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Integrity windows and doors are made with Ultrex pultruded fiberglass, a material innovation pioneered over 20 years ago by Marvin.
Integrity leads the industry with a commitment to a product that is tough, smart, long-lasting and worry-free.

Monster Truck Strong.

One square inch of our state-of-the-art building material can support 34,000 lbs. That’s more than the weight of TWO of these giant monster trucks.

TENSILE STRENGTH:

Stress-tested to the point of failure to avoid your
stress being tested to anywhere near those levels.

FLEXURAL Modulus Strength:

Ultrex® is 8 times stronger than vinyl.

We know how far our material bends and flexes so you don’t have to worry. That’s confidence that vinyl and vinyl/wood composites, like Fibrex®, can’t deliver.


SUPERIOR TO ALL PAINTED FINISHES

With a finish that is 3 times thicker than competitive finishes, Ultrex won’t crack, dent, chip or peel. It is paintable and virtually maintenance-free.

EXPERIENCE THE INDUSTRY’S BEST FINISHREQUEST A BROCHURE + SAMPLE

WATCH OUR FINISH DOMINATE

WHY AN ACRYLIC FINISH?

The orange light to the left is acrylic, while the rest of the car is painted. The auto industry learned decades ago that acrylic lights outlast a painted finish. Similarly, Ultrex employs an acrylic finish to provide long-term color retention and durability.

INDUSTRY’S BEST
FIBERGLASS FINISH

Ultrex is the first and only fiberglass finish to be third party verified to AAMA’s 624-10 finish specifications.

The patented Ultrex finish performs so well that, unlike vinyl, we offer it in dark colors, like Ebony, without fear of increased heat loads, UV degradation or fading.


THE BEST EFFICIENCY FOR A WINDOW OR DOOR

LOWER ENERGY BILLS AS ATTRACTIVE AS THE WINDOWS AND DOORS

Compared to single pane unglazed windows, Integrity's dual pane windows made from Ultrex with Low E coating can reduce window heat loss and cut costs by up to 34% in cold climates, and cut cooling costs by up to 38% in warm climates.*

EXPANSION AND CONTRACTION

Ultrex expands at virtually the same rate as glass which means our windows stay tight and true making them resistant to leaks, seal failures and stress cracks that can compromise energy efficiency and long-term performance.

ENERGY STAR QUALIFIED SOLUTIONS

Integrity® from Marvin® Windows and Doors combines the low conductivity and superior performance attributes of Ultrex with a selection of energy-efficient glazing options to deliver ENERGY STAR qualified solutions. For a list of ENERGY STAR qualified products please visit ENERGY EFFICIENCY.

see how ULTREX can save you moneyREQUEST A BROCHURE + SAMPLE

See the Ultrex Smoke Test


JOB SITE DURABLE

WHAT TOUGH IS MADE OF:

Fiberglass has an amazing strength-to-weight ratio, which is one of the reasons why it’s the material of choice for boats*, bridges, guardrails, ladders and hardhats.

It’s highly durable, doesn’t leak or corrode, resists rot and resists expanding and contracting in temperature swings. These properties make Ultrex fiberglass 8 times stronger than vinyl and a far more durable material.

WHAT ultrex IS MADE OF:

COASTAL-TESTED DURABILITY

Ultrex is perfect for homes and buildings along the coast, holding up to the harshest conditions mother nature can dish out. Our Impact Line of Integrity Windows is IZ3 Rated. The IZ3 (Impact Zone 3) icon demonstrates that the window has passed every extensive test required to be used in Atlantic and Gulf Coast hurricane zones.


Watch Ultrex fiberglass get pushed to its limits

We’ve proven the strength of Ultrex fiberglass through the rigors of industry testing, but we didn’t stop there. With extreme tough tests, we put our material through wild challenges that prove Ultrex fiberglass is the ultimate building material. Watch along as we hit the ice, carve the wake, and drop the mud in our tough test video series.

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