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Answering Frequently Asked Questions About Fibrex® Windows

High-quality windows will elevate the beauty of your home’s interior and exterior. They will not only brighten up your living spaces, but also help you save on energy costs. At Renewal by Andersen® of Southwest Missouri, we only offer top-grade products, such as windows with Fibrex® frame material.

Fibrex window

Discover the answers to some of the most commonly asked questions about Fibrex replacement windows in this post.

What Is Fibrex®

Fibrex is a unique material that features the warmth and durability of wood with the low-maintenance features of vinyl. This material is made from a combination of wood fiber and thermoplastic polymer. It makes a great window material for residential windows as it withstands bowing, cracking and rot.

Why Should You Go for Fibrex?

Home window replacement experts recommend Fibrex due to the hefty benefits it offers. When combined with Renewal by Andersen’s High-Performance™ Low-E4® glass, Fibrex offers superior energy efficiency and insulating properties. This material is so strong that it can be made into narrower frames and in virtually all shapes and sizes. It can be manufactured into all types of windows, unlike fiberglass that only allows for straight lines. Because of their durability, Fibrex windows do not require as much maintenance, saving you on upkeep costs.

Is Fibrex Protected By Warranties?

The warranty that backs a product says a lot about its reliability, strength and longevity. All Renewal by Andersen windows is backed with one of the most comprehensive warranties in the industry. Our windows come with a 20/2/10 Limited Warranty. It includes a 20-year limited warranty for Fibrex® and glass, a 10-year limited warranty for the frame, sash, and locking mechanism, and a 2-year limited warranty on installation.

Choose an experienced window replacement service provider like Renewal by Andersen of Southwest Missouri for your next project. We offer a wide range of window styles in various colors and finishes to complement every home. Call us at (417) 268-9301, or fill out our contact form to schedule a free consultation.


"Excellent service and product! They checked in with me every few weeks while we were waiting for the order. I was impressed with Sam, who measured my windows and headed the installation crew. He was respectful and patient with his team. They cleaned up after themselves. Before the new windows I had huge windows that didn’t open. Now I feel much safer and get better temperatures in those rooms."

Kimberly Kester
Jul 18, 2022

"My experience with Anderson Renewal was amazing! From the first meeting with Miranda to choose my windows and doors to the installation provided by Tim and his crew was a pleasure! I just bought a home built in the 1960's that needed new windows and a new double front door with sidelights. As everyone knows Anderson Windows are great, but it was the people I interacted with from Anderson that made it such a great experience. It took three days for the windows and door to be installed and they "worked" every minute they were here. My huge front door took most of the day to install because they had to put in a new header and other improvements to make it fit! They even put up new drywall on the inside. Many people in the neighborhood have stopped by to comment on my beautiful front door! I think the crew left my house cleaner than it was before they started! Constantly cleaning up after themselves. I am thrilled with my windows and feel lucky to have met the team at Anderson."

Kimberly Wilson
Jul 17, 2022

"Very professional staff . No pressure sales. The job they do is neat and clean, no cleanup left for the owner. Communication is great. Always informed on the status of of your product, AND the tin of cookies you receive afterwards is a pleasant plus."

Peggy Spivy Morse
Jul 13, 2022

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