Caulking

Caulking, also known as sealant, is a flexible material that is used to seal gaps and joints in building materials to prevent air, water, or dust infiltration. Caulk is typically made from a material such as silicone, polyurethane, or latex, and is applied in a continuous bead using a caulking gun. Caulking is commonly used to seal gaps and joints around windows, doors, and other openings in a building envelope to improve energy efficiency, prevent moisture intrusion, and improve indoor air quality. Caulk can also be used to seal gaps and joints in other areas, such as plumbing fixtures, baseboards, and exterior siding.