ASTM E1105

ASTM E1105 is the ASTM standard for field determination of water penetration of installed exterior windows, skylights, doors, and curtain walls using uniform or cyclic static air pressure difference. It is used to evaluate how these installed assemblies perform under controlled pressure conditions, helping identify potential water intrusion concerns before they affect building performance. For project teams, inspectors, and specifiers, this standard supports clearer testing expectations and more consistent assessment of installed envelope systems.

Overview of ASTM E1105

This standard describes a field test method focused on water penetration resistance in installed exterior fenestration and curtain wall systems. It addresses the use of uniform or cyclic static air pressure difference to help determine whether water passes through the assembly under test conditions. ASTM E1105 is commonly referenced when a project needs a recognized procedure for evaluating installed windows, skylights, doors, and curtain walls in place, rather than in a laboratory setting.

Common use cases of ASTM E1105

ASTM E1105 is commonly used during building envelope testing, commissioning, and quality verification for installed exterior assemblies. It may be applied to windows, skylights, doors, and curtain wall systems when a project needs a field-based method for checking water penetration performance. The standard is especially useful where procurement documents, project specifications, or acceptance criteria call for a formal test method to support installation review and performance confirmation.

Benefits of using ASTM E1105

Using ASTM E1105 helps create a consistent basis for evaluating water penetration in installed exterior assemblies. It supports compliance efforts, improves testing uniformity, and can reduce uncertainty during acceptance or troubleshooting. For owners, contractors, and consultants, the standard provides a recognized technical reference that may improve quality control and help identify issues related to installation or system performance before they lead to costly water intrusion problems.

• Field test method for installed assemblies
• Addresses water penetration under pressure difference
• Applies to windows, skylights, doors, and curtain walls
• Useful for testing, inspection, and acceptance workflows
• Supports consistent performance evaluation