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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.


"Their workers who installed the windows were excellent. Our experience with the sales rep was pleasant. He did not pressure us. He made suggestions that saved us money."

Kristin Palmer
Oct 20, 2022

"I would give everyone involved in the whole process a 10 out of 10. With the exception of the window installation crew. They get an 11 out of 10. I can't express in words what an excellent job they did. They went above and beyond."

Don Smith
Oct 25, 2022

"Although it is a process and doesn't happen overnight the wait is worth the end results. A Representative will come to your home and walk you through the entire process. It does take a few weeks from the time they send someone to your home to personally measure your windows to the time the factory specifically custom cuts your windows and ships them out. However, the end result is overwhelmingly satisfactory. The crew sent to install them were professional, cleaned up after the job was completed and did the job in half the time they thought it would take. Highly recommend!"

Kimberly Baugh
Oct 27, 2022

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