The Complete External Airtight and Weatherproof Facade Kit
Wrapping a building’s facade so it is airtight, weatherproof and fire-rated in one system means covering the open areas, the details and the prep together — because gaps between separate products are where facades fail.
The problem with layering separate products
Sourcing external membrane, detailing products and prep separately risks gaps in the system and more interfaces that can fail. A facade has to handle air, wind-driven rain and fire performance at once — ideally from one coordinated build-up.
The solution: the External Bundle
The Passive Purple External Bundle brings together everything to make a facade airtight, weatherproof and fire-rated — the membrane plus the detailing and prep — in a single kit for spray or brush application.
What it covers
- External airtight, weatherproof, vapour-open membrane
- Brush grade for junction and reveal detailing
- Prep and primer for the substrate
Benefits
- Complete external system in one bundle
- Airtight, weatherproof and fire-rated
- Fewer gaps, more consistent results
Frequently asked questions
Spray or brush? Spray the open areas, brush the details — the bundle suits both.
Is it suitable for re-cladding? Yes — it’s designed for external new-build and retrofit/re-cladding work.
Compare approaches in Liquid Airtight Membranes vs Parge Coating.