Ultrex® Pultruded Fiberglass
Quite possibly the perfect building material

Integrity windows and doors are made with Ultrex pultruded fiberglass, a material patented nearly 20 years ago when Integrity pioneered the fiberglass windows and door category. Integrity has led the category ever since with a commitment to a product that is tough, smart, long lasting, and worry-free.

The facts prove it. Ultrex is quite possibly the perfect building material for windows and doors. It’s durable, strong, stable, low-maintenance and efficient. Integrity windows and doors made with Ultrex pultruded fiberglass outperform roll-form aluminum, vinyl, and vinyl/wood composites in virtually every measurable category. While other windows might bend, break, or crack over time, Integrity windows hold strong and perform under great stress without showing age or wear.
 

strength of steel

The strongest window wins.

These are the facts: Ultrex is eight times stronger than vinyl and three times stronger than wood/vinyl composites. That’s as tough as steel. So when a house settles and time marches on, Integrity windows stay true and resist sagging—proving that they’re truly built to last.

The comparisons are compelling.

Ultrex tensile strength
Ultrex modulus strength

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Durability is baked in.

The elements can break down a window, unless it’s an Integrity window. Ultrex resists harsh corrosives, remains stable in extreme temperatures, and expands at nearly the same rate as glass, resulting in windows that keep their seal and don’t leak.

Fiberglass windows have a 38% longer useful life expectancy than vinyl. *

No leaks. No seal failures. No problems.

Expansion and contraction

Passes the heat test.

Heat deflection

Stands tough even when the harshest tests are thrown at it.

Impact resistance

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* Life cycle assessment of windows for the North American residential market: Case Study
  by the University of British Columbia, Scandinavian Journal of Forest Research, 2008.

Long-lasting. Good looking.

Beauty keeps up with age when it comes to Integrity windows. Ultrex provides a superior, consistent finish that can be painted, even in dark colors, without voiding the warranty. No-worry durability was top of mind when Integrity developed the patented, high-performance coating process that lets all its products look as good on the outside as they are tough on the inside.

Plenty of rich, dark finishes to choose from.

finish colors
premium finish

Beauty and longevity together at last.

finish comparison
finish comparison

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Lower energy bills look great, too.

Ultrex is 500 times less conductive than aluminum, which means homes retain their heat in the winter and stay cooler in the summer. And this can mean big savings on heating and cooling a home, which everyone will agree is a good thing.

energy savings with windows made from Ultrex fiberglass

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Tough is what we test. Performance is what we prove.

We don’t just claim that Ultrex pultruded fiberglass is the toughest window material available; we prove it. Through a variety of punishing tests in harsh conditions, Integrity windows made with Ultrex comes out on top again and again. Watch the videos below and see just how tough Ultrex really is!

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