Fibrex® Composite Material
An Andersen Exclusive
Our revolutionary Fibrex composite material combines the strength and stability of wood with the low-maintenance features of vinyl.
Andersen Corporation created Renewal by Andersen to change the window replacement industry – not only with a different and better process – but also with an innovative new material to make the frames. In 1992, Andersen perfected and patented Fibrex® composite material technology.
Fibrex® material is a better window framing material for several reasons:
Because it is a composite using real wood fiber, it is very strong. This means narrower frames which, in turn, means more glass area. Vinyl frames are often thicker, reducing glass area.
As a low-maintenance composite, it expands and contracts very little, even with extreme temperature swings. This means we can offer dark exterior colors that vinyl can't because Fibrex® material can "take the heat."
Due to this material difference, Renewal by Andersen can offer one of the best window limited warranties in the industry.*
Consider everything you expect from a window. Fibrex material makes a difference in every instance. Measured across a range of conditions that affect efficiency, maintenance and beauty, Fibrex material performs well compared to wood, aluminum and fiberglass, and especially well against vinyl.
* See limited warranty.
contraction rate and can bow, breaking the glass seal.
Heat leaks out of your house in the winter and into
your house in the summer.
may look artificial in your home. Vinyl frame material is
often thicker, reducing glass area. Fiberglass can only be made into straight lineals.
Learn more about Fibrex, the exclusive composite material that makes Renewal by Andersen windows a better choice.
Request an Estimate
Find a Showroom
Want to Learn More?
Request a free replacement windows and patio door catalog.
Save $100 Per Window
When you buy 4 or more replacement windows
Offer ends June 8
OUR HASSLE-FREE PROCESS IN 4 EASY STEPS!
Our design consultants listen to your needs and create a plan to improve energy efficiency and enhance your home's beauty.
Measure & Manufacture
Project Technicians ensure accuracy and answer any last minute questions before sending in the order for your fully customized windows.
Our Installers treat your home as if it were their own and clean up afterwards.
A robust limited warranty is backed by a commitment to making sure your windows function as expected.