You wouldn’t leave a window wide open in a blizzard. Yet, millions of homeowners do the equivalent every winter without realizing it. The culprit isn't a broken latch or a missing pane—it’s the hairline cracks, the invisible gaps, the tiny breaches where the frame meets the wall.
Cut the nozzle tip at a 45-degree angle to match the size of your gap (start small—you can always cut more). Load the caulk gun and squeeze a steady bead ahead of the tip, pushing it into the joint. Don't overdo it—a ¼-inch bead is plenty for most cracks. sealing cracks around windows
According to the U.S. Department of Energy, air leaks around windows and doors account for . That draft you feel isn't just a nuisance; it’s money evaporating into thin air. You wouldn’t leave a window wide open in a blizzard
But here’s the good news: sealing those cracks is one of the easiest, cheapest, and most satisfying DIY projects you can tackle. No power tools required. No engineering degree needed. Just a Saturday morning, a few basic supplies, and the knowledge of where and how to look. Before you grab a caulk gun, you need to understand the battlefield. You are fighting a war on two fronts: Cut the nozzle tip at a 45-degree angle