Fibrex®: The Exceptional Window Framing Material

There are a couple of important things to consider when investing in window replacement. These include your choice of window style, the warranties and customization options included with your new units and even the prospective installer. Window replacement is a huge investment, after all, so you’ll want to make the most of things.

One of the most important factors you should take into account, however, is your framing material. Your replacement windows should effectively withstand the harsh elements and provide long-lasting performance. The most popular window framing materials are wood, vinyl and aluminum, but reading up on them may turn you off to some of their attributes. Wood, for example, is known for its insulating properties, but it’s also prone to rot. While vinyl is cost-effective and requires little maintenance, it warps under extreme thermal variations. Aluminum, meanwhile, is highly durable, but is a poor insulator.

Because of this, many homeowners are turning to a newer and better alternative. They often find what they seek in composite, which offers a host of benefits that makes it stand out among classic framing materials. In fact, composite offers a combination of the best features of other materials to make for what can probably be considered the best replacement windows available today.

One prime example of composite material is Fibrex®, which is exclusive to Renewal by Andersen® and its parent company, Andersen® Corporation. It combines reclaimed wood fibers and thermoplastic polymer. But, is Fibrex really is as good as they make it out to be? No, because it’s actually better. Here’s why:


When it comes to strength, Fibrex is right up there with wood and aluminum. Unlike wood, however, Fibrex doesn’t crack, pit or corrode. Nor is it prone to rot or moisture damage. Fibrex effectively retains its stability and rigidity in all types of weather. It offers incredible resistance against warping and is twice as strong as vinyl. In addition, Fibrex frames allow for windows with narrower frames and larger glass areas – a testament to durability.


Investing in windows with Fibrex frames allows you to keep upkeep to a minimum. This composite material expands and contracts very little when exposed to extreme temperature changes. No matter your choice of interior or exterior trim color, Fibrex will keep that hue vibrant and unfading. This means you no longer have to worry about scraping and repainting. Keeping your windows in good shape will be easier and more stress-free as well because Fibrex doesn’t require specialized cleaning methods.


You won’t lack for colors if you invest in replacement windows with Fibrex frames. The material is available in a wide selection of interior and exterior trim colors. These include standard white, stone and canvas to bolder greens and reds. It even comes in stainable wood finishes, such as oak, maple and engineered pine. To wrap everything up nicely, you can pair your trim colors with metallic hardware finishes.

What about window styles? Fibrex is strong enough to be shaped into any window style or size. Combine this with the available extensive range of color options, and matching your replacement windows with your home’s motif should be totally worry-free.


Did you know that Fibrex insulates 700 times better than aluminum? Using this composite material for your windows helps you to create airtight seals to prevent significant energy loss. Fibrex is best combined with Renewal by Andersen’s High-Performance™ Low-E4®️ SmartSun™ glass. This advanced glass component reduces heat transfer into your home in summer while trapping heating energy inside your rooms in winter. At the same time, this glass blocks harmful ultraviolet (UV) rays so your interior remains undamaged from extreme sunlight. Together, Fibrex and High-Performance™ Low-E4®️ SmartSun™ glass can help keep your home’s indoor temperature comfortable all year round, minus the high energy costs.


This composite material is made of 40% reclaimed wood fiber. Fibrex undergoes an environmentally friendly manufacturing process. For one thing, it helps reduce volatile organic compound (VOC) emissions by not using wood preservatives or requiring painting. Because of its long product cycle, Fibrex has a low carbon footprint and produces zero landfill waste.

PRO-TIP. Getting Fibrex composite windows is a worthy investment, but make sure to work only with a Renewal by Andersen window expert in your area. Experts will know the product inside out and will install your new windows to adhere to safety and quality specifications. Working with them also lets you benefit from industry-leading window warranties. Fibrex, in fact, is covered by a 20-year limited warranty.

Your choice of window framing material can affect the longevity and performance of your new windows. Fortunately, Fibrex can make your choice much easier, taking the guesswork out of this decision. With its many advantages, you can make the most of your investment.


Author Bio:

Christine Salamone is Creative Director for Renewal By Andersen of Western New York. She has over 10 years of industry experience, and with her team, Christine continues to provide quality window and door replacement service to homeowners in the Rochester and Buffalo, NY,  areas.



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