Dymonic® 100 high-performance polyurethane sealant from Tremco will not crack, craze or yellow even under extreme UV exposure, making it ideal for sealing exposed exterior joint openings as well as perimeter caulking of windows and doors.
The ASTM C793 Standard Test Method for Effects of Laboratory Accelerated Weathering on Elastomeric Joint Sealants provides an indication of how well a properly installed sealant joint will maintain its integrity and long lasting prevention of air and moisture infiltration without cracking. Three major factors involved in weathering are solar radiation (sunlight), moisture, and heat. Passing this test indicates a sealant’s capacity to maintain its aesthetic appeal and resist leakage over the long term.
In QUV accelerated aging tests (2000 hours), Dymonic 100 white retains its whiteness as well as a silicone.
Exposed to harsh weathering challenges, Dymonic 100 not only resists yellowing but also retains its movement capability. With +100/-50% movement capability, Dymonic 100 can withstand seasonal cyclic shifts imposed by variations in temperature as well as seismic conditions and can be used in wider one-inch horizontal joints and resist sag. Even after 365 days, Dymonic 100 extended 100% when tested in the lab.
BEFORE UV EXPOSURE
AFTER UV EXPOSURE
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