DAP® Dynaflex® 800 Advanced All Weather Sealant is a premium exterior elastomeric sealant developed for professional siding and window installations. It won't shrink or crack to provide a long lasting, flexible seal that prevents water and air intrusion. Can be applied in extreme temperatures 0° To 120°F and on wet or damp surfaces. Cures in 24 hours and paintable in 1 hour. Low odor, easy tooling and VOC Compliant. Exterior/interior. Meets ASTM C920, Class 25.