4 Reasons to Choose Fibrex® Composite Material for Your Windows

4 Reasons to Choose Fibrex® Composite Material for Your Windows

August 28, 2018

Window technology has come a long way in recent decades, with new materials that last longer and perform better. Composite wood materials, which often include laminated strand lumber and particleboard, are strong and stable in harsh weather conditions and feature the same—or even better—thermal and structural properties as traditional wood.

Windows with composite frames are also moisture-resistant, eliminating problems caused by mold growth. Renewal by Andersen has been using a unique, patented composite material known as Fibrex® to build windows for many years, which is why our windows have become known for their beauty, durability, sustainability and energy efficiency.

Casement Windows


Because Fibrex is such a strong frame material, it can be formed into many shapes, including  ovals, arches and triangles. You don’t have to stick to traditional rectangular windows for your home with our company! The extrusion process we use allows us to customize your window any way you’d like. We can design windows to complement your home’s architecture, or go for a whole new look. Narrow sashes and frames are also a plus with Fibrex windows, offering less frame and more glass as compared to ordinary frame materials for a more appealing look.


Frames made of our exceptional Fibrex composite material combine the low-maintenance aspects of vinyl with the strength of wood. They are also resistant to flaking, chipping and rusting. Each wood fiber is coated with a special polymer solution during the manufacturing process, making it resistant to fungal growth and decay, as well. With minimal contraction and expansion rates, Fibrex also helps prevent air leaks when outdoor temperatures fluctuate.


Fibrex resists heat transfer almost 700 times better than aluminum, a common material used for window frames. Fibrex is composed of 40% reclaimed wood fibers and 60% thermoplastic polymer with reclaimed wood portions, as well. Since wood preservative solutions are unnecessary with Fibrex, harmful volatile organic compound (VOC) emissions are reduced.

Energy Efficiency

Fibrex frames also have outstanding insulating properties. Combined with High-Performance™ Low-E4® window glass, they help your home stay cooler in the summer and warmer in the winter. This will save you money on heating and cooling costs and help keep your home at a comfortable temperature year-round.

Learn More About Renewal by Andersen® Windows

Let Renewal by Andersen of Northeast PA help you with all of your window needs. We offer a wide range of replacement windows and replacement doors, and have product specialists and designers who can answer any questions you may have. Call us today at [company_phone] and our dedicated staff will be glad to assist you.

Hear From Our Customers

From George, the salesman giving me a balance of wants and needs to Rosko and his team members doing a fantastic job on the window replacement and install. To the post inspection process and thank you package with additional information for cleaning and maintenance. All was great!

I cannot say any more then I have, everyone that came from Renewal by Anderson has been one of the best experiences I’ve had dealing with a company. A big thank you.

The entire team was excellent, professional, respectful, thoughtful, and was always attentive of our needs. They always asked questions before they started to make sure we were on the same page. We already noticed savings on our electricity. We are so happy we chose Renewal by Andersen.

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