Fibrex® Explained: Why It’s the Game-Changer Behind Andersen 100 Series Windows

Table of Contents

Andersen 100 Series Fibrex windows installed in a modern Texas home
Energy-efficient Andersen 100 Series windows made with Fibrex® composite material—ideal for Texas homes.

Fibrex® Explained: Why It’s the Game-Changer Behind Andersen 100 Series Windows

When homeowners in Texas ask us why we recommend Andersen 100 Series windows, our answer starts with one word: Fibrex®. This innovative composite material—exclusive to Andersen—combines the strength of wood with the low-maintenance appeal of vinyl, making it one of the smartest choices you can make for long-term window performance.

At The Woodlands Windows, we work with a lot of materials—but Fibrex® is in a class of its own. In this post, we’ll explain what makes Fibrex® so special, and why it’s the foundation of one of the most durable, energy-efficient, and beautiful window options on the market.

What Is Fibrex®, Anyway?

Fibrex® is Andersen’s patented window frame material, made from a blend of 40% reclaimed wood fiber and 60% thermoplastic polymer. That mix results in a high-performance composite that’s:

  • Stronger than vinyl
  • More stable than wood
  • Resistant to warping, cracking, and fading
  • Made with recycled content

Because Fibrex® is created using leftover wood fiber from Andersen’s manufacturing process, it’s also an eco-friendly choice—something more and more Texas homeowners care about when upgrading their homes.

Built Tough for Texas Weather

If you live in The Woodlands or anywhere in the greater Houston area, you know our weather is no joke. Extreme heat, humidity, and UV exposure can do a number on traditional window materials. But Fibrex® was made to take the heat—literally.

Unlike vinyl, Fibrex®:

  • Maintains its shape in extreme heat
  • Expands and contracts very little, so seals don’t fail
  • Doesn’t warp or sag, even in large window openings
  • Won’t corrode or deteriorate in humid or coastal air

In other words, this material holds up beautifully in the unique challenges of our Texas climate.

More Glass, Less Frame—Thanks to Fibrex® Strength

Because Fibrex® is so structurally strong, Andersen is able to use narrower frames, giving you more visible glass and cleaner lines. That means better views, more natural light, and a sleek, modern look—without compromising strength.

This is a huge advantage for homeowners looking for that updated, high-end aesthetic with reliable performance.

Energy Efficiency That Lowers Your Bills

Fibrex® isn’t just about durability—it’s a powerhouse when it comes to thermal performance too. Unlike aluminum, which conducts heat, Fibrex® acts as an excellent insulator, helping keep your indoor temperature stable no matter what’s going on outside.

Paired with Low-E glass and argon gas, Andersen 100 Series windows:

  • Reduce solar heat gain
  • Block harmful UV rays
  • Lower your cooling bills during Texas summers
  • Keep your HVAC system from working overtime

Plus, they meet or exceed ENERGY STAR® standards in all 50 states—including Texas.

Low Maintenance, High Reward

With Fibrex®, your windows will look great for decades with very little effort.
Here’s what you don’t have to worry about:

  • Painting or staining
  • Fading from UV rays
  • Peeling, cracking, or blistering

Andersen embeds the color directly into the Fibrex® material during manufacturing. Whether you choose white, black, or sandstone, the finish stays smooth, rich, and vibrant—no upkeep needed.

A Sustainable Choice

Fibrex® isn’t just high-performance—it’s responsibly made. Andersen incorporates:

  • Up to 40% reclaimed wood fiber in every frame
  • Pre-consumer recycled content that cuts down on waste
  • Cleaner, energy-efficient manufacturing processes

If you’re building a greener home or just want to feel better about your renovation choices, Fibrex® is a product that checks all the right boxes.

Design Flexibility That Works for Any Style

Thanks to its durability and stability, Fibrex® can be shaped into a wide range of window styles and sizes, including:

  • Casement
  • Awning
  • Gliding
  • Picture
  • Specialty shapes

Plus, darker colors like black and bronze—which typically aren’t available in vinyl—are no problem for Fibrex®, thanks to its heat resistance and color stability.

Quieter Living with Fibrex®

Another bonus? Noise reduction. Fibrex® has a dense, solid structure that naturally helps reduce outside noise. When paired with quality glass, your Andersen 100 Series windows help create a quieter, more peaceful indoor space—perfect for busy neighborhoods or high-traffic areas.


Built for Every Climate—Including Texas

Whether you’re dealing with blazing heat, sudden storms, or seasonal shifts, Fibrex® keeps its shape and performance intact. That means:

  • No sagging from sun exposure
  • No cracking from cold snaps
  • No seal failure from expansion and contraction

In short, Fibrex® is built for the Texas environment—no matter what it throws your way.

Backed by Andersen, Trusted by Homeowners

With over 100 years of window innovation behind them, Andersen is one of the most respected names in the industry. Fibrex® is the result of that legacy—and when you choose Andersen 100 Series windows from The Woodlands Windows, you’re getting:

  • Proven performance
  • A Limited Warranty (20 years on glass, 10 years on Fibrex®)
  • A product tested to last, backed by a company that stands behind it

How Fibrex® Compares to Other Window Materials

FeatureFibrex®VinylAluminumWood
Durability✅ High⚠️ Moderate⚠️ Moderate✅ High
Thermal Insulation✅ Excellent✅ Good❌ Poor✅ Excellent
UV Resistance✅ Excellent❌ Poor✅ Good❌ Poor
Maintenance✅ Low✅ Low✅ Low❌ High
Eco-Friendliness✅ Recycled⚠️ Limited❌ Energy-Intensive⚠️ Variable
Color Stability✅ High❌ Low✅ Good❌ Poor

Final Thoughts: Why Fibrex® Is the Future

If you’re looking for windows that offer long-term value, low maintenance, and top-tier performance, Fibrex® is the clear choice. And when that material is part of the Andersen 100 Series, you’re getting one of the most well-rounded window solutions available today.

At The Woodlands Windows, we’ve seen the results firsthand—and we’re proud to bring this game-changing material to homes across our community.

Ready to learn more or get a free quote?
📞 Call us today or schedule your consultation and let’s talk about how Andersen 100 Series windows with Fibrex® can elevate your home.

Related Post