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The Top Causes of Window Seal Failure

Window seal failure is a common problem many homeowners face. An effective seal, after all, is important for minimizing drafts and the escape of heat from your home. Understanding what causes it to fail is the initial step in knowing what to do to keep your windows properly sealed. High Performance Homes, one of the top local exterior house contractors, discusses more:

The Windows’ Age

Certain window seals don’t come with a lifetime guarantee, which is mostly the case in older windows. The older the method of weather protection, the more likely it is to fail. Replacing the worn-out weatherstripping is the best way to make sure the windows continue to function as intended.


Windows are designed to resist the effects of the elements. However, if the windows are installed in a home located in a place that receives rain for most of the year, expect their seals to degrade in time. Seeping water lifts the seal, opening your window to more air and moisture. Metal may rust and the wooden components may warp and rot. Before you proceed with your window installation project, make sure the replacement units are designed for the climate that you live in.

Outside Temperatures

Window seals are usually near the home’s exterior, which means that they are often subject to temperature cycling. As the sun’s rays hit the window, the heat gets absorbed by the window material, causing it to expand. When the temperature drops at night, the window cools and draws in air and humidity. This puts the window seals under stress, leading to cracking, shrinking and sagging. The windows’ weather protection becomes less effective if this is not addressed.

For your window repair and replacement needs, turn to High Performance Homes. Our window products are the perfect marriage of performance and unbeatable warranty that reflects their quality. Learn more by calling (888) 892-7939 or filling out our contact form for a free, no-obligation consultation.


For Cameron and everyone, again I say thank you! NW Natural has just recalculated our “equal pay” bill and we’ve gone from $67.00/month to $38.00/month. This is a savings of $348.00 per year plus the electric bill never once exceeded $90.00/month this summer saving us about $300 this year just is savings with the A/C. The windows remain beautiful, functional and more than everything promised! That and a leak free roof, who could ask for anything more! Thanks again!

Wayne, Canby Oregon

“We are so glad that HPH came to us about our windows. These windows are very high quality and look so beautiful in our home. From the very start to the final install and finish, this company has been AMAZING!! Very professional indeed!! LOVE our windows and screen door!”

Cynthia B.

“High Performance Homes have phenomenal customer service, anyone you meet with is very informative, organized an they show fantastic product. I’d highly recommend them if you’re wanting great quality for roofing, siding, windows an even gutters. You can’t beat it!! You’re definitely getting what you pay for. Better than some cheap place an things start wearing off within a year. Keep up the wonderful work :)”

Kay G

“This contracting company recently replaced all the windows in my home. All of the associates I interacted with along the way were pleasant, knowledgeable, and professional. The way the windows were installed was done with precision and care for my home, and I did not have to pay any extra for trim around both the outside and inside of the windows. The end result is pleasing to look at, and I can already tell there’s a big difference in how insulated my home is.”

Emily K.

“The Window Crew is absolutely amazing with the work they did on my family member’s home, and they are all very kind.”

Adison T.
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