Integrity Windows and Doors were born from The Marvin Companies’ Century-long heritage of service, craftsmanship, and quality with a focus on all-out performance. Integrity windows and doors are built with Ultrex Pultruded fiberglass exteriors paired with either rich wood or Ultrex fiberglass interiors for a long lasting, virtually maintenance-free window and door solution.
Tough is what we test. Performance is what we prove. Through a variety of punishing tests in hard conditions, Integrity windows made with Ultrex come out on top again and again. Ultrex expands at nearly the same rate as glass, resulting in windows that keep their seal and don’t leak. Watch this video and see just how tough Ultrex really is! Ultrex is a proprietary name for fiberglass.
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.
Home builder, Matt Risinger, talks the benefits of fiberglass window versus vinyl.
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.
Integrity offers window make of All Ultrex inside and out for maximum performance and minimal maintenance. Integrity also offers Wood-Ultrex windows for the warmth and character of natural wood on the inside with Ultrex strength and performance on the outside.
From traditional double-hung to casement windows. Integrity offers replacement options that enable quick, precise installation without disturbing existing trim inside the home or out.
Wood-Ultrex features rich wood interiors in bare pine to stain or paint to match your interior; or a factory applies white for reduced job site finishing time and labor.
Applied through a patented process, Integrity’s Ultrex finish is a mechanically bonded acrylic that is 3x thicker than competitive finished and provides a smooth, consistent, low maintenance and amazing durable finish.
Choose a finish to complement your style. Almond Frost, Brass, Satin Nickel, Oil-Rubbed Bronze or White.