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Comparing Vinyl and Fibrex® Window Frames

When it comes to energy-efficient replacement windows, vinyl continues to be a top choice among homeowners. It doesn’t require extensive maintenance and has high thermal resistance, making it one of the most cost-efficient options in the market today. However, Renewal by Andersen®’s exclusive Fibrex® window frames provide a great alternative to vinyl windows.

Local window installation company Renewal by Andersen of Rapid City shares a quick comparison between the two window materials here:


Temperature changes cause windows to expand and contract, leading to warped frames. Well-constructed windows can resist such damage brought about by constant wear and tear. While vinyl window frames get distorted when exposed to up to 163°, Fibrex frames can withstand and tolerate much higher temperatures.


Windows with good insulation help keep the air indoors, making sure conditioned air from HVAC systems isn’t wasted that could lead to an increase in monthly energy bills. Unlike windows with aluminum frames, both Fibrex and vinyl windows offer superior energy efficiency.


For a window replacement contractor like us, Fibrex is a better choice over vinyl if you are looking for windows that offer bigger frames without sacrificing outdoor views. The frame material has over twice the strength of vinyl, which means it can be slimmer or thicker depending on your preferences.


Vinyl frames are often made of “virgin” plastics, which means manufacturers utilize 100% new materials. Fibrex, meanwhile, is composed of reclaimed wood fibers bound together by thermoplastic polymers. With this, Renewal by Andersen can produce sustainable window products as a way to reduce construction wastes in landfills.

For your window replacement needs, turn to Renewal by Andersen of Rapid City. Trust our factory-trained residential window services professionals to transform your home with beautiful, energy-efficient replacement windows. Not only will you boost the beauty of your home but you’ll also cut down on rising energy bills, thanks to superior thermal performance.

Call (605) 341-7831 today or fill out our contact form to schedule a consultation. We serve homeowners in Rapid City, SD, and the surrounding communities.


"The Andersen crew was very prompt and professional, and was finished in 1 day. Great!"

Terri Vaughn
May 10

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