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Air Leakage 101: Essential Facts That You Need to Know

When looking at your choices of replacement windows, it’s important to consider things such as solar heat gain coefficient (SHGC) and U-factor. These ratings can tell you enough about a window’s energy efficiency. But apart from these two major considerations, you should also look into a window’s air leakage rating.

Air Leakage

Why Is Air Infiltration Important

It’s a common misconception that new windows shouldn’t be letting any air inside your home. After all, aren’t replacement windows supposed to get rid of draft problems? While it’s a fact that new windows can help solve draft issues in your home, this does not mean that air won’t be able to pass through the windows. It does not mean that your new windows would actually be letting huge amounts of air into your home either.

Air leakage, or air infiltration, is simply the measurement of air that passes through the window itself. This is usually determined prior to installation, and it must be maintained once the window has been installed in order to prevent drafts. 

How to Fix Air Leaks

If you suspect there are drafts or air infiltration issues in your home, it’s best to have a professional carry out a thorough inspection. Typically, such problems in windows or sliding patio doors can be fixed by sealing the leaks.

For windows, caulking and new weatherstripping can make a big difference and really tighten up your old windows. Meanwhile, for doors, it’s best to update the old weatherstripping.

In severe cases where sealing might no longer work, replacing your windows or doors would likely be necessary. Consult experts so that you can get a comprehensive view of your options.

Renewal by Andersen® of St. Louis is a local company that offers a range of replacement windows as well as sliding patio doors and French doors. With our knowledge and expertise, we can guarantee materials with excellent quality and top-notch craftsmanship. 

Call us at (314) 332-2364, or fill out our contact form to schedule a free consultation. We serve homeowners in St. Louis, MO, and the surrounding communities.

Reviews

"Our door & windows installers did a wonderful job installing our new door & windows. They were on time, friendly, & installed the door & windows fast but efficiently! We are also very happy with the money we are saving on our energy bills since our front door & windows were installed!!!"

Melissa Keebler Dudley
Aug 30, 2022

"We had old windows replaced and our new windows are beautiful. The quality of the window is far superior to the vinyl windows we had. We’re looking forward to seeing a reduction in our energy bill!"

Jennifer Laird-Isenberg
Aug 20, 2022

"The installation was perfect and the people were professional. The quality of the windows were well worth the money. I wish I had used your product sooner in my life."

Robert Nash
Aug 24, 2022

"Renewal by Andersen of St Louis is an outstanding company. Our third phase of replacing windows was accomplished flawlessly, just like the first two phases. All interactions, from ordering to installation, were very professional. The installers were knowledgeable and went above and beyond to solve an issue when a minor structural problem was encountered."

Scott Jepson
Oct 14, 2022

"The installation went very smoothly. The crew were extremely professional and they went about their work efficiently and answered any questions we had while the work progressed. We are very happy with our new windows and patio door. I would recommend Andersen to anyone looking for new windows and/or doors."

Kathy Blasioli
Oct 6, 2022

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