Custom Window Replacement in Westhampton, NY

Enhance the comfort, beauty, and efficiency of your Westhampton home with luxury window solutions from Thermo-Seal. Whether you’re overlooking the bays near Dune Road, upgrading a modern build in Westhampton Beach, or restoring a traditional home in Remsenburg, our team delivers expert window installations designed to withstand coastal elements while enhancing architectural charm. For over 35 years, we’ve helped Westhampton homeowners elevate their living spaces with energy-efficient windows tailored to their property’s style and location.

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Schedule Your Free In-Home Consultation

Window Styles Crafted for Westhampton Living

We offer a full range of styles, all ENERGY STAR® rated and professionally installed:

  • Double-Hung Windows – Easy to clean, classic design
  • Casement & Awning Windows – Superior ventilation and seal
  • Bay & Bow Windows – Dramatic curb appeal and light
  • Sliding Windows – Smooth operation and space-saving
  • Picture Windows – Expansive views, maximum efficiency

Every window is built with advanced glass packages to reduce heat loss, block UV rays, and lower your energy bills.

BAY & BOW

CASEMENT

DOUBLE-HUNG

GARDEN

PICTURE

SLIDING

Bay & Bow Windows in Westhampton

Elegant Views, Expanded Space

 

For homes along Montauk Highway or with scenic backyard landscapes, bay and bow windows add dramatic views and elegant curves. These styles are popular for creating cozy reading nooks, enhancing natural light, and maximizing interior space with an upscale finish.

 

 

Casement Windows in Westhampton

Sleek Design, Maximum Ventilation

Capture fresh ocean breezes and uninterrupted views with casement windows, perfect for properties along South Road or near the bayside. Their tight seal and swing-open design offer superior ventilation and weather resistance, ideal for Westhampton’s shifting coastal conditions.

Built with advanced sealing technology and high-performance glass, they deliver outstanding thermal insulation and weather resistance, even in Long Island’s coastal climate. Customize your look with multiple frame finishes, grille patterns, and hardware options for a clean, contemporary aesthetic.

Double-Hung Windows in Westhampton

Classic Style, Modern Efficiency

Ideal for the classic beach houses and shingle-style homes found throughout Westhampton Beach and Remsenburg, double-hung windows provide a timeless aesthetic with modern ease of use. Their tilt-in sashes allow for effortless cleaning, making them perfect for second homes, and the high-efficiency glass helps reduce energy costs throughout all seasons.

Designed with two operable sashes that tilt in for easy cleaning, these windows offer versatile ventilation, excellent airflow control, and low-maintenance convenience. Each unit is built with multi-chambered frames, energy-efficient glass, and weather-tight seals to enhance insulation and reduce energy costs year-round. With a variety of finishes, grille designs, and hardware options, double-hung windows are a smart, stylish upgrade for any room.

Garden Windows in Westhampton

Bring the Outdoors In

Bring in more light and life with a garden window, ideal for Westhampton kitchens and breakfast nooks. Homeowners love the extra shelf space for fresh herbs, small plants, or coastal decor, with a design that complements both traditional and contemporary styles. With operable side vents for ventilation, energy-efficient glass, and durable, low-maintenance materials, our garden windows offer both form and function. Enjoy panoramic views and extra shelf space while brightening up your interior with natural light—all with expert installation and long-lasting performance tailored for Long Island homes.

Picture Windows in Westhampton

Expansive Views, Maximum Efficiency

Whether overlooking the Moriches Bay or set above a modern staircase, picture windows offer uninterrupted views with exceptional energy efficiency. Ideal for luxury estates and newly built homes, these fixed windows create a clean, architectural focal point inside and out. These fixed, non-operable windows are perfect for living rooms, stairwells, or any space where you want to highlight the scenery and minimize maintenance. Built with high-performance insulated glass and airtight seals, our picture windows enhance energy efficiency, reduce outside noise, and deliver a clean, modern aesthetic. With customizable sizes and frame finishes, Thermo-Seal’s picture windows are a stylish, energy-smart choice for Long Island homes.

