5 Ways to Improve the Energy Efficiency of Existing Windows

5 Ways to Improve the Energy Efficiency of Existing WindowsAre you looking to improve the energy efficiency of existing windows and eliminate a major source of air leakage in all seasons? Simply knowing the number of windows in a particular home provides some basis for estimating potential energy loss. Windows typically provide numerous opportunities for air leaks, allowing cooling or heating to flow out of the house.

Here’s a short list of quick fixes that can improve the energy efficiency of existing windows without the substantial cost of installing new units.

Install Weatherstripping

To close that gap between window surfaces that move, renew worn weatherstripping. While adhesive-backed foam tape is the easiest and cheapest option, for more permanent repair that you won’t have to replace often, try V-seal plastic or rubber strips to stop air leakage along the window sash.

Fill Larger Openings

Rope caulking is the best option to fill wider, more irregular gaps around older windows. It’s pliable and sticky and can be stuffed into a variety of openings that allow air leakage.

Seal Cracked Panes

Obviously, replacing glass is the only permanent solution. However, for a temporary fix to stop air leakage, try filling the crack with nail polish. Once it hardens it will seal the crack until the weather improves and replacement is more convenient.

Close the Gap

The opening where the bottom of the window contacts the sill often widens as wooden components shrink. Permanent sealing prevents opening the window. One option is a commercially available draft snake made of foam rubber and cut to size. It can be laid in the sill and the window closed on top of it to seal the gap.

Replace Deteriorated Glazing

Remove all traces of the old stuff using a putty knife. Take the glass pane out and apply a bed of fresh glazing putty, then press the glass back in place and secure it with glazing points. Apply a line of putty to seal the perimeter of the glass, and smooth it with a putty knife.

For more ways to improve the energy efficiency of existing windows, contact Paitson Bros. We’ve been your source for energy-saving advice since 1922.

Our goal is to help educate our customers in Terre Haute, Indiana about energy and home comfort issues (specific to HVAC systems). For more information about energy efficiency and other HVAC topics, download our free Home Comfort Resource guide.

Credit/Copyright Attribution: “My-Portfolio/Shutterstock”

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