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Fibrex® Windows: The Leader in Energy Efficiency

Fibrex Windows

With such a wide array of window materials available to choose from, it can be quite confusing to determine which products are the best. While there are a lot of companies that claim their windows are the best value and the most economical, there’s only one type of window material that goes above and beyond expectations: Fibrex®, which is manufactured by the leading window manufacturer in the country, Renewal by Andersen®.

It’s About More Than the Glass

Here at Renewal by Andersen of Northeast PA, we believe the best windows focus on the energy efficiency of the three main window components – glass, frame and installation – rather than just the glass. Andersen Corporation, the parent company of Renewal by Andersen, was the source of this glass-and-frame innovation by patenting Fibrex and bringing a superbly efficient process to the window replacement industry.

Superior Energy Efficiency

When you purchase a window from Renewal by Andersen, you’re getting a revolutionary product that combines the strength and stability of wood with the low-maintenance features of vinyl. While this alone is something to be proud of, there is much more to Fibrex than the combination of the best aspects of these two materials. Unlike your usual windows, Fibrex is particularly exceptional in the area of energy efficiency. Here’s why:

  • Fibrex is a composite material containing real wood fiber, which makes it decidedly strong and durable. This strength allows for narrower frames, which means more glass coverage.
  • The expansion and contraction of our Fibrex material is minimal. It has a very low thermal expansion rate, allowing it to stand up to even the most extreme temperatures. For this reason, it doesn’t crack, bow or leak, and will outperform your current older windows in every season.
  • Fibrex, just like wood, vinyl and fiberglass, has excellent insulating properties that can aid you in conserving and using energy efficiently. Fibrex insulates a whopping 700 times better than aluminum, helping your home contain its heat in the winter and cooled air in the summer. Just imagine how much power and energy you can save with a Fibrex window!

The Renewal by Andersen brand is synonymous with quality, and the team here at Renewal by Andersen of Northeast PA is committed to providing and installing the most energy-efficient replacement windows available. Call us today to find out more about Fibrex replacement windows, and how they can help you maintain a more energy-efficient house.


"Our installation team, Josh and Mike, did a phenomenal job with the installation, cleanup, and "orientation" after the work was completed! We were totally satisfied with everyone that we dealt with before and after the installation...and would surely recommend Renewal by Andersen to anyone contemplating a window replacement project!"

Kathy B.
Nazareth, PA

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