AIR BARRIER C3 is a ready-to-use, class 3 waterproof air barrier membrane. It is liquid-applied directly to a variety of approved substrates and will function as a vertical above-grade waterproof air barrier when properly detailed with LATICRETE® Flashing Sealant or LATAPOXY® Waterproof Flashing Mortar.

This non-toxic, water-based, liquid formulation applies seamlessly and does not tear or lose its effectiveness with exposure to weather during construction or while in service.

An Air Barrier Association of America (ABAA) evaluated material, Air Barrier C3 can be used directly over primary sheathing, concrete, and concrete masonry unit (CMU) and functions as a primary control layer in the MVIS® wall assembly system.