AMP Advanced Modified Polymer All Weather Window, Door and Siding Sealant provides a 100% weatherproof and waterproof seal with the ability to be applied on wet and damp surfaces. AMP waterproof sealant has a fast 30 minute paint and rain ready time, and is specially formulated to meet ASTM C920, Class 25. Door, siding and window sealant can be used on exterior and interior surfaces. AMP Advanced is specifically formulated to prevent mold and mildew growth on the cured caulk surface. DAP caulk and sealants provide durable performance for a variety of projects.