Integrity’s Story


Ever thought about the story of Integrity products from Marvin?
Well, Marvin Windows & Doors are not just built to perform, Integrity means doing a job right, every time!

To continue the story, why not pop into our showroom here in Library St and speak to one of our sales professionals.

Integrity by Marvin


The Marvin Family of Brands is one company with two brands that is dedicated to creating products that make the places where we live and work more meaningful.

The Integrity brand is Built to Perform®. Our products, made with Ultrex® pultruded fiberglass, feature the industry’s first and only AAMA verified 624-10 finish. Ultrex outperforms and outlasts uPVC vinyl, roll-form aluminum, and other composites. Superior material performance and unmatched fast, efficient delivery make Integrity windows and doors a great overall value. We use Ultrex and our proprietary pultrusion process to manufacture high-demand windows and doors that endure all elements without showing age or wear.

Our values and work ethic are forged by the communities where we’re proud to live and work. When you choose Marvin windows and doors, you support a small-town, family-owned and operated company with deep roots in the community; some Marvin employees are fourth-generation, following the family tradition. We share profits with our employees; we support our communities; we treat our dealers and customers fairly and with respect. That’s Integrity.

Proven Strength

The facts prove it. Ultrex fiberglass is eight times stronger than vinyl and three times stronger than vinyl/wood composites. It resists fading, chalking, peeling and cracking, giving you unparalleled strength and durability. We’re constantly testing Ultrex to prove it’s the toughest window material available.

Excellence In Efficiency

Our windows and doors are more than just tough, they’re also energy efficient. All Marvin products meet or exceed US federal ENERGY STAR® guidelines. So with Integrity windows and doors, not only will you reduce your environmental impact, but you’ll also see significant savings on your heating and cooling bill over time