What is AAMA 501.2?

AAMA 501.2, developed by the American Architectural Manufacturers Association, is a standardised field test used to evaluate the water resistance of installed curtain walls, storefronts, and sloped glazing systems.

In Australia, it is most commonly carried out as a onsite weather tightness verification method, usually in order to satisfy the F3P1 weatherproofing review and report (formerly FP1.4 to NCC 2019).

Purpose: To determine whether water penetrates the assembly at any joint, seal, or connection under dynamic pressure.