What it is A waterproof sealant mastic designed to quickly seal holes, gaps and joints on a variety of surfaces. Formulated with a cooling adhesive that cures rapidly when exposed to wind, it creates a protective, long-lasting barrier against rainwater and moisture. Key benefits (why you need it) Fast protection: cures in minutes to stop active leaks and reduce further water damage. Versatile repair: bonds to wood, concrete and metal and works on flat roofs, pitched/metal roofs, foundations, sheds, basements and planter boxes. Reliable leak prevention: seals rat holes, wall cracks, pipe penetrations and other common openings to keep moisture out. Durable barrier: provides a waterproof layer that limits further deterioration and reduces the need for temporary fixes. Important attributes Function: waterproof sealing and gap filling for holes, cracks and pipe openings. Compatibility: suitable for wood, concrete and metal surfaces; designed for roofing, foundations, basements, sheds and planter boxes. Performance: quick-drying, wind-activated curing; forms a protective seal against rainwater and moisture. Material: waterproof sealant mastic with a cooling adhesive formulation. How it solves real problems Stops ongoing leaks fast: apply to active leaks or exposed gaps and the product cures in minutes to reduce interior damage and mold risk. Prevents recurring water entry: fills small to medium holes and cracks so water cannot track through walls, roofs or pipe collars. Reduces emergency repairs: a durable sealant that keeps moisture out until a permanent repair or replacement is scheduled. Typical use scenarios 1. After a storm, quickly seal a puncture or seam on a flat roof to prevent water entering an attic or top floor. 2. Patch around a basement pipe penetration or wall crack where rainwater or indoor water is tracking into the space. 3. Repair seams and joints on a metal shed roof or planter box to protect stored items and soil from water damage. Application notes Simply apply to clean, dry surfaces; the cooling adhesive cures quickly when exposed to wind and forms a protective waterproof seal in minutes. Ideal for rapid, on-site repairs where speed and compatibility matter. Use this waterproof sealant mastic when you need a fast, versatile, and durable solution to stop leaks and seal vulnerable areas on wood, concrete and metal structures.