All Airtightness Products

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All Airtightness Products

Browse airtightness membranes, tapes, sealants and accessories for reducing uncontrolled air leakage through the building envelope.

Suitable airtightness products can be used around joints, service penetrations and construction interfaces in new-build and renovation projects to help create a more controlled building envelope.

Frequently Asked Questions

  • What’s the difference between an airtightness membrane and a vapour control layer?

    An airtightness membrane limits uncontrolled air leakage through the building envelope, while a vapour control layer is primarily intended to manage the movement of water vapour. Some products can perform both functions.

  • Can the same airtightness products be used on timber-frame and masonry buildings?

    Some products work with both construction types, while others are designed for specific substrates. Check the manufacturer’s compatibility requirements before installation.

  • How can you fix a failed air-pressure test?

    Air leakage points should be identified and sealed before retesting. Common areas include service penetrations, membrane joints, windows, doors and junctions between different parts of the building envelope.