Expert remodeling
Roofing Installation & Replacement in Long Island, NY
40 Years of Experience
Certified Professionals
Superior Workmanship with Proven Reputation
Stress-Free Process
Thermo-Seal Windows, Siding & Roofing, Inc.
Roofing in Long Island That’s Built to Withstand the Elements and Time
Looking for expert roofing in Long Island, NY? For over 40 years, Thermo-Seal has provided durable, weather-resistant roof installation and replacement for homeowners across Nassau and Suffolk Counties. Whether your home is near the water in Sayville or inland in Syosset, we install roofing systems that enhance curb appeal and offer dependable protection year-round.
We don’t subcontract. Every roof is installed by our own factory-trained team, ensuring accountability, consistent quality, and peace of mind. If your roof is aging, damaged, or showing signs of wear, Thermo-Seal delivers roofing services on Long Island that are built to last.
Thermo-Seal Exterior Remodeling
Full-Service Roofing in Long Island Designed for Northeast Weather
From harsh winter storms to salty ocean air and humid summers, Long Island homes need roofing built for resilience. That’s why we install premium roofing systems from GAF, designed to perform in coastal and suburban environments alike.
✔ Installed by our certified, full-time professionals
✔ Roofing materials engineered for Long Island’s changing climate
✔ Options to match traditional, modern, and coastal architecture
Why Long Island Homeowners Choose Thermo-Seal for Roofing
With more than 20,000 exterior projects completed since 1985, Thermo-Seal has become a trusted name in roofing across Long Island. Homeowners depend on us for long-lasting materials, expert workmanship, and reliable service.
Why Long Island residents count on Thermo-Seal:
✔ GAF Master Elite Certified – Recognition held by a top percentage of contractors nationwide
✔ No Subcontractors – All work handled in-house for consistency and control
✔ A+ BBB Rating – Trusted by thousands of Long Island homeowners
✔ Built to Last – Roofing that withstands wind, moisture, and heat
✔ Energy Efficiency – Improved attic ventilation and insulation for better comfort
From Patchogue to Port Washington, Thermo-Seal delivers roofing on Long Island that combines function and visual appeal.
Roofing in Long Island That Solves Real Homeowner Problems
A failing roof isn’t just a cosmetic issue—it can lead to leaks, energy loss, and costly repairs. Thermo-Seal installs roofing in Long Island that solves these problems and adds lasting value to your home.
✔ Roof Leaks? Our systems create a watertight barrier to protect your home
✔ Missing or Damaged Shingles? We replace them with durable, weather-rated options
✔ Poor Ventilation? Our roofs help regulate temperature and reduce moisture buildup
✔ Outdated Roofing? Full replacements enhance both performance and curb appeal
Thermo-Seal’s roofing solutions in Long Island are designed for long-term protection, energy efficiency, and stress-free ownership.
Schedule Your Free Estimate Today
Ready to transform your home’s exterior with expert remodeling that lasts? Contact Thermo-Seal today for a free in-home estimate and experience why thousands of homeowners across New York and Connecticut trust us for windows, siding, roofing, doors, and more.
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Contact Info.
Phone Number:
Email Address:
Showroom:
456 Sunrise Highway, Rockville Center NY 11570 - (516) 689-7214
Rye Corporate Office:
411 Theodore Fremd Avenue, Rye NY 10580 - (914) 635-3748
Stamford Office:
263 Tresser Blvd., Stamford, CT 06901 - (203) 990-1812
Melville Office:
68 South Service Road., Melville NY 11747 - (631) 710-6937
CLIENT REVIEWS
What Our Clients Are Saying About Us
Thermo-seal Windows provides exceptional customer service alongside high-quality products. Recently, I had the majority of my home's windows replaced by Aaron's team, and their performance was nothing short of impressive. They arrived on time, maintained a tidy work area, and dedicated themselves to ensuring a perfect installation of the windows.
Aaron and his team were amazing, from start to finish! They worked with us every step of the way and Aaron was always just a call or text away to answer any questions we had. The windows are perfect and we love them. We highly recommend working with Aaron and his team. They are professional, courteous and their work is top notch!
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