Sliding Windows in Westhampton

Sleek, Space-Saving Performance 

Sliding windows are a favorite for guesthouses, pool cabanas, or modern waterfront homes near Dune Road. They offer smooth operation, excellent airflow, and a minimalist profile—perfect for tight spaces or areas where maximizing view and ventilation matters. These horizontally gliding windows feature smooth-operating tracks, low-profile frames, and wide glass areas that bring in natural light while maintaining excellent insulation. With dual operable sashes and easy-to-remove screens, sliding windows are great for rooms where space is tight but ventilation is essential. Built to resist drafts, moisture, and wear, they deliver long-lasting performance with minimal upkeep—a smart, stylish solution for any home.

Get Your Free Quote Today

 

Ready to upgrade your windows? Contact Thermo-Seal now for a free, no-obligation estimate. Our local team is ready to help you choose the perfect windows for your home and budget.

Call 631-849-0434 or fill out the form to get started!

Precision Window Installation for Westhampton Homes

At Thermo-Seal, our installation process is designed for seamless results with minimal disruption. Whether you’re on a quiet Remsenburg street or near bustling Main Street in Westhampton Beach, we bring white-glove service and attention to detail to every project.

  • Fully licensed and insured in Suffolk County
  • Skilled crews trained in historic, coastal, and custom home installations
  • Clean, respectful work sites with efficient scheduling
  • Every project is backed by manufacturer warranties and our workmanship guarantee

We don’t just install windows, we enhance homes, preserve value, and protect your investment.

 

Five-Star Reviews

Why Westhampton Homeowners Choose Thermo-Seal

Discerning homeowners across Westhampton, Remsenburg, and Westhampton Beach trust Thermo-Seal for our combination of quality, service, and local expertise. Here’s why we stand out:

✔️ Over 35 Years of Local Experience
We’ve worked on everything from historic shingle-style cottages to new luxury developments in the Hamptons, tailoring solutions to each property’s needs.

✔️ Built for Coastal Living
Our windows are engineered for Long Island’s salt air, humidity, and seasonal storms, offering lasting performance and protection in Westhampton’s coastal environment.

✔️ Design-Savvy Material Selection
With a wide range of frame finishes, grille patterns, and energy-efficient glass packages, we offer windows that seamlessly blend beauty and performance, making them perfect for both year-round residences and second homes.

✔️ Private, Respectful, On-Time Service
We value your time, privacy, and property. Our team arrives on schedule, communicates clearly, and ensures every detail is executed to perfection.

✔️ Warrantied Work. Peace of Mind.
Every installation is backed by product warranties and our commitment to quality, giving you confidence long after the job is complete.

“I had a very good experience with Thermo-Seal.  Chose them after interviewing many others because they’re local, communicated efficiently, and offered good midrange pricing and lifetime warranty. The crew did a fantastic job with the installation. They came early and finished 5 windows in 5 hours, and then they cleaned up. Highly recommended!”

Patrick B.

“We just completed a window and siding job for our home with Thermo-Seal. We are very impressed and satisfied with the quality of their products as well as the installation. I would recommend this company & I would use them again in the future if needed.”

Mindy L.

“The crew was a pleasure to work with, and we love our new windows. The installation was efficient, and the team was very professional. I’ve seen a difference in my heating bill since the install, which was our primary goal so we are very happy so far! I will work with Thermo-Seal again for a front door replacement when the time comes.”

Bonnie K.

“We hired Thermo-Seal for new windows and siding and I could not be happier! Their team is on time, professional, and meticulous about their work. You can tell they take pride in their output and ensure things are done correctly the first time around. The project completed ahead of schedule and we were kept in the loop the entire time. Very happy with their work and highly recommended!”

Sarah C.

“We were referred to Thermo-Seal by a neighbor who was very pleased with the results. We replaced seven windows and a sliding patio door are thrilled with the results and how much they enhance the appearance of our home. Without hesitation, we recommend Thermo-Seal for your home improvement projects.”

Frank D.

“Cannot believe how stress-free an experience it was dealing with Aaron and his team. Aaron was very patient with our multiple questions and never any sales pressure. The installation was clean, quiet and the installation team friendly and helpful. The windows were installed a few weeks before they were promised and there were no surprises. We will be strongly recommending Thermo-Seal to friends looking for replacement windows.”

David B.

Contact Us

631-849-0434

68 South Service Road Melville , NY 11747