Fiberglass Windows Overview

  • Overview
  • All Ultrex Series
  • Wood-Ultrex Series
  • Impact Products

Durability and style-that’s Integrity from Marvin. Featuring the strength and beauty of Ultrex® pultruded fiberglass construction, Integrity fiberglass windows come in full line of popular styles. All Ultrex windows look incredible and their 100% fiberglass construction outperforms and outlasts vinyl, aluminum and composite materials. Wood-Ultrex windows combine an authentic wood interior with a virtually indestructible fiberglass exterior. Factor in our IMPACT Products for coastal applications and there is no doubt Integrity windows are Built to Perform®.

You’ve heard of vinyl windows. You’ve heard of aluminum windows. But what you haven’t heard is that Ultrex fiberglass windows outperform them both. And with Integrity All Ultrex windows, you get the unmatched strength and low maintenance of Ultrex both inside and out. The strength of the Ultrex material 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.

You can have it both ways. The Wood-Ultrex fiberglass windows combine the unmatched performance of an Ultrex fiberglass exterior to protect against the elements with the traditional look of a handcrafted wood interior. It’s the perfect blend of classic styling and advanced construction technology designed to give you windows that look beautiful and stay beautiful for decades.

Living on the coast is easy on the eyes-and harsh on exteriors. IMPACT fiberglass windows are built to withstand coastal elements such as severe temperatures, sun, salt and wind that can cause other window materials to quickly corrode, crack and fade. Rated for hurricane IMPACT zone 3, they sport a virtually indestructible Ultrex exterior and handcrafted pine interior. IMPACT windows not only outlast the competition, but leaves them in the dust.