Opt for Removable Caulk
Removable caulk is a great solution for leaky, energy-wasting windows. It looks a whole lot better than covering windows with plastic film, and you can easily pull it off when springtime rolls around. If you don’t find it at a local home center, just search online for “removable caulk” (about $6 per tube). Don’t use any caulk on bedroom or other windows that may have to be opened quickly to escape a fire. Don’t have a caulk gun? Here’s how to improvise.