Perm A Barrier NPS (non-permeable, primerless)
Perm-A-Barrier® NPS (Non Permeable Sheet) is an NFPA 285 compliant, primerless self-adhering vapour impermeable air barrier membrane. Its specially designed adhesive eliminates the need to prime the surface of most construction materials, saving installation time and material cost. Perm-A-Barrier® NPS provides superior protection against the damaging effects of air and water ingress on building structures.
- Primer-less self-adhered sheet—reduces installation time by up to 40%
- Fire Resistant—meets NFPA 285 as part o various wall assemblies with foam plastic insulation
- Fully bonded—transmits wind loads directly to the substrate
- Waterproof and virtually impermeable to moisture—virtually impermeable to the passage of liquid water and vapour
- Air tight— Protects against air passage and associated energy losses.
- Meets ASTM E2357 standard as required by IECC 2012
- Flexible—accommodates minor settlement and shrinkage movement
- Controlled thickness—factory made sheet ensures constant, non-variable site application
- Aggressive, conformable adhesive—allows self-sealing around mechanical fasteners
- Wide application window— primerless application at surface and ambient temperatures of 25°F (-4°C) and above.
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