Our Windows Beat Every Other
Window On The Market Today-
Hands Down, It’s Not Even Close, and We Are the Only Company That Can Say That.

In 1992, Andersen perfected and patented Fibrex® composite material technology. Our windows are made from Andersen’s exclusive composite Fibrex® material that lasts longer, performs better, is twice as strong as vinyl and unlike wood, requires virtually no maintenance.**
Fibrex® material is a better window framing material for multiple reasons:
- Because it is a composite using real wood fiber, it is incredibly strong. This means a narrower frame which, in turn, means more glass area, meaning bigger and better views.
- 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 cold and the heat.”
- Because of our proprietary technology, Renewal by Andersen of Canada 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 exceptionally well compared to wood, aluminum and fiberglass, and especially well against vinyl.