Passive Purple External — the fire-rated WRB barrier. Weather-resistive, airtight membrane for internal or external use.

Passives violettes Äußeres

Passive Purple External takes airtightness outside: a fire rated (Class B) façade waterproofing membrane that sprays, rollers or brushes onto sheathing and masonry, keeping weather out and air where it belongs. Available in purple, white, black and cream across 5kg and 10kg packs, with brush grades for the details. This collection adds the supporting cast — Passive Purple X, Retrofit Airtightness paints and Airtight Tape — so external junctions, reveals and penetrations get sealed as part of one continuous system.

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