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.
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. sealing cracks around windows
Wet your finger with soapy water (for latex) or spit (for silicone—yes, really). Run your finger gently over the bead to smooth it and push it into the crack. Wipe away excess. For a professional look, use a plastic caulk-smoothing tool. Let it cure for 24 hours before painting. A Note on "The Big Gap" What if the gap is wider than a pencil? Caulk will crack. You need backer rod—a foam rope you stuff into the gap first. It fills the void so you only need a thin layer of caulk on top. This prevents the dreaded "hourglass" cracking later. The Bottom Line Sealing your windows won't give you a kitchen renovation's worth of Instagram likes. It won't make your friends jealous. But it will make your home noticeably more comfortable. It will silence that whistling noise you've learned to ignore. And come January, when your heating bill arrives, you'll feel like a genius. Cut the nozzle tip at a 45-degree angle
Cost: ~$15 per window. Time: ~20 minutes per window. ROI: Lower energy bills, higher comfort, and a quieter home. According to the U
Grab a tube of caulk. Your wallet—and your toes—will thank you. Need a visual guide? Most hardware stores offer free printed pamphlets, or search "caulking a window bead" on YouTube for slow-motion technique videos.
