Here's Why Caulking Your Windows is Important
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Here’s Why Caulking Your Windows is Important


When improving your home’s energy efficiency and increasing comfort levels, checking and sealing air leaks is very important. Caulking your windows is one effort you can take to keep warm air in and cold air out this winter.

If you aren’t sure whether caulking your windows is necessary, perform a basic check. You can check for leaks inside by holding a lit candle around the window’s seams. If the flame bends, there’s an air leak. You can also perform a visual check outside to see whether time or harsh summer weather has caused cracks and gaps in the caulk, causing costly air leaks.

Apply a caulk softener two hours prior to pulling old caulk off with the use of a putty knife. Remove as much as possible so the new caulk will adhere well. Then, apply the caulk. Polyurethane generally works well, but there are many kinds to choose from. Follow these steps for a good seal:

  • Cut the tip of the caulking tube at a 45 degree angle. This will help it fit snugly into the window seam.
  • Insert the tube into the caulking gun.
  • Apply the caulk in a slow, fluid motion, while holding the gun at a 45 degree angle. Smooth out the surface with a wet finger to give the finished product a smooth look.
  • Allow the caulk to set for 12 to 15 hours.

Roth Heating & Cooling has been keeping residents in the Portland area comfortable since 1976. Contact us to learn more about keeping your home energy efficient and free of air leaks.

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