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Answering Frequently Asked Questions About Fibrex® Windows

It pays to invest in quality windows and doors for your home. At Renewal by Andersen®, we install windows made from our unique Fibrex® material, one of the best window replacement options available today.

Fibrex window frame

Read on to learn the answers to frequently asked questions about Fibrex windows.

What Is Fibrex?

Fibrex combines the beauty and durability of wood with the low-maintenance features of vinyl. It’s made of wood fibers and thermoplastic polymer. This material offers extreme resistance to bowing, cracking and decay.

Why Should I Choose Fibrex?

When combined with our High-Performance™ Low-E glass, Fibrex can help boost the energy efficiency and insulation of your home. Because of their durability, Fibrex windows don’t require as much maintenance as other types of windows, saving you on expenses. Because Fibrex is so strong, we can build windows with narrower frames, giving you a more expansive outdoor view. To make the most of your location’s scenic view, also consider our sliding patio doors.

Is Fibrex Available for All Window Styles 

Fibrex is available for all styles and types of windows, including casement, double-hung, bay, bow and picture windows. This material can also be used for curved and specialty windows, unlike fiberglass.

What Warranties Do Fibrex Windows Come With?

At Renewal by Andersen, all our windows and doors come with some of the most comprehensive warranties in the industry. Our Fibrex windows are backed with our 20/2/10 Limited Warranty. This includes a 20-year limited warranty for Fibrex and glass, a 10-year limited warranty for the frame, sash and locking mechanism, and a two-year limited warranty on workmanship.

For quality replacement door and window installation services, choose Renewal by Andersen of Austin. Call us at (512) 298-2270 or fill out our contact form to schedule a free consultation. We serve clients in Austin, TX, and nearby areas.


"Renewal by Andersen delivered a superior product with superior customer service, the best construction, experience and all promises completed professionally and in a timely manner. All my windows were replaced in one day"

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