AAMA501.2 Testing NATA Accredited

AAMA 501.2 Water Testing

Hose Testing for Installed Systems

The AAMA 501.2 test is designed for field testing of installed exterior fixed (non operable) wall systems—specifically storefronts, curtain walls, and sloped glazing—to evaluate their resistance to water penetration under simulated wind-driven rain conditions. It’s typically used as a quality assurance test during or shortly after installation, before internal finishes are applied.

For operable windows and doors, the appropriate standard is AAMA 502, which includes water penetration (ASTM E1105) tests. These are tailored to evaluate the performance of moving components under field conditions.

How the test is performed:

  • A representative section of the installed façade is chosen, typically including joints, sealants, and glazing details. Operable components (e.g. operable windows or doors) are excluded from this test (refer AAMA502 for the testing of operable windows and doors).
  • A calibrated hose nozzle is used, designed to deliver water at a pressure of 30–35 psi (minimum 25 psi if approved). The nozzle type and spray pattern must meet AAMA specifications.
  • Water is sprayed at the façade from a perpendicular, fixed distance (approximately 300 mm) in a slow, methodical sweep across joints, seals, and interfaces for a specified duration (typically 5 minutes per 1.5 linear metres).
  • The interior weatherline is closely monitored during and after the spray for any signs of water ingress, including tracking, staining, or pooling.
  • Any breaches are recorded with photographic evidence, location details, and remediation. A formal test report is issued to the client.

Why you need it

Detect Leaks Before They Become Problems

Protect Against Future Water Damage

Verify Workmanship & System Integrity

When to use it:

Developed by the American Architectural Manufacturers Association, this test replicates wind-driven rain conditions to ensure there are no leaks or failures in your building’s exterior envelope.

Unlike lab-based testing, AAMA 501.2 is conducted after installation but before project completion, making it a practical and reliable method for identifying issues in real-world conditions.

Get in touch

Contact us today to schedule your AAMA501.2 Testing NATA Accredited or request a quote.