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 & Windtight Systems

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Airtight & Windtight Membranes

Airtight & Windtight Membranes

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

Airtight & Windtight Tapes and Sealants

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Pro Clima Aerosanna Visconn Spray/Paintable Airtight Sealant Membrane | Insulation Merchant

Liquid Airtight Membranes

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Airtight Grommets

Airtight Grommets

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Pro Clima Contega Fiden Exo (Expansion Joint Tape) - Joint 5-10mm (Roll 20mm x 5.6m) | Insulation Merchant

Expanding Tapes

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Pro Clima

Pro Clima

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Rothoblaas

Rothoblaas

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SIGA

SIGA

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Learn more from our blogs

Insulating Ground Floors

To undertake a ground floor thermal insulation upgrade it is first important to establish if it is possible or not. In domestic buildings, broadly speaking, there are two styles of floor type - solid ground floor and suspended floor, each with its pros and cons.

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Showing 172 of 172 products
  • Pro Clima Contega Solido SL80 (Internal Single-sIded Corner Adhesive Tape) - 80mm x 30m | Insulation Merchant
    Sale

    5.0

    CONTEGA SOLIDO SL by Pro Clima

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

    £48.30 per item
    £1.61 per LM (linear metre)
    inc. VAT
    £40.25 per item
    £1.34 per LM (linear metre)
    ex. VAT
    £49.56 Save £1.26
    £48.30 per item
    £1.61 per LM (linear metre)
    inc. VAT
    £41.30 Save £1.05
    £40.25 per item
    £1.34 per LM (linear metre)
    ex. VAT
  • Pro Clima Tescon Sprimer Spray Can Primer | Insulation Merchant
    Sale

    5.0

    TESCON by Pro Clima

    Pro Clima Tescon Sprimer Spray Can Primer

    From £13.90 per item
    inc. VAT
    From £11.58 per item
    ex. VAT
    £14.12 Save £0.22
    From £13.90 per item
    inc. VAT
    £11.77 Save £0.18
    From £11.58 per item
    ex. VAT
  • Pro Clima Orcon F - Flexible airtight solid acrylic sealant (310ml Cartridge) | Insulation Merchant
    Sale 4%
    ORCON F by Pro Clima

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

    £8.95 per item
    £1.49 per m
    inc. VAT
    £7.46 per item
    £1.24 per m
    ex. VAT
    £9.36 Save £0.41
    £8.95 per item
    £1.49 per m
    inc. VAT
    £7.80 Save £0.34
    £7.46 per item
    £1.24 per m
    ex. VAT
  • 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 Tescon Invis - 60mm x 30m | Insulation Merchant
    Sale

    5.0

    TESCON by Pro Clima

    Pro Clima Tescon Invis - 60mm x 30m

    £28.30 per item
    £0.94 per LM (linear metre)
    inc. VAT
    £23.58 per item
    £0.79 per LM (linear metre)
    ex. VAT
    £29.04 Save £0.74
    £28.30 per item
    £0.94 per LM (linear metre)
    inc. VAT
    £24.20 Save £0.62
    £23.58 per item
    £0.79 per LM (linear metre)
    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 Tescon Profil (Corner Adhesive Tape) - 30m x 60mm (12/48mm Split) | Insulation Merchant
    Sale

    5.0

    TESCON by Pro Clima

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

    £38.20 per item
    £1.27 per LM (linear metre)
    inc. VAT
    £31.83 per item
    £1.06 per LM (linear metre)
    ex. VAT
    £39.12 Save £0.92
    £38.20 per item
    £1.27 per LM (linear metre)
    inc. VAT
    £32.60 Save £0.77
    £31.83 per item
    £1.06 per LM (linear metre)
    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 Tescon No. 1 Sealing Adhesive Tape - 60mm x 30m | Insulation Merchant
    Sale

    5.0

    TESCON by Pro Clima

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

    £34.50 per item
    £1.91 per m²
    inc. VAT
    £28.75 per item
    £1.60 per m²
    ex. VAT
    £35.40 Save £0.90
    £34.50 per item
    £1.91 per m²
    inc. VAT
    £29.50 Save £0.75
    £28.75 per item
    £1.60 per m²
    ex. VAT
  • 60mm Pro Clima Uni Tape - Airtight Tape (30m) | Insulation Merchant
    Sale 7%
    UNI TAPE by Pro Clima

