Expert remodeling
Window Installation & Replacement in Westport, CT
40 Years of Experience
Certified Professionals
Superior Workmanship with Proven Reputation
Stress-Free Process
Thermo-Seal Windows, Siding & Roofing, Inc.
Window Replacement in Westport That Elevates Coastal Style and Efficiency
Searching for expert window installation in Westport, CT? Thermo-Seal has served homeowners throughout Fairfield County for over 40 years, providing energy-efficient window solutions that complement Westport’s coastal architecture and seasonal weather. Whether you're near Compo Beach or in the Greens Farms area, our window services in Westport are designed to boost comfort, efficiency, and visual appeal.
All installations are completed by our in-house, factory-trained professionals—never subcontractors—ensuring precision, consistency, and top-tier results. If your windows are drafty, worn, or difficult to operate, Thermo-Seal installs high-performance windows in Westport that deliver long-term value.
Thermo-Seal Exterior Remodeling
Full-Service Window Installation in Westport Built for Year-Round Performance
From salty sea breezes to snowy winters and hot summers, Westport homes face a wide range of weather conditions. That’s why we install premium windows from brands like Andersen—designed for long-lasting durability and optimal insulation.
✔ Installed by our in-house, certified experts
✔ Engineered for Westport’s coastal and seasonal climate
✔ Available in various styles to suit classic and contemporary homes alike
Why Westport Homeowners Rely on Thermo-Seal for Window Replacement
With more than 20,000 completed projects since 1985, Thermo-Seal is a trusted name in window installation across Fairfield County. Westport homeowners choose us for expert craftsmanship, quality materials, and reliable service.
Why Westport residents choose Thermo-Seal:
✔ Andersen Certified – Specialists in energy-efficient, top-rated window systems
✔ No Subcontractors – All work completed by our trained, in-house team
✔ A+ BBB Rating – Known for honest, high-quality service across the region
✔ Weather-Resistant Windows – Built to withstand wind, moisture, and temperature shifts
✔ Energy Efficiency – Helps reduce heating and cooling costs throughout the year
Whether you’re near downtown Westport or along the shoreline, Thermo-Seal delivers windows that blend performance with timeless design.
Window Replacement in Westport That Solves Everyday Home Issues
Old or failing windows can cause drafts, moisture problems, and energy loss. Thermo-Seal installs windows in Westport that directly address these common concerns with dependable, modern solutions.
✔ Cold Air or Leaks? Our windows seal tight and insulate your home
✔ Difficult to Open or Close? We install smooth-operating, user-friendly designs
✔ High Utility Bills? Energy-saving features help reduce monthly costs
✔ Frequent Maintenance? Choose durable, low-maintenance materials that last
Thermo-Seal’s window installation in Westport improves comfort, efficiency, and aesthetics—all with the craftsmanship your home deserves.
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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Service Area
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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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