Residential: 920.233.3333

How Long Do Windows Last?

Have you taken a serious look at your windows lately? Do you feel a slight draft when you stand near your window? Or have you thought about finding ways to keep heat bills in check? If you’ve been paying more attention to your windows and wonder what’s in store for them, you might be asking, “How long do windows last?”

So, How Long Do Windows Last?

Unfortunately, windows are not designed to last forever. The International Association of Certified Home Inspectors (InterNACHI) conducted a test to determine the average life expectancy of various home components, including windows. Even the highest quality brands installed by professionals eventually weaken or breakdown.

Here is what InterNACHI found :

  • The average lifespan of a residential window is 15 to 20 years.
  • With regular maintenance and under normal wear-and-tear, vinyl windows should be expected to last an average of 20 to 40 years.
  • Well-maintained products may last beyond the 20-year mark, but once your windows start approaching 20 years old, it’s time to think about replacing them and evaluating their effectiveness.

How Long Do Skylights Last?

Many people think that skylights are a luxury addition. But the truth is that most homes would benefit from at least one skylight. They help bring in natural light without compromising privacy and lower energy bills.

Skylights last anywhere from 10 to 20 years, according to InterNACHI.

What Causes Windows to Fail?

worker-replacing-window A window’s lifespan will depend on several factors, including where it is located. Windows that are almost constantly exposed to the sun’s harsh rays won’t last as long as those in shaded areas. The climate in which your home is located also can have a significant impact on windows’ lifespan. For example, an InterNACHI study determined that vinyl windows in coastal areas that are subjected to corrosive saltwater spray last an average of 10 to 30 years, rather than the nationwide average of 20 to 40 years.

Is It Time for Window Replacement?

If you need help deciding if it’s time to replace your windows, check out our blog: ”How to Tell if You Need New Windows.” We detail all the signs you need to look for in a failing window.

If you decide window replacement is in your near future, contact us or call (920) 233-3333 . We will get you information on the brands we sell. We can also schedule an estimate.


Call Us Today! 1.800.236.7887


I just spoke with Dave V. by phone, but wanted to be sure that my appreciation did not go unnoticed. Jeff and Mark of your residential division just left my home after spending two days replacing several storm damaged windows.  I am calling and writing to express my deep appreciation for their professionalism, expertise and spirit.  They are both an asset to your company.  With a positive experience like the one I have experienced, you can bet that if there is additional work that I need done, Omni will be my first call.   ~ Thom N. Oshkosh, WI

“Mark and Brandon are going great guns here. Thanks for sending these gentlemen to do our installation. I have a GREAT deal of confidence in them and fully expect the entire job to go as well as it has to this point.”-Jim

“Your residential installer was wonderful and did an amazing job.”-Kyle, Green Lake

“Both Steve Bridwell & Mark Willems did a great job of helping me with my patio door after my home invasion.”-Kathy, Oshkosh

I wanted you to know that Mark Willems our installer did a FANTASTIC job. He is very professional, knowledgeable and personable. He represents your company well. P.S. We have made several referrals based on our experience! -Mike & Mary Kay, Winneconne

My recent experience with Omni Glass & Paint was fantastic. I had been waiting 3 months for a part for our front door from another glass company in Oshkosh. I reached out to Omni Glass & Paint; they came to look at the door, found the part and installed the part in less than a day. The door works perfect now. I was so impressed with Omni’s work and would highly recommend them to anyone. – Matt Bakalars, Fox Valley Savings Bank

Mark and Jeff installed windows in our home in Oshkosh.  We were extremely happy with their work but more than that, they went above and beyond to install those windows and were extremely friendly and informative along the way.  They even found an issue with rotten wood that the workers who installed our siding just covered up…so we are very grateful. Because of their services we would highly recommend Omni Glass to everyone.  And the windows are outstanding too!   ~ Roxanne D. – Oshkosh, WI

I just called to compliment the man who installed my new shower door.  Jeff was very pleasant, he did an AWESOME job, everything is perfect, and he left the place neater than when he arrived!  Everything lines up, everything fits, nothing leaks! I am so happy with the job he did!   ~ Nancy, Oshkosh, WI

I just wanted to congratulate the great crew we had working at my home, they were fantastic.  I am very, very pleased with their knowledge and abilities, they were the most impressive group of people I have ever worked with. Mark was especially helpful, he was absolutely wonderful to work with. Thanks again!   ~ Rick, P

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