What Makes Ultrex Fiberglass Windows by Integrity Different?

Fiberglass is a top material option for windows, that’s why Integrity by Marvin took an excellent existing material and perfected it with the state-of-the art Ultrex Fiberglass. Ultrex is the best in its class for strength, look, and value when it comes to fiberglass windows, and the facts prove it.


Compared to vinyl windows, Ultrex fiberglass has eight times the strength and three times the strength of vinyl and wood composites. Not only is Ultrex a more durable material but its resistance to fading, chalking, peeling, and cracking makes it long lasting as well. Windows are an investment that needs to last for years to come, so Marvin is committed to testing Ultrex strength to be sure it’s the toughest window material on the market.

As for finish, the Ultrex patented finish is the only fiberglass finish to be verified for fiber reinforced thermoset profiles to AAMA’s 624-10 finish specifications. Ultrex by Integrity is the leading material in third party finish ratings and the acrylic finish on Ultrex products enhances the resistance to damage like fading cracking, peeling, etc. and keeps homes looking new for years.


Another superior quality about Integrity windows is that there’s a large variety of options for the look and design of the windows. Whether it’s a traditional or contemporary style you are searching for, the All Ultrex and Wood-Ultrex products both possess the unmatched strength of Ultrex fiberglass. Select from popular style lines and design options that include divided lites and exterior trim. Wood-Ultrex products feature a rich wood interior covered by the Ultrex Fiberglass exterior. This gives Wood-Ultrex windows both strength and beauty for customers.


At the end of the day, what should matter when selecting windows is the value that they will bring to your home. Every homeowner searches for the most their money can buy and that means purchasing products that are built to last and remain looking new for as long as possible.

Not only do Ultrex Fiberglass windows provide strength and durability with damage resistance, but another excellent feature is its energy efficiency. Integrity’s product lines meet (with some actually exceeding) federal ENERGY STAR guidelines. This not only reduces environmental impact, but actually will allow for significant energy savings for homeowners over time. In fact, when compared with single pane windows that are unglazed, Integrity’s dual pane with Low E coating reduces window heat loss and can minimize heating utility bills in cold climates up to 34% and minimize cooling costs up to 38% in warm climates.

With a focus on bringing value and performance within high quality products, Integrity windows use Ultrex pultruded fiberglass to build long-lasting windows that also are exceptionally beautiful. Integrity’s commitment to customer service brings with it a 20-year warranty on glass seals and a 10-year warranty on manufacturer defects.

Architectural Openings & Access only works with the highest quality product lines. We stand by every product we offer to our customers and believe we can find the perfect fit for your home’s needs. The Integrity line by Marvin brands that features Ultrex Fiberglass is one of many of those quality products offered. If you’d like to learn more about your options for new and replacement windows, contact one of our sales reps today to get started with a free quote. We’re there with you from selection to installation so you have an expert by your side throughout the entire process.

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