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How to Replace Window Weatherstripping

by HomeRepairExpert.com
Weatherstripping can become damaged over time. It may crack, peel or become compressed. By replacing the weatherstripping, you can save money on your home heating and cooling costs because the weatherstripping acts a barrier between the air in your home and the air outside. If you place your hand near the edge of your windows on a windy day and can feel the air coming through the window, it is time to replace the weatherstripping. The job is relatively simple.

  • Putty knife
  • Flat-head screwdriver
  • Alcohol
  • Towel
  • Tape measure
  • Scissors or utility knife
  • Rubber mallet
Remove the old weatherstripping. On newer windows,simply pull up the old weatherstripping. On older windows, pry the inner sash off the window, using a putty knife to get to the weatherstripping.

Scrape any remaining glue or weatherstripping from the window, using a putty knife. If the remnants are in hard-to-reach areas, use a small flat-head screwdriver to scrape the area.

Clean the area using 70 percent rubbing alcohol and a clean towel. Allow the area to dry thoroughly.

Measure the sides, top and bottom of the window where you will be placing the weatherstripping. Write these figures down to refer to as you cut the weatherstripping.

Cut the weatherstripping according to your measurements, using scissors or a utility knife.

Remove the protective covering over the adhesive backing.

Apply the weatherstripping to the appropriate area on the window. Press down firmly as you apply the weatherstripping to get as good a seal as possible.

Replace the inner sash if necessary. You may have to use a rubber mallet to knock it back into place firmly because of the new weatherstripping.

Tips and Warnings

  • Replace weatherstripping during warm weather, as the adhesive material on the back of the weatherstripping will adhere more firmly to the window if the window frame is warm. If you must apply the weatherstripping during cold weather, consider warming the areas where the weatherstripping will be applied, using a hair dryer.



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