Inspecting and repairing caulk is a project you should do yearly, according to Sassano. “Using caulk to seal cracks and gaps serves multiple purposes: It lowers heating and air conditioning bills by reducing air flow into and out of the home; it prevents moisture that can cause wood rot, mould, mildew and water damage, and it keeps insects and other pests out,” he says. The project will determine which type of caulk. For example, silicone is best for the bathtub and shower area. Start by removing the old caulk, cleaning the surface, and then apply new caulk. Caulk removal tools and solutions make the project even easier.
Smart sealing: 3 steps to mastering your caulking gun.