Fiberglass Windows in Grand Rapids

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Integrity Windows by Marvin

We work with top manufacturers all over the country and local distributors right here in Grand Rapids to source only the best building materials for your home’s next project.  And though we carry a variety of fiberglass windows, we are proud to highlight our partnership with Integrity Windows by Marvin Windows and doors: a 4th generation, family owned company, manufacturing right here in the USA.

Ultrex Fiberglass is eight times stronger than vinyl and three times stronger than wood/vinyl composites. That’s as tough as steel. So as the house settles and time marches on, Integrity windows by Marvin stay true and resist sagging—proving that they’re truly built to last.

Renaissance Exteriors is a preferred Integrity Window installer and offers an assortment of Integrity products to fit your window and door desires. Each Integrity by Marvin product is specially designed and Installed with your home’s project in mind. Our representatives will work with you to consider your home and piece together unique Integrity products that provide a distinct design for every vantage point of your home, while remaining true to the look and feel you want from your windows and doors.

Integrity windows are all about combining durability and style. 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®.

Can’t decide between wood and fiberglass? 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.

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