Seal any openings both indoor and outdoors. This multipurpose, cream-colored sealant blends into natural surfaces, can be painted and sanded, and expands up to 1-inch. Tack-free in 5-15 minutes and trimmable in one hour, this sealant adheres to wood, metal, masonry, glass and most plastics. By properly insulating and air sealing your home, you can help lower heating and cooling costs by up to 30%.