24 per m²
    £201.50
    £2.68 per m²
    you save £-201.50
    £167.92 ex. VAT
    £2.24 per m²
    £0.00 you save £-167.92
  • 60mm Pro Clima Uni Tape - Airtight Tape (30m) | Insulation Merchant 60mm Pro Clima Uni Tape - Airtight Tape (30m) | Insulation Merchant
    Sale 7%
    UNI TAPE by Pro Clima

    PC/T

    60mm Pro Clima Uni Tape - Airtight Tape (30m)

    £21.96
    £0.73 per LM (linear metre)
    £18.30 ex. VAT
    £0.61 per LM (linear metre)
    £21.96
    £0.73 per LM (linear metre)
    £23.64 you save £1.68
    £18.30 ex. VAT
    £0.61 per LM (linear metre)
    £19.70 you save £1.40
  • Pro Clima Tescon Primer RP (1L bottle) Pro Clima Tescon Primer RP (1L bottle)
    Sale 7%
    TESCON by Pro Clima

    PC/TPRP1

    Pro Clima Tescon Primer RP (1L bottle)

    £21.96
    £0.29 per LM (linear metre)
    £18.30 ex. VAT
    £0.24 per LM (linear metre)
    £21.96
    £0.29 per LM (linear metre)
    £23.76 you save £1.80
    £18.30 ex. VAT
    £0.24 per LM (linear metre)
    £19.80 you save £1.50
  • 100mm Pro Clima Tescon Vana - Sealing Adhesive Tape (30m) | Insulation Merchant 100mm Pro Clima Tescon Vana - Sealing Adhesive Tape (30m) | Insulation Merchant
    Sale 2%
    TESCON by Pro Clima

    PC/TV-100

    100mm Pro Clima Tescon Vana - Sealing Adhesive Tape (30m)

    £52.90
    £1.76 per LM (linear metre)
    £44.08 ex. VAT
    £1.47 per LM (linear metre)
    £52.90
    £1.76 per LM (linear metre)
    £54.36 you save £1.46
    £44.08 ex. VAT
    £1.47 per LM (linear metre)
    £45.30 you save £1.22
  • 60mm SIGA Sicrall® 60 - VCL Jointing Airtight Tape (40m) | Insulation Merchant 60mm SIGA Sicrall® 60 - VCL Jointing Airtight Tape (40m) | Insulation Merchant
    SICRALL® 60 by SIGA

    SIG/S60

    60mm SIGA Sicrall® 60 - VCL Jointing Airtight Tape (40m)

    £36.20
    £0.90 per LM (linear metre)
    £30.17 ex. VAT
    £0.75 per LM (linear metre)
    £36.20
    £0.90 per LM (linear metre)
    you save £-36.20
    £30.17 ex. VAT
    £0.75 per LM (linear metre)
    £0.00 you save £-30.17
  • Pro Clima Contega Solido EXO80 (External Single-sIded Corner Adhesive Tape) - 30m x 80mm Pro Clima Contega Solido EXO80 (External Single-sIded Corner Adhesive Tape) - 30m x 80mm
    Sale 2%
    CONTEGA SOLIDO EXO by Pro Clima

    PC/SOLEXO80

    Pro Clima Contega Solido EXO80 (External Single-sIded Corner Adhesive Tape) - 30m x 80mm

    £48.30
    £1.61 per LM (linear metre)
    £40.25 ex. VAT
    £1.34 per LM (linear metre)
    £48.30
    £1.61 per LM (linear metre)
    £49.56 you save £1.26
    £40.25 ex. VAT
    £1.34 per LM (linear metre)
    £41.30 you save £1.05
  • Pro Clima Pressfix Tool
    PRESSFIX by Pro Clima

    PC/P

    Pro Clima Pressfix Tool

    £3.90
    £3.25 ex. VAT
    £3.90
    you save £-3.90
    £3.25 ex. VAT
    £0.00 you save £-3.25
  • Pro Clima Solitex Fronta WA - Wall Lining Membrane (1.5m x 50m) Pro Clima Solitex Fronta WA - Wall Lining Membrane (1.5m x 50m)
    SOLITEX FRONTA WA by Pro Clima

    PC/FWA15050

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

    £169.90
    £141.58 ex. VAT
    £169.90
    you save £-169.90
    £141.58 ex. VAT
    £0.00 you save £-141.58