Windows & Doors

Beautiful windows and doors complete the look of your home, outside and in. Plus, new or replacement windows and doors can increase your home’s value and add energy-efficiency. Whatever your style or budget, we will help you find new or replacement windows to match your family’s needs.

We are proud to carry a wide selection of Marvin^®, from Marvin Signature^®, Marvin Elevate^®, and Marvin Essential^™ collections. We also carry Atrium windows and doors as well as Smarter windows and doors.

If you are looking for high-quality front doors and interior doors, GNH recommends ThermaTru, Simpson, Brosco, Masonite, and Rogue Valley. Speak with our experts today about window placement, style and finish options, door selection, hardware, and much more.

Visit a showroom to explore window and door options, and try them out for yourself.

Greenville
11513 Route 32
Greenville, NY 12083

Store Hours
M-F: 7am-5pm
Sat: 8am-4pm
Sun: 9am-2pm

Closed:
Thanksgiving Day
Christmas Day
New Years Day

Windham
5477 Route 23
Windham, NY 12496

Store Hours
M-F: 7am-5pm
Sat: 8am-2pm
Sun: Closed

Closed:
Thanksgiving Day
Christmas Day
New Years Day

Latham
898 New Loudon Road
Latham, NY 12110

Store Hours
M-F: 9am-5pm
Sat: By appointment only
Sun: Closed

Closed:
Thanksgiving Day
Christmas Day
New Years Day

*Early and late hours available by appointment.

Meet the Experts

Dominick Multari

Dominick Multari has been with the GNH Team since January 2008. As our Greenville location Store Manager, his many years of experience in the industry and knack for problem-solving make him an asset to customers.

James Hermance

James is the Division Manager of our Windham location. He began working in the building material industry in 2003. A Rotarian and Member of the A.O.H. he enjoys working with his customers and helping their vision become reality.

Edward Curtin

Ed is the Store Manager of our Latham location. He assists builders and contractors with a wide range of projects drawing upon his extensive experience in the building material industry.

Tom Howley

Tom Howley has been in the construction and building supply industry since 1986. He easily coordinates projects with architects, builders, and homeowners alike, from initial design to completed projects.

Alex Vincent

Alex is our Inside Sales representative in Latham. She spent many years working in construction and loves to help her clients create their dream homes. Alex will bring your remodeling visions to life and help you plan the logistical details as well.

Matt Oliveri

Matt is one of our Outside Sales representatives based in Windham. He's been with the GNH team since 2007. Matt is not only knowledgeable - he's friendly and dedicated to being a helpful resource.

Rob Brousseau

Rob is an Outside Sales rep based in Windham. A Master Carpenter and former builder, he has designed and built many houses. He loves seeing new designs and projects come together. When not at GNH, Rob collects guitars and spends time with his family.

Trusted Brands

Find name brand products for your home.

Marvin Signature collection

Each Marvin window or door is made to order—not retrieved from a warehouse of finished products. It's the industry’s most extensive selection of shapes, styles, sizes and options

Marvin Elevate & Essential collections

Marvin is the world's largest manufacturer of windows and doors made with Ultrex®—a durable, virtually maintenance free pultruded fiberglass material that outperforms vinyl.

Atrium

Manufacturing a wide range of high-quality windows & providing exceptional customer service, Atrium has established itself as an efficient manufacturer of high quality products.

Therma-Tru

Therma-Tru entry door systems are not only the brand that most builders prefer; they are also unmatched with the best warranties in the industry.

Smarter Windows

Smarter vinyl replacement windows have been designed to offer the maximum in energy efficiency. Designed and custom manufactured to fit virtually any opening.

Simpson Doors

Get inspired with Simpson Doors and explore ways to find your perfect door.

Brosco Doors

Brosco is a fourth generation family owned and operated leading distributor of quality doors and millwork.

Rogue Valley Doors

Rogue Valley Doors incorporate quality handcrafted workmanship into each door they design.

Masonite Doors

At Masonite we push ourselves to do more, to protect what matters so you have peace of mind.

Measuring windows and doors can be a one-person job, but it will go a lot faster with a helper. Read the Full Article on Marvin’s website.

Financing and Credit Application

Tackle those bigger remodeling projects or handle everyday home repairs and maintenance with confidence at GNH. We’re pleased to offer several consumer and commercial credit options to meet your needs, including a traditional cash account, a secure credit card account or an in-house credit account with a 30 day repayment term.

Financing & Credit Options

Helpful Articles

Have you ever considered updating your windows or front door? Are you adding a new deck, and now need to pick out a door to install with it? Browse our articles for more information on the choices available to you.

How to Choose Replacement Windows

5 Signs That You Need Replacement Windows

Why Choose Vinyl Windows?

How to Measure Windows for Replacement

How to Replace Windows in Zones

How to Care for Vinyl Windows: “Do’s and Don’ts”

What are Some Advantages to Choosing Double Hung Windows?

Request a Quote

Looking for something in particular for a special project? Request a Quote with GNH and one of our representatives will contact you about the special needs of your upcoming project. Complete the form below.

How to Save Money on a Kitchen Remodel

Find out how to save money on a kitchen remodel from GNH designer, Michele Gregg. Are you dreaming of an updated kitchen but don’t have a huge budget to spend? Maybe you’re thinking of selling and want to bump up the value of your existing kitchen and make a great first impression? Well, you’ve come…

Read the full Article