Advantages of Fiberglass

Why Fiberglass is the Best Choice for Window Replacement in Austin

Choose the right materials for top-performing replacement windows in Austin


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Marvin® replacement windows and doors installed by Amazing Exteriors are constructed with Marvin Window’s exclusive fiberglass frames and sashes. There is simply no more durable, more energy efficient or better performing frame material on the market today. Here’s why you want your Austin replacement windows to be made of Marvin fiberglass.

Fiberglass is strong, stronger, strongest for new Austin windows

Compared to other materials, fiberglass is the strongest, most rigid window and patio door framing material in the replacement industry. In fact, tests have shown that fiberglass is 8x stronger than vinyl and 3x stronger than popular composite windows. That means a more rigid frame that will last longer and perform better, making a fiberglass window a better value than vinyl, wood or aluminum. As an extra bonus, because fiberglass is stronger and more rigid we can make our frames narrower and give you a larger glass area for better views.

Fiberglass won't stick or jam

While all materials expand and contract with changing climactic conditions, fiberglass expands 87% less than vinyl, so it resists warping and weathering in all conditions. That means no stuck sashes, rattling glass or sudden gaps between window and wall for outside air to infiltrate. Your new windows and doors will be more resistant to leaks, seal failures and stress cracks that can compromise energy efficiency and long-term performance.

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Fiberglass resists fading and is maintenance-free

Marvin’s proprietary acrylic finish is 3x thicker than other options. It resists fading, scratches, chalking, denting and peeling better than any other finish. That means our Infinity from Marvin replacement windows and doors in Austin are virtually maintenance-free.

Fiberglass saves you money

Fiberglass has a low thermal conductivity index, helping to boost the overall energy efficiency rating of Infinity from Marvin replacement windows and doors. Partnered with the right choice of energy-efficient glass this will help you reduce the amount of money you spend to heat and cool your home.


What’s keeping you from owning the highest performing, strongest, energy efficient, maintenance-free windows and doors in Austin? Contact Amazing Exteriors today for a FREE no-obligations window replacement estimate.

Make the call to Marvin Windows
and amazing exteriors

Don’t trust your home’s new windows and doors to anyone but the professionals of Amazing Exteriors.
Contact us today for a FREE in-home estimate on new Marvin windows and doors in Austin.

April Window Sale!

20% off Every Window!

20% Off Every Patio Door!

20% off Installation!

No Payments until October 2024!

Plus FREE Exterior Dark Color Upgrade!

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