Question: Every winter, the caulk in the 1/16-inch gap between my Silestone counter and backsplash dries up, allowing spills to reach the wall behind. The company that installed the counter didn’t ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Caulk is used to create a waterproof or insulating seal between building materials.