Choosing the right windows matters. When it’s time to replace yours, you want something that will stand the test of time. Exclusive to Renewal by Andersen, Fibrex® composite material offers the strength and stability of wood paired with the low-maintenance benefits of vinyl, making it the top choice for homeowners seeking long-lasting, energy-efficient and durable window frames.
What Is Fibrex®?
Fibrex® is a patented composite material made from reclaimed wood fiber. Due to this unique composition, it has the strength and stability of wood while eliminating the need for frequent painting or upkeep.
What Makes a Durable Window Frame?
A durable window frame should resist warping, cracking, fading, and rotting—especially in Wisconsin’s unpredictable climate. From snow and ice to summer humidity, your windows must stand strong. Fibrex® is engineered to do just that.
1. Proven Strength for Harsh Wisconsin Weather
Fibrex® composite material withstands extreme cold, high heat, and heavy precipitation without breaking down over time. It won’t rot, peel, or corrode like wood or metal frames. Homeowners in Wisconsin rely on this durable window frame material to stay strong through every season.
2. Energy Efficiency That Lasts
Fibrex® offers excellent thermal performance that helps keep your home insulated year-round. Combined with High-Performance™ Low-E4® glass, these windows reduce energy loss and can lead to noticeable savings on heating and cooling bills.
3. Low Maintenance, High Longevity
One of the best parts of Fibrex® is that it requires little to no maintenance. The finish is baked into the material itself, meaning the color won’t fade, chip, or peel—even years after installation. At Renewal by Andersen, we believe that a truly durable window frame should last, and Fibrex® does just that, without constant upkeep.
4. Sustainable and Eco-Friendly
Fibrex® is composed of 40% reclaimed wood fiber by weight, making it an environmentally responsible choice. Fewer replacements mean less landfill waste, making this durable window frame material a win for your home and the planet.
5. Stronger Frame, Larger Glass Area
Thanks to the structural integrity of Fibrex®, Renewal by Andersen windows can have narrower frames and more glass, maximizing your view and the amount of natural light your home receives.
6. Backed by a Leading Warranty
Renewal by Andersen stands behind its product with an industry-leading warranty, including 20 years of coverage on the Fibrex® material. Becasue of this, homeowners can have the confidence that comes with a window frame built to last.
Choose the Most Durable Window Frame Material
Don’t settle for window frames that will fail in just a few seasons. Choose the proven performance of Fibrex®—a durable window frame material made for Wisconsin homes. Contact Renewal by Andersen today for your free consultation and see the difference for yourself. Don’t settle for less, get the best!
