What We Do...

Alpha Windows is a home improvement company that manufactures replacement windows and specializes in the installation of your new windows, and vinyl siding. To view Alpha's complete line of premium windows, and siding, we invite you to visit our showroom in Ronkonkoma. You will have an opportunity to examine Alpha's superb craftsmanship up-close and compare our features to those of our competitors.

At our Ronkonkoma factory, you will see Alpha windows being built, but our commitment to quality goes well beyond manufacturing. When you purchase Alpha products, be assured you are dealing with a single source through every phase of installation and service. There are no middlemen. We will manufacture and install your custom replacement windows, vinyl siding, and on Long Island, New York, New Jersey, Brooklyn, Queens, the Bronx, Westchester, Manhattan, Staten Island, Nassau, Suffolk and the rest of the Tri-State area! All Alpha installation crews are locally based, factory trained and every job is backed by extensive, long-term warranties. Because you are dealing directly with the factory, you will always receive the most competitive pricing and financing. At Alpha, your total satisfaction is our number one priority.