DAP® DYNAFLEX® 800 ADVANCED ALL WEATHER SEALANT provides a durable, 100% waterproof and weatherproof seal around windows, doors, siding and trim. Its strong adhesion properties also makes it ideal for use as a bedding sealant for window installation. DYNAFLEX 800 stays flexible to withstand extreme joint expansion and contraction caused by weather and temperature fluctuations. It won't shrink, crack, crumble or break down. DYNAFLEX 800 can be applied to wet surfaces and in extreme temperatures. It dries fast so it's rain and paint ready in one hour, saving time. It guns out easily, tools smoothly, low in odor and VOC compliant. Cured sealant is mold and mildew resistant.