Ultrex® Fiberglass, Quite Possibly the Perfect Building Material

Integrity from Marvin 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.

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. The strength of Ultrex® also lends itself to contemporary designs and narrow sightlines you won’t find in other materials. Factor in the special sizes and proven energy efficiency and you have a window that is perfect for any home.

Ultrex® is also perfect for homes and buildings along the coast, holding up to the harshest conditions mother nature can dish out. Learn more.