Vinyl replacement windows have been the frontrunner in the window installation industry for years, thanks to its high durability and energy efficiency compared to traditional wood window frames. However, despite its sturdiness and longevity, it does have one common but serious disadvantage.

Because of the composition of vinyl, the material itself can be prone to warping issues. The problems are most common in casement and awning windows but it’s possible for other styles of vinyl windows to have them. Fortunately, our experts at Renewal by Andersen® of Portland offer a solution to this perennial problem: Fibrex®.
What Is Fibrex®?
As a leader in the window replacement market, Renewal by Andersen® has developed an answer to common warping issues found in vinyl windows. Fibrex® is a composite framing material that combines all the aesthetic advantages of wood and the strength and low maintenance needs of vinyl. Fibrex frames are extruded, which means that they can be made into any shape or size. This same manufacturing process also gives it the strength to resist warping problems.
How Does Warping Happen?
Materials expand and contract depending on temperatures. During the day, the sun can heat up vinyl frames enough to cause its size to expand slightly. At night, this expansion is reversed. This constant thermal cycling ultimately leads the frames to lose its shape and deform resulting in warping.
Avoid Warping With Fibrex® Replacement Windows
While there is no guaranteed way to stop thermal cycling, you can minimize its effects by choosing Fibrex® replacement windows. Make sure you trust only an authorized installation company to maximize the benefits this type of window can offer.
Eliminate window warping problems for good with the help of our window installation professionals at Renewal by Andersen® of Portland, your trusted local provider of Fibrex® replacement windows. Give us a call at (503) 912-2668 or fill out our contact form to schedule a consultation and request a free estimate today. We serve homeowners in Salem, Lake Oswego and Portland, including other neighboring communities in Oregon.