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Affiliations & Certifications

Thermo-Seal is proud to be a member of and certified by some of the industry’s leading organizations and associations.

GAF Master Elite logo

GAF Master Elite

Master Elite® Certification is GAF's factory certification program that provides ongoing training to roofing contractors. With only 2% of all roofing contractors qualifying as Master Elite®, customers know their roof will be completed professionally.

James Hardie website Contractor Logo

James Hardie Contractor Alliance Member

The James Hardie Contractor Alliance Program is designed to match homeowners with professional contractors from around the country, who are trained and available to help you meet your needs for siding repair and replacement. In an effort to provide the highest level of service, customer satisfaction surveys are initiated on every James Hardie project installed by a Preferred Contractor using GuildQuality—a 3rd party customer satisfaction surveying service.

Certainteed 5 Star logo

Certainteed 5 Star Contractor

CertainTeed is North America's leading brand of exterior and interior building products, including roofing, siding, fence, decking, railing, trim, insulation, gypsum and ceilings. To qualify as a CertainTeed 5-Star Contractor, a contractor must successfully complete continuing education and maintain a high rating with the BBB.

Andersen Windows & Doors logo

Andersen Certified Contractor

Andersen Certified Contractors are true craftsmen who are hand-picked by Andersen and receive product training and installation resources. Thermo-Seal's expertise and experience allows us to capture the vision for your home and provide the right products for your project.

Angie's List logo

Angie's List, Super Service Award Winner

For over two decades, Angie's List has provided trusted reviews to help millions of consumers make informed and confident hiring decisions when it comes to local service providers. Every year, Angie's List awards the top rated companies in their respective industries with the prestigious Super Service Award. Thermo-Seal is proud to be a recipient of the Angie's List Super Service Award.

Thermo-Seal Windows Siding & Roofing, Inc. BBB Business Review

Better Business Bureau (BBB)

BBB maintains Business Reviews on more than 4.5 million businesses and rates them based on complaint histories, responsiveness to customers, licensing, legal and government action, and other factors. Only Accredited Businesses that meet the BBB Code of Business Practices are permitted to display the BBB logo in their marketing and place of business.

EPA Certified logo

EPA Certified

EPA's Lead Renovation, Repair and Painting Rule (RRP Rule) requires that firms performing renovation, repair, and painting projects that disturb lead-based paint in homes, child care facilities and pre-schools built before 1978 have their firm certified by EPA (or an EPA authorized state), use certified renovators who are trained by EPA-approved training providers and follow lead-safe work practices.

Vinyl Siding Institute Certified Installer logo

Vinyl Siding Institute Certified (VSI)

The Vinyl Siding Institute, Inc. (VSI) is the trade association for manufacturers of vinyl and other polymeric siding and suppliers to the industry. Becoming VSI Certified provides a strong understanding of vinyl siding installation and industry recognized installation standards.

Product Partners

Pella logo Certainteed logo GAF logo Harvey logo Therma-Tru logo James Hardie logo


  • WC License #18925-H07
  • Yonkers License #4352
  • NJ License #13vh03970200
  • CT License #Hic616176
  • Putnam County License #6733
  • Nassau License #H0810530000
  • Suffolk License #43947
  • Southhampton License #L002290
  • NYC DCA #13110460
  • Rockland County License #H-11137-07-38
  • Long Beach License #14340

We make clients happy.

We Make it Easy

With customer service and craftsmanship that’s second-to-none, we make it easy
to achieve the home of your dreams.
Free, No Hassle Estimates Schedule a free in-home or virtual estimate. We’re here to help!
High Quality Products We offer the best products available, including our own brand of replacement windows.
Satisfaction Guarantee Our job is not done until you’re completely satisfied.

We've got connections.

We're certified by the industry’s leading manufacturers to offer a wide range of top quality options. View Our Credentials

Thermo-Seal Windows Siding & Roofing, Inc. is an A+ Rated BBB Accredited Business serving Westchester County, Rockland County, Nassau County, Suffolk County and Fairfield County. We offer multiple locations throughout the Tri-State Area to better serve our customers.

456 Sunrise Highway
Rockville Center, NY 11570
(866) 281-4567
Melville Office
68 South Service Road
Melville, NY 11747
(866) 281-4567
Rye Corporate Office
411 Theodore Fremd Avenue
Rye, NY 10580
(914) 925-3443
Stamford Office
263 Tresser Blvd
Stamford, CT 06901
(203) 663-3534