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caulk

Deciding between Silicone Caulk and Polyurethane Caulk

Sealants are basic construction materials used to cover gaps and holes to make something airtight and watertight. They come in two varieties: polyurethane and silicone. Silicone is an inorganic substance, while polyurethane is organic. The two, no matter how similar their functions are, have chemically dissimilar compositions. What they are made up of, respectively, determines […]