Are Fibrex® Windows Worth the Cost?

Are Fibrex® Windows Worth the Cost?Renewal by Andersen craftsman wearing black polo and cap is carrying a white-frame picture window.

If you’ve entered the market for replacement windows, one aspect that may influence your decision is cost. Although you want to be fiscally responsible when determining which windows to install, it’s important to view your window replacement project as an investment, not an opportunity to cut corners. With that being said, you may have come across Fibrex® frame windows during your quest and you may be wondering if they are worth the investment. We’ve laid out some key comparisons that may help clarify where Fibrex® windows stand in relation to others on the market. But first, let’s take a moment to understand exactly what Fibrex® windows are.

What Is Fibrex®?

Crafted by top window manufacturer Renewal by Andersen®, Fibrex® is a proprietary composite material used to construct the frames of RbA replacement windows. This unique material is made from a blend of 40 percent reclaimed wood fibers and 60 percent thermoplastic polymer. The price of Fibrex® windows can vary depending on the series, style, and aesthetic accessories selected.

You are likely to find cheaper window options all over the market, but you will quickly realize those same windows lack the level of quality you are sure to receive with Fibrex® windows. Let’s take a look at where Fibrex® stands against other popular window types in the following categories:

Energy Efficiency

Some replacement window companies may claim that their products are energy efficient, and that may very well be true. But few come close to matching the level of thermal performance offered by Fibrex® windows, which feature best-in-class energy-efficient properties that have earned impressive ratings from both the National Fenestration Rating Council (NFRC) and ENERGY STAR®. Also featuring High-Performance™ Low-E4® glass, these windows easily eclipse ordinary windows with dual-pane glass in terms of performance. In fact, Fibrex® windows have been shown to block heat transfer 700 times better than aluminum-frame windows.


A window replacement project can be quite the investment, which makes it all the more important to choose windows that will provide long-lasting performance and beauty. While many local window companies may rave about the durability of their vinyl-frame windows, most vinyl windows are, in fact, prone to warping after years of sun exposure. Conversely, Fibrex® windows are twice as durable as their vinyl counterparts and won’t rot or decay like wood windows or corrode like aluminum windows can.

Environmental Impact

A reduced carbon footprint is becoming increasingly important to homeowners. If sustainability ranks high on your list of priorities in your search for replacement windows, Fibrex®, once again, is a viable option. As mentioned earlier, Fibrex® is comprised of wood fibers that are reclaimed from Andersen®‘s manufacturing processes, as well as thermoplastic polymer—some of which is also reclaimed. And since these windows feature frames made from a composite material rather than natural wood, there is no need for preservative treatments or repainting, which helps reduce the emission of volatile organic compounds (VOCs).

Your Local Fibrex® Window Company

You’ve probably heard the old adage “you get what you pay for,” and it certainly rings true when it comes to purchasing replacement windows. Although you are sure to find house windows that sell for less than Fibrex® windows, you will be hard-pressed to find options offering the same level of performance, sustainability, and visual appeal. Now, you may be wondering who you can turn to for the installation of Fibrex® windows. For homeowners in Green Bay and surrounding areas, RBA of Greater Wisconsin is the company to call on. Contact us to schedule a complimentary consultation where we’ll discuss how Fibrex® windows from Renewal by Andersen may fit into your home window replacement plans.

Hear From Our Customers

We love our new windows! It’s beautiful, just what we wanted! No more leaky windows and matches my other windows perfectly!

Oshkosh, WI

Absolutely great experience. The installation team was very professional. We have also decided to replace two more windows next spring!

Appleton, WI

RBA did an excellent job and fast! 5 windows in 3 hours from the time they arrived, did the work & cleaned up. It was as if they had never been there, other than having these excellent replacement windows in place!

Green Bay, WI
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