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

    £21.96 per item
    £0.73 per LM (linear metre)
    inc. VAT
    £18.30 per item
    £0.61 per LM (linear metre)
    ex. VAT
    £23.64 Save £1.68
    £21.96 per item
    £0.73 per LM (linear metre)
    inc. VAT
    £19.70 Save £1.40
    £18.30 per item
    £0.61 per LM (linear metre)
    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 Tescon Primer RP (1L bottle) | Insulation Merchant
    Sale 7%
    TESCON by Pro Clima

    Pro Clima Tescon Primer RP (1L bottle)

    £21.96 per item
    £0.29 per LM (linear metre)
    inc. VAT
    £18.30 per item
    £0.24 per LM (linear metre)
    ex. VAT
    £23.76 Save £1.80
    £21.96 per item
    £0.29 per LM (linear metre)
    inc. VAT
    £19.80 Save £1.50
    £18.30 per item
    £0.24 per LM (linear metre)
    ex. VAT
  • 60mm SIGA Sicrall® 60 - VCL Jointing Airtight Tape (40m) | Insulation Merchant
    SICRALL® by SIGA

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

    £37.40 per item
    £0.93 per LM (linear metre)
    inc. VAT
    £31.17 per item
    £0.78 per LM (linear metre)
    ex. VAT
    Save £-37.40
    £37.40 per item
    £0.93 per LM (linear metre)
    inc. VAT
    £0.00 Save £-31.17
    £31.17 per item
    £0.78 per LM (linear metre)
    ex. VAT
  • Pro Clima Pressfix Tool | Insulation Merchant

    5.0

    PRESSFIX by Pro Clima

    Pro Clima Pressfix Tool

    £3.90 per item
    inc. VAT
    £3.25 per item
    ex. VAT
    Save £-3.90
    £3.90 per item
    inc. VAT
    £0.00 Save £-3.25
    £3.25 per item
    ex. VAT
  • Pro Clima Contega Solido EXO80 (External Single-sIded Corner Adhesive Tape) - 30m x 80mm | Insulation Merchant
    Sale

    5.0

    CONTEGA SOLIDO EXO by Pro Clima

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

    £48.30 per item
    £1.61 per LM (linear metre)
    inc. VAT
    £40.25 per item
    £1.34 per LM (linear metre)
    ex. VAT
    £49.56 Save £1.26
    £48.30 per item
    £1.61 per LM (linear metre)
    inc. VAT
    £41.30 Save £1.05
    £40.25 per item
    £1.34 per LM (linear metre)
    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 Rissan® 60 VCL & Jointing Airtightness Tape - 60mm x 25m | Insulation Merchant
    RISSAN® by SIGA

    SIGA Rissan® 60 VCL & Jointing Airtightness Tape - 60mm x 25m

    £28.40 per item
    £1.13 per LM (linear metre)
    inc. VAT
    £23.67 per item
    £0.95 per LM (linear metre)
    ex. VAT
    Save £-28.40
    £28.40 per item
    £1.13 per LM (linear metre)
    inc. VAT
    £0.00 Save £-23.67
    £23.67 per item
    £0.95 per LM (linear metre)
    ex. VAT
  • Pro Clima Contega Solido SL100 (Internal Single-sIded Corner Adhesive Tape) - 100mm x 30m | Insulation Merchant
    Sale
    CONTEGA SOLIDO SL by Pro Clima

    Pro Clima Contega Solido SL100 (Internal Single-sIded Corner Adhesive Tape) - 100mm x 30m

    £60.40 per item
    £2.01 per LM (linear metre)
    inc. VAT
    £50.33 per item
    £1.68 per LM (linear metre)
    ex. VAT
    £62.04 Save £1.64
    £60.40 per item
    £2.01 per LM (linear metre)
    inc. VAT
    £51.70 Save £1.37
    £50.33 per item
    £1.68 per LM (linear metre)
    ex. VAT