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Dymonic® 100 Polyurethane SealantExoAir PrimerExoAir® High Temperature Flashing (HTF)ExoAir® 230 Air BarrierExoAir® 220 Air BarrierExoAir® 120 Air Barrier
The wall system tested contained five connections:
The lapping sequence was as follows:
Tremco goes above and beyond the standard when it comes to connectivity testing, so in addition to ASTM E2357 Standard Test Method for Determining Air Leakage of Air Barrier Assemblies, we included a water leakage test not required by industry standards, ASTM E331 - Test Method for Water Penetration of Exterior Windows, Curtain Walls, and Doors by Uniform Static Air Pressure Difference.
CONCLUSION AND RESULTS
Testing confirmed that our materials create proven connections at critical tie-in points and that these two systems can work together to provide a solid, protected seal.
All of our tests passed or exceeded the basic requirements. The air leakage test (ASTM E2357), was measured at 0.0010 cfm/ft2 @75 Pa (25 mph, 1.57 psf). We increased the air pressure to 1050 Pa (92 mph, 21.93 psf), at which point the sheathing joint failed, not the membrane connection point. This proves that our system can withstand 115.2 lbs of force when installed on an 8.ft x 8ft. wall assembly, which is rather impressive considering the method of construction and limited area. The measured deflection in the wall was approximatley 0.25 in. across a 16 in. span, which doesn’t sound substantial, but if you used the same method on a 100 ft. wall, the deflection from one side to the other would be 18.75 in. That is significantly more force, torque, and twisting than any commercially constructed wall will see, and the system still remained air tight and intact. The water leakage test (ASTM E331) passed at 750 Pa (79 mph,15.66 psf). for a 15 minute exposure, going ten times higher than the requirement.