Thermo-Seal Windows, Siding & Roofing, Inc.
Siding Contractors for Long Island, Westchester, NYC, Bergen County, & Fairfield County
Expert siding installation & replacement—vinyl and fiber cement options, installed by certified pros. Get a free home estimate.
- Financing available
- Installation & replacement
- Local crews across NY, NJ & CT
• Siding Options •
High-Quality Siding
Our siding options extend past vinyl - we are capable of installing all types of siding materials including James Hardie fiber cement, aluminum, wood, fiberglass, stucco, stone, cedar shake and more!
| Siding Services | Popular Siding Types |
|---|---|
| Siding installation | Vinyl siding |
| Siding replacement | Fiber cement siding |
| Siding repairs | Cedar/wood/engineered |
Siding Repair Contractors
Thermo-Seal provides expert siding repair to restore your home’s protection, appearance, and energy efficiency. Whether you're dealing with storm damage, cracks, or warping, our in-house professionals deliver lasting results you can trust.
Siding Installation Contractors
We offer professional siding installation using premium materials from trusted brands like James Hardie and CertainTeed. Our certified team ensures flawless workmanship that boosts curb appeal and defends your home from the elements.
Siding Replacement Contractors
Upgrade your home with complete siding replacement that combines durability, style, and weather resistance. Thermo-Seal helps homeowners throughout the Tri-State area revitalize aging exteriors with top-tier products and expert installation.
Local Siding Company
As a trusted local siding company serving New York, New Jersey, and Connecticut, Thermo-Seal brings over 40 years of proven expertise to every project. Our in-house team ensures personalized service and reliable craftsmanship from start to finish.
Siding Brands Contractors
We install siding from the industry's leading brands, including James Hardie, CertainTeed, and Westlake Royal Building Products. These trusted names offer advanced performance, beautiful design options, and lasting value for your home.
Types of Siding
Choose from a variety of siding types, including fiber cement, vinyl, and natural cedar shake—each tailored to meet your home's needs and style. Thermo-Seal helps you select the best solution for lasting protection and standout curb appeal.
At Thermo-Seal, we believe siding should do more than protect—it should enhance curb appeal, improve energy efficiency, and provide lasting beauty homeowners can be proud of.
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Thermo-Seal Windows, Siding & Roofing, Inc.
Service Areas for Siding
Durable, Stylish, and Energy-Efficient Siding for Homes in the Tri-State Area
Siding can not only transform your home’s appearance, but it also serves an important purpose in protecting your home from the elements. At Thermo-Seal we install only the highest quality siding products. We are proud to be a CertainTeed 5-Star Contractor. Our friendly team will help you select the right color and style to achieve the desired look for your home!
New siding will make your home more attractive, easier to maintain, and more cost effective. Our professional installers are committed to your complete satisfaction.
Approach
At Thermo-Seal, our approach to siding combines premium materials, expert craftsmanship, and certified installation—delivering durable, energy-efficient, and visually stunning results for every homeowner we serve.
Mission
Our mission is to provide homeowners with high-quality siding solutions that protect, beautify, and add long-term value—using trusted brands like James Hardie, CertainTeed, and Westlake Royal.
Vision
We envision homes across the Tri-State with durable, stylish, and sustainable siding—setting the standard for exterior remodeling excellence while enhancing comfort, energy efficiency, and curb appeal.
Your Questions, Answered
Frequently Asked Questions
What siding materials does Thermo-Seal install?
Thermo-Seal installs a wide variety of premium siding materials, including fiber cement siding from James Hardie, vinyl siding, wood siding, aluminum, cedar shake, Perfection Shingles, stucco, stone veneer, and more. Our experts will help you evaluate the pros and cons of each to determine the best siding for your home’s architecture, climate, and maintenance preferences.
How long does siding installation typically take?
Most siding installation projects take between several days to a week, depending on the size of the home, the type of siding selected, and any necessary prep work. At Thermo-Seal, we use only full-time, in-house installers who work efficiently and cleanly, ensuring your project is completed on schedule with minimal disruption.
Will new siding improve my home’s energy efficiency?
Yes—modern siding installation not only enhances curb appeal but also improves insulation and reduces air infiltration. Siding products like fiber cement and insulated vinyl offer excellent thermal performance, helping maintain consistent indoor temperatures and potentially lowering energy bills.
How do I choose the right siding for my home?
The right siding depends on your goals—whether it’s durability, style, maintenance, or energy efficiency. Our team will walk you through each material's benefits during your consultation, showing real samples and completed projects. Whether you want the traditional look of vinyl, the resilience of fiber cement, or the natural charm of cedar, we’ll help you make a confident decision.
Does Thermo-Seal use subcontractors for siding installation?
No. All siding installation and replacement services are performed by Thermo-Seal’s trained, in-house professionals. We never outsource the work, which allows us to guarantee consistent quality, proper installation practices, and complete accountability on every project we complete.
How much does siding replacement cost in Long Island / Westchester?
