Schedule a Free Consultation

Window Warping: How Fibrex® Windows Can Help

A serious issue that usually occurs in wood, and sometimes vinyl, windows, warping can completely compromise the efficiency and curb appeal of your home. Here, we talk about window warping and how installing Fibrex® windows can help prevent it.

Window Warping

What Is Window Warping?

You can tell a window is warped when it becomes bent or twisted out of shape, creating small gaps that are not only unsightly, but also have a negative impact on the overall performance of the window. Common forms of window warping you need to watch out for include:

  • Bowing along the face of the window.

  • Crooking along the edge of the window.

  • Kinking along one area of the sash.

  • Cupping, which occurs when the window warps inward or outward.

  • Twisting, which occurs when the edges of the window twists.

What Causes Windows to Warp?

Moisture is the number one culprit behind warped replacement windows. Since wood naturally absorbs and retains moisture, it can cause severe rotting and warping when left unchecked after a while. The longer the moisture is retained, the more permanent the damage is. Grain orientation, sunlight exposure, air circulation and finishing are all factors that contribute to warping in wood windows. Vinyl window frames are also quite susceptible to warping. This happens when heat builds up within the frame, especially when the material is not particularly strong or rigid.

How Fibrex® Windows Can Help

A composite framing material made with wood fibers and polymer, Fibrex is extremely warp-resistant. It combines the inherent strength of wood and low-maintenance qualities of vinyl, resulting in a durable material that is warranted not to crack, peel or fade within its expected lifespan. It also comes with High-Performance™ Low-E4® glass that has several layers of coating that prevent solar heat gain.

You can always count on Renewal by Andersen® of Southwest Missouri for top-quality home window replacement solutions, including installing durable and energy-efficient Fibrex windows in your home. Call our skilled team at (417) 685-4446, or fill out our convenient online form to request a free quote, no-obligation today.


"Renewal by Andersen windows experience has been great. From my initial call to Andersen on inquiry about their windows and doors through the order and installation process everyone I’ve dealt with has been great. Great process, great product and most of all great people to work with. Thanks."

Kevin Sweetin
Feb 28, 2024

"I just bought my first house. My patio sliding door was rotten. So, I needed it to replace it. Renewal by Anderson of Southern Missouri listened to what I wanted and delivered it. They did a fantastic job of installing and cleaning up afterwards. They did it even in freezing rain that day I was scheduled to have it replaced. They even had a follow-up to check things out and do the touch ups. I'm amazed at there work. Great job Renewal by Anderson."

DKay Mikel
Feb 9, 2024

"On Feb 1,2024 my husband and I selected Renewel by Andersen for windows for our entire house. It made our house more beautiful with the picture windows. Made the outside more attractive, and on the inside. We did 14 windows. We had 4 men come to do the job in 1 day And they were very friendly, efficient,fast and cleaned up inside and outside perfectly. And most importantly we noticed the heating furnace runs less,therefore saving us money on our gas bill. We live in SW Missouri. We recommend anyone who wants to replace windows in their home to pick Renewal by Andersen. Sincerely, Darius and Nancy Durman"

Nancy Durman
Feb 7, 2024

View All Reviews