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Business Details
37 Years
experience
Your Trusted Partner for Exterior Home Remodeling in Long Island
Unified Window Systems has been a trusted name in exterior home improvement across Long Island and the New York Metro area since 1989. Founded by Steven J. DiMare, our family-owned business has grown from a small operation to a leading provider of roofing, siding, windows, doors, and masonry services, serving over 350,000 homeowners with a 99.6% satisfaction rating. Our team of certified professionals partners with top manufacturers like Owens Corning, GAF, Andersen, and CertainTeed to deliver durable, energy-efficient solutions backed by industry-leading warranties.

We prioritize customer care, offering flexible financing options and a seamless process from free estimates to expert installation. With showrooms in Baldwin, Patchogue, Brooklyn, and Scarsdale, we combine decades of experience with modern innovation to transform homes while maintaining the core values of quality craftsmanship, dependability, and genuine care for every homeowner.
Services
Roofing Siding Windows Doors Masonry Awnings Commercial Remodeling Decking & Railing Gutters Insulation
Details
  • Year established: 1989
Highlights and features
  • Family Owned & Operated Since 1989
  • 99.6% Customer Satisfaction Rating
  • Certified Installers for Top Brands
  • Flexible Financing Options Available
  • Serving 350,000+ Homeowners
Associations and certifications
  • Better Business Bureau (A+ Rating)
  • Owens Corning Platinum Preferred Contractor
  • GAF Master Preferred Contractor
  • TAMKO Mastercraft Pro Certified
  • ENERGY STAR Partner
  • EPA Lead-Safe Certified
  • Good Housekeeping Seal
What people say
Excellent job Promptly came Completely satisfied Best in the industry Seamless experience
Services
Roofing
Unified offers certified roofing installations using premium materials from Owens Corning, GAF, and TAMKO. Our expert team provides inspections, replacements, and overlays with energy-efficient solutions. We ensure durability and protection against Long Island's climate, backed by industry-leading warranties.
Siding
We install high-quality vinyl, composite, and wall stone siding from CertainTeed, Alside, and ProVia. Our siding services enhance curb appeal while providing low-maintenance, weather-resistant protection. Each project includes expert consultation and a lifetime warranty.
Windows
As certified installers of Andersen, Pella, and Ideal windows, we offer energy-efficient replacements with custom fit and no leaks. Our windows improve insulation, reduce noise, and increase home value, supported by comprehensive warranties.
Doors
We provide entry, garage, and storm doors from Andersen, Provia, and Homeguard. Our installations enhance security, energy efficiency, and aesthetics. Each door is professionally fitted and backed by manufacturer warranties.
Masonry
Our masonry services include patios, walkways, and landscape walls using Cambridge Pavers and Tando Stone. We create durable, inviting outdoor spaces tailored to your property's style and functional needs.
People
Steven J. DiMare
Founder
Steven J. DiMare founded Unified in 1989 after decades of hands-on experience in construction. Starting as a laborer, he built the company on values of quality, integrity, and customer care, establishing it as a Long Island home remodeling leader.
Steven M. DiMare
CEO
Steven M. DiMare became CEO after learning every aspect of the business from warehouse to management. With a degree in psychology and marketing, he continues his father's legacy, focusing on innovation and customer satisfaction.
Questions
What services does Unified Home Remodeling offer?
We specialize in roofing, siding, windows, doors, masonry, and exterior remodeling. Our services include inspections, replacements, and installations using premium materials from top brands.
Do you offer financing options?
Yes, we provide flexible financing with 0% interest and terms up to 5 years, making it easier to start your project without upfront costs.
Are your installers certified?
Our team includes certified professionals partnered with Owens Corning, GAF, Andersen, and ENERGY STAR, ensuring expert installations and warranties.
What areas do you serve?
We serve Nassau, Suffolk, Westchester, and Putnam counties, as well as Brooklyn, Queens, Staten Island, and the Bronx.
What warranties do you provide?
We offer industry-leading warranties on products and installations, including manufacturer warranties and our own guarantee for workmanship.
How do I schedule a free estimate?
Call (888) 631-2131 or fill out our online form to schedule a free consultation with a remodeling expert in your area.