Flex Seal "stops leaks fast and is the easy way to coat ... And although it sealed the crack in our flowerpot, we had to use two coats of spray paint to conceal our handiwork.

For smaller cracks, I turn to removable caulk. This easy-to-use products dries as a clear and rubbery seal, putting a stop to cold air leaks. How to use it: It’s extremely straightforward to apply ...