Best Caulk For Sill Plate

Over time it can crack and chip allowing water to seep or.

Best caulk for sill plate.

If you have a solid concrete foundation also run a bead of caulk where the sill plate meets the concrete. A filler similar to caulk is generally used to seal these gaps between the sill plate and foundation when the home is constructed. In this article we will go over typically caulked areas on the exterior typical northwest style homes and also areas that should never be. Look for a sealant labeled minimal expansion.

Sill sealer is a pliable foam product that is available in varying widths up to 10 inches wide. Flexible foam sealant designed for use on both wood and masonry is the best type of caulking for sealing the sill plate. Fasten the sill plate to the concrete slab following the recommendations of the local building code. The best way to air seal the sill plate is to place a sill sealer also called a sill gasket on the concrete before laying down the sill plate.

Latex caulking can harden and crack and pure silicone caulking can pull away from the masonry if it becomes wet. If you have a concrete block foundation also seal the openings on top with expanding foam. Use around the perimeter of windows to help seal the window to the header sill jack stud and jamb. Best uses for silicone sealants silicone is very flexible and acts as a water and moisture repellant making silicone sealants the best caulk for windows and bathrooms.

Caulking is a sealant that fills gaps cracks nail holes and similar imperfections on the surface. Some codes require that the sill plate be bolted to the slab while others recommend a metal. One option for improving the air seal if you use conventional sill seal is to seal from the inside with high quality polyurethane or a siliconized acrylic caulk formulated for adhering to concrete.