Doors
Door Installation
40 Years of Experience
Certified Professionals
Superior Workmanship with Proven Reputation
Stress-Free Process
Thermo-Seal Windows, Siding & Roofing, Inc.
Door Installation — Trusted by Tri-State Homeowners for Over 40 Years
Looking for expert door installation that enhances your home’s security, energy efficiency, and curb appeal? Thermo-Seal offers premium door installation services backed by 40+ years of experience, certified craftsmanship, and top-rated brands like Therma-Tru, Andersen, Pella, and Harvey. Whether you need a stylish new entry door, a durable storm door, or a sleek sliding glass upgrade, we provide seamless, professional door installation for homeowners across New York and Connecticut.
As the Tri-State’s trusted remodeling experts, Thermo-Seal delivers more than just doors—we install confidence, quality, and long-term performance in every project.
DOORS
Experience the Difference with Thermo-Seal Door Installation
When it comes to door installation, the right fit, material, and craftsmanship make all the difference. At Thermo-Seal, we don’t just replace doors—we help you reimagine the way your home looks and functions. Every door installation we perform is handled by full-time, in-house professionals—never subcontractors—so you receive reliable workmanship from start to finish.
We install a wide variety of exterior doors to suit your home’s style and needs, including:
- Entry doors for enhanced security and curb appeal
- Sliding glass doors for beautiful indoor-outdoor transitions
- French doors to bring elegance and light into any room
- Storm doors for added weather protection and insulation
Our team will guide you in choosing the best materials—from wood to fiberglass to steel—and ensure your new door is installed with precision, care, and long-term durability in mind.
Solving Homeowner Pain Points with Precision Door Installation
A professionally installed door isn’t just about appearance—it’s about solving real problems that affect your comfort, safety, and energy bills. Poorly fitted or aging doors can lead to drafts, security risks, and rising utility costs.
Thermo-Seal’s expert door installation helps solve these common homeowner issues by:
- Improving energy efficiency with airtight seals and insulated materials
- Enhancing home security with reinforced locks and durable construction
- Reducing noise and drafts for a quieter, more comfortable interior
- Boosting curb appeal with modern, stylish designs tailored to your home
We bring the same meticulous attention to detail that earned us elite certifications like Andersen Premier Certified Contractor and the GAF Master Elite title. Simply put, Thermo-Seal installs doors you can count on.
Who Benefits Most from Thermo-Seal Door Installation?
Our door installation service is ideal for:
- Homeowners replacing outdated or damaged doors
- Families renovating for style, security, or energy savings
- Buyers preparing their property for resale and needing a curb appeal upgrade
- Anyone seeking dependable service from a company with a proven track record
Whether you own a charming historic property or a modern suburban home, Thermo-Seal’s door installation service is customized to meet your goals and exceed your expectations.
Long-Term Value That Goes Beyond the Installation
With Thermo-Seal, your benefits don’t stop when the door closes.
Our expertly installed doors are designed to perform for decades, offering:
- Reduced energy bills thanks to thermal efficiency
- Less maintenance due to weather-resistant finishes and materials
- Higher property value from a refreshed exterior look
- Peace of mind knowing the job was done right—by certified, in-house pros
You’ll feel the value of your new door every time you open it.
Why Choose Thermo-Seal for Door Installation?
Thousands of satisfied homeowners across the Tri-State area have trusted Thermo-Seal since 1985. Here’s why:
- 40+ Years of Experience delivering high-quality exterior remodeling
- Certified Installers Only — we never use subcontractors
- Top Brand Partnerships including Therma-Tru, Andersen, Pella, and Harvey
- Elite Certifications like GAF Master Elite & Andersen Premier Certified Contractor
- Award-Winning Service with an A+ BBB rating and Angi Super Service Award
We don’t just install doors—we raise the standard for what homeowners can expect from a remodeler.
What is the average cost to install a door?
The cost of door installation can vary widely depending on the type of door, material, size, hardware, and any customizations involved. Entry doors, for example, often require additional framing or reinforcement for security, while sliding or French doors may involve more labor and structural preparation.
At Thermo-Seal, we offer free, no-hassle in-home estimates so you can get an accurate quote tailored to your specific needs—no guesswork, no pressure. While we don’t post pricing online, our team is transparent, professional, and always focused on delivering the best value in the Tri-State area.
What do you call someone who installs doors?
A professional who performs door installation is typically referred to as a door installer, but depending on their specialization, they may also be called a carpenter, contractor, or remodeling professional. At Thermo-Seal, our door installers are full-time, in-house experts trained and certified by the industry’s leading manufacturers, ensuring a level of consistency, care, and professionalism that sets us apart from other remodelers.
FAQs: Door Installation
How long does a door installation take?
The time required for door installation varies based on the door type and project complexity. A standard replacement may be completed in just a few hours, while more customized installations—such as French doors or entry doors with sidelights—can take longer. Thermo-Seal’s team will give you a clear timeline during your free in-home consultation.
Can you install a new door in an existing frame?
Yes, in many cases, Thermo-Seal can install a new door into your existing frame, depending on its condition and size compatibility. However, for optimal results, especially in older homes, we often recommend replacing both the door and frame to improve energy efficiency, fit, and security.
What types of doors do you install?
We install a wide range of doors, including entry doors, storm doors, sliding glass doors, and French doors. We work with trusted brands like Therma-Tru, Andersen, Pella, and Harvey, offering materials such as fiberglass, steel, wood, and vinyl to match your home’s style and needs.
Do your door installations come with a warranty?
Yes. All of our door installation projects are backed by manufacturer warranties and Thermo-Seal’s own workmanship guarantee. We’ll walk you through the specific warranty details based on the brand and product you choose.
How do I schedule a door installation with Thermo-Seal?
Scheduling is easy. Simply call us at (866) 901-6808 or fill out our online form to request your free, no-obligation estimate. One of our certified professionals will visit your home, assess your needs, and provide a clear, upfront quote.
Ready to upgrade your home with professional door installation?
Contact Thermo-Seal today to schedule your free in-home consultation. Experience the difference that certified craftsmanship, premium products, and four decades of expertise can make.
Call us today at
(866) 901-6808 or
Contact us today to schedule a project consultation.
Request A Free Estimate
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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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