Collection: Retrofit Vapour Barrier Membrane
Airtightness for buildings that already exist. Our Retrofit Airtightness paints go on by brush (5kg) or spray/roller (10kg) to form a continuous vapour barrier membrane over existing walls and ceilings — no stripping back to the frame, no re-boarding. Seal junctions and penetrations with Passivhaus Airtight Sealant and Airtight Tape as part of the same system, and bring an older building's air leakage down without gutting it. Made for EnerPHit, retrofit schemes and every draughty semi in between.
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IM Fleece Airtightness Tape for Windows & Junctions
Short spec • 2.0 kg
Regular price From £40.00 GBPRegular priceSale price From £40.00 GBP -
Regular price From £12.00 GBPRegular price
Sale price From £12.00 GBP -
Passive Purple Retrofit - Retrofit Airtightness Brush Applied Paint (5kg)
Short spec • 5.0 kg
Regular price £55.99 GBPRegular priceSale price £55.99 GBP -
Passive Purple Retrofit - Retrofit Airtightness Spray/Roller Paint (10kg)
Short spec • 10.0 kg
PassivhausRegular price £119.99 GBPRegular priceSale price £119.99 GBP

