Fibrex^®: A Revolutionary Composite for Lasting Weatherproof Windows

While wood, vinyl and aluminum windows have a tendency to warp and crack, Renewal by Andersen’s exclusive Fibrex^® composite material is made from reclaimed wood fiber blended with a polymer for lasting weatherproof windows. Fibrex^® is warranted not to flake, rust, blister, peel, crack, pit or corrode even after 20 years*. This frame material combines the strength and insulation of wood with the low maintenance feature of vinyl to create a superior product.

Unlike other window companies that don’t practice responsible stewardship, Renewal by Andersen products are created through a sustainable, ecofriendly process that leaves minimal impact on the environment. In fact, thanks in large part to Fibrex^® material, Renewal by Andersen and its parent company Andersen Corporation are one of the first window manufacturers in the world to be Green Seal Certified.

So What Is Fibrex^® Material?

• A blend of 40 percent wood fiber by weight, mostly reclaimed from Andersen manufacturing processes, with 60 percent thermoplastic polymer by weight, some of which is also reclaimed.
• Blocks thermal transfer nearly 700 times better than aluminum to help reduce heating and cooling bills.
• Reduces VOC emissions because no wood preservative treatments or painting is required.
• Twice as strong as vinyl, so weathertight seals stay weathertight.
• Retains its stability and rigidity in all climates.
• A unique fabrication process blends the color with the Fibrex^® material during production for long-lasting beauty.
• Resists rot, decay and fungal growth, and won’t flake, blister, peel, pit or corrode*

*See limited warranty for details.