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This testing standard describes the procedures to determine the water penetration resistance of windows, curtain walls, skylights, and doors when water is applied using a calibrated spray apparatus while simultaneously applying uniform or cyclic static pressure to opposite sides of the test specimen. Uniform pressure means consistent static pressure is applied during a period of 15 minutes. Cyclic pressure means the static pressure is cycled, five minutes on, one minute off, for three cycles.

In no case, shall the total time be less than 15 minutes unless a failure occurs. The ASTM E testing is performed by applying water to the exterior of the test specimen while lowering the pressure inside by means of an air chamber built on the inside or opposite side of the test specimen.

The water spray system has nozzles spaced on a grid to deliver water so that the test specimen is wet uniformly, includingthose areas vulnerable to water penetration. The calibrated spray apparatus spray-rack system delivers water to the test specimen at a rate of 5. The testing pressure differential is usually determined by the testing specifier. Most generic specifications call for a minimum testing pressure of 6. BDG utilizes professional testing equipment that is calibrated to each specific testing standard for accurate results.

Our field consultants are properly trained and knowledgeable of all testing standards. BDG has extensive knowledge of most building systems and specializes in forensic water intrusion investigations.

This allows us to not only properly test fenestrations on new construction projects, but also pinpoint the cause of any test failures and provide accurate recommendations to achieve successful testing results. Failures during quality assurance new construction testing can result in unnecessary delays that can impact your bottom line.

If you are looking for a reputable second or third-party testing company to perform accurate professional testing, provide concise reports, and help you through the entire process, contact BDG today. We provide testing services throughout the United States from our headquarters located in Atlanta, GA.

Professional services based on accurate information that helps you or your company make the right decision regarding your project or asset. Give us a call to discuss your next water penetration testing project. Building Diagnostics Group, Inc. MISSION Professional services based on accurate information that helps you or your company make the right decision regarding your project or asset.


ASTM E 331 and ASTM E 1105: Testing Water Resistance of Exterior Walls

During ASTM E field testing, water is applied to the outdoor face and exposed edges simultaneously with static air pressure. The ASTM E testing can be applied to any curtain wall area or to windows, skylights, or doors alone. It is intended to determine the resistance to water penetration through specified building assemblies. If water does penetrate the assembly, but does not result in failure it may have ill effects on the performance of the materials, sealant, insulation, or laminated glass. The best time to conduct the ASTM E field testing is after the window, skylight, curtain wall, or door assemblies are initially installed and before interior work has been completed.


Differences between ASTM E331 & ASTM E1105

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ASTM E1105 Field determination of water penetration – windows, doors, curtain walls

Water resistance is a critical performance factor for a building envelope , especially in climates where wet, wind-driven rain is a common condition. Keeping water out of wall assemblies is crucial for the long-term health of buildings and their occupants. Intended to simulate a realistic scenario, the test requires the construction of a specimen wall with all components to be tested at full size using the same details as in an actual wall assembly. This could include an air barrier or water-resistive barrier as part of the assembly. The specimen is installed on one side of a sealed test chamber, which is equipped with a water spray grid with nozzles that spray water on the specimen uniformly at a minimum rate of 3. The chamber also has a blower or compressed air system that provides a constant air flow at a fixed pressure.

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