The cost of siding replacement in Long Island and Westchester can vary depending on the size of your home, the type of siding material you choose, and the complexity of the installation. While we don’t publish pricing online, Thermo-Seal offers free, no-obligation estimates so you can understand your project scope clearly—with no hidden fees or sales pressure. Whether you're looking for fiber cement siding, vinyl siding, or cedar shake, we’ll walk you through the most cost-effective and durable options for your home.
Vinyl vs fiber cement siding: which is better in NY weather?
Both vinyl and fiber cement siding perform well in New York’s unpredictable climate, but each offers unique advantages. Vinyl siding is affordable, low-maintenance, and resists moisture, while fiber cement siding (like James Hardie) provides superior durability, fire resistance, and dimensional stability in extreme weather. For homeowners in areas like Long Island, Westchester, and Fairfield County, fiber cement siding is often preferred for its strength and ability to handle the region's freeze-thaw cycles and humidity—while vinyl remains a popular budget-friendly option. Our experts can help you decide which material best fits your home's needs.
How long does siding installation take?
Most siding installation projects are completed in just a few days, depending on the size and condition of your home and the material selected. At Thermo-Seal, we use **experienced in-house crews—not subcontractors—**to ensure your siding is installed efficiently, cleanly, and with minimal disruption to your daily life. We’ll give you a clear timeline during your free estimate and keep you informed every step of the way.
Do you offer financing for siding?
Yes, Thermo-Seal offers financing options for siding projects, including 0% interest plans for qualified homeowners. We believe top-quality siding should be accessible, which is why we partner with trusted lenders to provide flexible monthly payment options—so you can upgrade your home’s exterior now and pay over time. Our team will walk you through your financing choices during your consultation.
What are the signs I need siding replacement?
There are several clear signs your home may need siding replacement. These include visible cracks, warping, rotting, fading, increased energy bills, or moisture damage on interior walls. If your siding is over 20 years old or you’re noticing signs of weather-related wear—especially in coastal or storm-prone areas like Long Island or Westchester—it's time to schedule a professional inspection. Thermo-Seal’s experts can assess your current siding and recommend whether repairs or full replacement are the most cost-effective solution.
Schedule an Appointment
Contact us through our contact form and we’ll get back to you as soon as we can.
Siding
services we provide
Professional Exterior Remodeling Services
Windows
Enhance your home with energy-efficient windows from Andersen, Pella, and Harvey. Our expert installations improve comfort, reduce energy costs, and add timeless beauty to your living spaces.
Siding
Protect and beautify your home with durable siding solutions. We install fiber cement, vinyl, and wood siding for lasting performance, improved curb appeal, and energy efficiency.
Roofing
Safeguard your home with premium roofing systems. From GAF asphalt shingles to metal and tile roofing, our certified experts deliver strength, durability, and long-term weather protection.
Doors
Upgrade your entryways with stylish, secure doors from Therma-Tru and other leading brands. Our installations enhance curb appeal, improve security, and provide lasting performance for your home.
Gutters
Keep your home protected with seamless gutter systems designed to prevent water damage. Our expert installations ensure durability, efficiency, and reliable protection for your roof and foundation.
Certified. Trusted. Proven.
With Thermo-Seal, you receive expert craftsmanship and trusted credentials. We partner with top manufacturers and hold certifications to provide the best products. As a licensed and insured company, we safeguard your investment.
Our Edge.
Why Trust Thermo-Seal for your Windows?
Your windows deserve more than a quick install—they deserve the care, precision, and quality only experts can provide. At Thermo-Seal Windows, Siding & Roofing, Inc., we combine nearly four decades of experience, trusted brands, and certified installation to ensure your windows deliver beauty, efficiency, and protection for years to come.
Proven Experience & Reputation
With almost 40 years in the industry, Thermo-Seal has built a reputation for excellence, reliability, and trust, serving thousands of satisfied homeowners across the Tri-State area.
High-Quality Window Products
We install premium energy-efficient windows from Andersen, Pella, and Harvey, offering superior durability, stunning designs, and strong warranties that protect your home while enhancing curb appeal.
Certified & Professional Installation
As Andersen Certified Contractors, our skilled technicians deliver flawless installations with EPA-certified practices—ensuring lasting performance, efficiency, and complete homeowner satisfaction every time.
Experience the Thermo-Seal Difference
Reliable Exterior Remodeling in the Tri-State Area
Real Stories, Real Feedback
Our Client Reviews
Aaron and his team were fantastic! Our windows were ready 2 weeks earlier than expected and his team was always on time. They were pleasant to have around, were respectful of our space and cleaned up after themselves. We had a problem with rot in one of our walls and Aaron and his team helped us to fix it as part of the window installation, including finding a great electrician at the last minute. Thanks, Thermo-Seal! We're very pleased.
Rachel R.
I had a very good experience with Thermo Seal. Chose them after interviewing many others bc they're local, communicated efficiently and offered good midrange pricing + lifetime warranty. Aaron was great to work on setting up the contract and and then Fabio and his crew did a fantastic job with the installation. They came early, they finished 5 windows in 4-5 hours, they cleaned up. Fabio even helped me take care of another issue he found on the roof. Highly recommended.
Patryk B.
