We are a home improvement company that specializes in replacement windows and vinyl siding. The leader on Long Island and New York. We will order and install your custom 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.

Highlights, Specialties & Features

  • Siding
  • Windows
  • Siding Replacement
  • Window Replacement
  • Roofing

Serviced Areas

  • Long Island, New York, Nassau County, Suffolk County, Queens, Brooklyn, Bronx

Payment Options

  • Money Orders, Discover, Financing Available, Personal Checks, Debit Cards, MasterCard, VISA

Contact Details

  Website
  Person Alpha Windows & Siding
  City Greenvale , NY
  Zip Code 11548
  Address 71 Glen Cove Road
  Phone Number (516) 399-2090

Products & Services

Alpha offers all types of siding on homes. Vinyl siding, stone siding, fiber cement siding and many more.


We provide a wide range of windows, which include vinyl windows, wood windows, and composite windows.

  • I would recommend this business
  • Price, Quality, Craftsmanship, Integrity

The effort put in to completing work on time and working whenever possible, while still maintaining a high value on excellence is what we received. I cannot give enough praise towards the genuine effort put forth by the people at Alpha to try and work with my schedule and the difficult weather before us. House came out like new with the new vinyl siding and would give my approval.

Value for money
Service & support
Quality
Location
Overall ratingExcellent