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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.


"Quality product, quality workmanship. Everyone I interacted with at Renewal by Andersen of SW Missouri had pride in their work from sales to financing to project oversight to installation. It must be a great company to work for because that shows in the professionalism of the staff. Best of all, they want happy customers and go out of their way to make sure that happens. Yes, I love my windows (but I knew I would--it's a great product). Friendly, helpful, easy financing, and yes--they pass costs on to the customer for this, but it meant that I was able to get the windows I wanted and needed for my creaky, lopsided old house. Couldn't be more pleased."

Aug 11, 2023

"The company representative who met with me initially was very direct, told me how the process would go, explained about why Anderson windows are of such good quality and how they stand by their products and their workmanship. My 3 windows arrived when they said they would, & the men who installed them were very professional, polite, & efficient. They showed me how the windows work and left the room as tidy as it was before they did the installation."

Judith Peavey
Aug 14, 2023

"We just had our windows done by Renewal. They kept us informed about the progress of manafucture & installed at the approximate date. Good qualtity & if you didn't know that there were screens on the windows you would think they were missing. Very clear view. Great in this hot weather, the house stays cool."

Jerry C
Aug 22, 2023

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