What is AAMA 501.2?
It all begins with an idea.
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.
Why do we need AAMA 501.2 testing?
It all begins with an idea.
In Australian commercial construction, water infiltration is one of the leading causes of costly building failures. To mitigate this risk, architects and contractors rely on stringent field testing standards — and one of the most important among them is AAMA 501.2.
Whether you're a builder, facade contractor, or building owner, understanding AAMA 501.2 can help you reduce liability, ensure code compliance, and protect your project from long-term moisture damage.
Common reasons for AAMA501.2 test failure.
It all begins with an idea.
We have carried out literally hundreds (more likely thousands at this point) of AAMA 501.2 tests at Facade Water Testing, and in our experience, the most commen failures are caused by the following defects:
Poor subsill end dam detailing/ installation.
Poor sealant detailing/ installation.
Missing backing rods or gaskets.
Hole in weatherline (vapour barrier, sarking etc.).
Incorrect fastener installation.
Installation not per manufacturer specifications.
Best Practices for Passing the AAMA 501.2 Test
It all begins with an idea.
Schedule testing before internal finishes are installed
Use experienced installers and third-party testers
Perform mock-up testing off-site if possible
Coordinate with the design team to verify drawings and details
Schedule testing before internal finishes are installed