Granite State Glass has earned the reputation as New Hampshire's leader in residential windows and doors thanks to thousands of satisfied clients throughout New England. The GSG Advantage is our decades-proven process of customer focused window and door replacement and is beneficial in every phase of your window and door replacement experience. When you would like to learn more about window and door replacement options available to you, simply call or email your local Granite State Glass. A GSG Team member will assist in setting up an appointment to visit your home that is convenient for you.

Since our inception nearly 40 years ago, Granite State Glass has emerged as the region's leading glazing contractor, covering all of northern new England. There are many ingredients that contribute to the success of Granite State Glass, which show our client base why "The Reason Is Clear." Consistent, high quality, on time performance for those who depend on it, such as general contractors and architects. Financial stability coupled with long-term supplier relationships enable Granite State Glass clients an advantage in the marketplace.

Look to the Granite State Glass Team to assist with any of your educational, commercial or retail filming needs. As a LLumar Select Pro Dealer and Installer, the GSG Team can generate solutions to fit your needs and design the best resolution for your goals such as. Properly LLumar-specified and GSG-installed window film can offer a wide variety of protection from vandalism to violent intrusion deterrence in entrances, sidelights and vestibules. Proper ground floor window film can deter would-be offenders while giving those inside valuable minutes to take action.

Don't let a wooden rail spoil your view and take up your valuable time staining or painting. With seven standard colors, tempered glass panels, and aluminum frames, Granite State Glass can install a safe and attractive alternative to wood railings. Let Granite State Glass enhance your view by designing and installing a glass rail on your deck or porch. For nearly 40 years, Granite State Glass has been serving the glass needs of Northern New England. With twelve locations in New Hampshire and two in Vermont, Granite State Glass is dedicated to serving their customers' needs in a safe, timely and professional manner.

What's new?

Thanks to Jeff Erwin Photography for this amazing water droplet piece he created for the GSG Team!

Posted on Mar 11, 2021  •  Facebook

We love and appreciate when our customers take the time to write us a wonderful review! Check out Ally's experience with GSG below. 👇🏽

Posted on Mar 09, 2021  •  Facebook

GSG has a wide selection of Shower Enclosures in their showrooms. Let the GSG Team help make your shower and bath upgrade a reality!

Posted on Mar 03, 2021  •  Facebook

Creative. Clean. Spacious. Everything you could want from a bathroom renovation. 😍

Posted on Mar 02, 2021  •  Facebook

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