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About Alpha

To view Alpha’s complete line of premium windows, siding and roofing, we invite you to visit our showrooms in Massapequa, Commack, and Greenvale. You will have an opportunity to examine Alpha’s superb craftsmanship up-close and compare our features to those of our competitors.

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 customize and install your replacement windows, vinyl siding, and roofing on Long Island, New York, 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 and every job is backed by extensive, long-term warranties. Because you are dealing directly with the source, you will always receive the most competitive pricing and financing. At Alpha, your total satisfaction is our number one priority.