NSE Windows

NSE Windows NSE Windows is a Factory Authorized Windows and Door Installations Company with locations in Hauppauge, Massapequa, and Water Mill Long Island, New York.
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We are a Manufacturer Certified Retailer for Marvin Windows and Doors, Quaker Windows and Doors, and ProVia Windows and Doors. We have the best collection of Vinyl, Wood and Ultrex Fiberglass Windows and Doors to add style, class, and elegance to your house with almost unlimited customization options. Certifications and Awards: NFRC, BBB, Marvin Windows Customer Service Award, Best of Houzz 2018 Service Award, Guild Quality Member.

08/26/2026
08/25/2026

Not every company is built for a quick flip.

Some of us are here for the long game — for our people.

At NSE Windows we invest in teaching our team to be financially savvy. When our employees understand money, they make better decisions at work and at home. That stability shows up in the quality we deliver and the relationships we keep.

Companies like NSE Windows & Marcor Construction are in business for people, not just profits.

08/05/2026

Local. Trusted. The way it should be!

A home that dreams are made of, made possible with NSE and Marvin!
07/24/2026

A home that dreams are made of, made possible with NSE and Marvin!

Catch Justin Brown debuting the NSE Windows wrapped modified under the lights for Riverhead Raceway’s 76th Anniversary R...
07/02/2026

Catch Justin Brown debuting the NSE Windows wrapped modified under the lights for Riverhead Raceway’s 76th Anniversary Race tomorrow night!
See you at the track! 🏎️

Gates 6:30 PM | Friday, July 3rd

06/29/2026

It’s not everyday you see a house THIS beautiful.

What was the true x-factor? The Marvin windows and doors all throughout, of course!

06/24/2026

The problem? This home needed sleek, durable windows that let the sunshine in.

The solution? Beautiful Marvin fiberglass windows provided by NSE!

06/09/2026

The very best projects- they deserve Marvin, period!

We are thrilled to unveil the brand-new NSE Windows modified race car, ready to tear up the track at Riverhead Raceway w...
05/18/2026

We are thrilled to unveil the brand-new NSE Windows modified race car, ready to tear up the track at Riverhead Raceway with the one and only behind the wheel! 🏎️💨

It was an honor debuting this beast at the Smith Haven Mall Car Show. Even better? It was all for an incredible cause, raising funds for the Drive For Dana Foundation to support Long Island Children in Need.

Big things ahead this season. Let’s go racing, Justin! 🤝🔥

This Sunday 5/17 come support a great cause and check out the grand reveal of the NSE Windows sponsored modified race ca...
05/14/2026

This Sunday 5/17 come support a great cause and check out the grand reveal of the NSE Windows sponsored modified race car driven by 👀

Address

5340 Merrick Road
Massapequa, NY
11758

Opening Hours

Monday 8:30am - 5pm
Tuesday 8:30am - 5pm
Wednesday 8:30am - 5pm
Thursday 8:30am - 5pm
Friday 8:30am - 4pm

Telephone

+15165003550

Website

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