Water Penetration Testing

ASTM E1105 and AAMA 502 and 503

At Building Enclosure Forensics LLC, we specialize in industry standard water penetration testing to evaluate the performance of windows, doors, curtain walls, and exterior wall systems. Using proven testing methods such as ASTM E1105 and AAMA 502 and 503, we help identify leaks, installation deficiencies, and system failures before they lead to costly damage.

ASTM E1105 Testing

ASTM E1105 is a field test used to determine the resistance of installed windows, curtain walls, and doors to water penetration under controlled conditions. This test simulates wind driven rain by applying a calibrated spray of water to the exterior surface while simultaneously creating a pressure differential across the assembly.

This method allows us to replicate real world weather conditions and observe how the system performs under stress. During testing, our team carefully monitors for any water intrusion beyond the plane of the assembly, documenting findings with detailed reports, photos, and video.

ASTM E1105 is commonly used for

  • Diagnostic investigations of leaks

  • Quality assurance testing on new construction

  • Verification of installation performance

  • Litigation and expert witness support

AAMA 502 and 503 Testing

AAMA 502 and AAMA 503 are quality assurance and diagnostic testing standards specifically focused on installed fenestration systems.

AAMA 502 is typically used for new construction and evaluates whether installed windows and doors meet expected performance levels compared to their laboratory ratings. It is often required as part of project specifications to ensure proper installation.

AAMA 503 is a more targeted diagnostic test used to investigate specific problem areas or known leaks. It applies a higher pressure differential over a smaller area, allowing us to isolate failures and pinpoint exact sources of water intrusion.

These standards are ideal for

  • Post installation quality assurance

  • Troubleshooting active leaks

  • Identifying installation defects

  • Supporting warranty claims and construction defect cases

Why It Matters

Water intrusion can lead to significant structural damage, mold growth, and long term durability issues. Proper testing using ASTM E1105 and AAMA 502 and 503 provides clear, defensible data on how your building enclosure is performing.

Our team delivers accurate testing, thorough documentation, and expert guidance so you can make informed decisions about repairs, remediation, or construction quality.