A white background with a few lines on it

J.C. TOnnotti WINDOW COMPANY

A Name You Can Rely On

Windows + Doors + Siding + Roofing + More

For over 40 years, J.C. Tonnotti Window Company has been Connecticut’s trusted expert in windows, doors, roofing, siding, and complete exterior remodeling. With in-house crews, top-quality materials, and a commitment to craftsmanship, we deliver seamless, stress-free installations backed by strong warranties and exceptional service.

A dog wearing a hat and a sweater is on a leash.
A white background with a few lines on it

J.C. Tonnotti Window Company

A Name You Can Rely On

Windows + Doors + Siding + Roofing + More

For over 40 yearsJ.C. Tonnotti Window Company has been Connecticut’s trusted expert in windows, doors, roofing, siding, and complete exterior remodeling. With in-house crews, top-quality materials, and a commitment to craftsmanship, we deliver seamless, stress-free installations backed by strong warranties and exceptional service.

A dog wearing a hat and a sweater is on a leash.
A close up of a pink ribbon on a white background.
A sticker that says harvey we are connecticut 's # 1 harvey window installer
J.C Tonnotti logo

CENTRAL CT'S TRUSTED WINDOW, DOOR, ROOFING, & SIDING CONTRACTORS

Local. Trusted. Family owned SINCE 1979

J. C. Tonnotti Window Company is a family owned and operated company, established in 1979, offering a variety of home improvement services for over 40 years, ranging from installation of custom ordered windows, doors, siding and roofing. We have helped homeowners across the state of Connecticut transform their homes with a level of quality craftsmanship and excellent customer service that gives you peace of mind.

We pride ourselves on putting our best efforts into every project, whether it’s installing energy-efficient replacement windows, preserving and protecting your home with a new roof, refacing your home with new siding, or refreshing an entryway with a new door system.

LEARN MORE
A close up of a pink ribbon on a white background.

TESTIMONIALS

We Recently Sat Down With J.C. Tonnotti Clients to Ask Them How Their Experience Was, Here's What They Had to Say:

A white background with a few lines on it

Why CT Homeowners ARE CHOOSING JC TONNOTTI

A black and white silhouette of a wrench in a gear on a white background.
True In-House Crews – No Subcontractors

Unlike many competitors who outsource labor, J.C. Tonnotti employs full-time, in-house crews for every project. This ensures consistent quality, expert craftsmanship, and accountability from start to finish—giving homeowners peace of mind knowing exactly who is working on their home.

Complete One-Stop Exterior Remodeling

From windows and doors to roofing, siding, and sunrooms, J.C. Tonnotti measures, designs, installs, services, and warranties every project under one roof. Customers don’t have to juggle multiple contractors—we handle everything with professional trucks, expert installers, and dedicated office staff to ensure a seamless experience.

A hand is holding a heart with a person in it.
40+ Years of Local, Family-Owned Excellence

Founded in 1979, J.C. Tonnotti has been a trusted name in exterior remodeling for over 40 years. Unlike newer companies that come and go, we’ve built a strong reputation in Connecticut, operating from the same Southington location for decades. Homeowners choose us because they know we’ll be here to stand behind our work for years to come.

A black and white drawing of a circle with a pin in the middle.
Fast, Professional Installations with Strong Warranties

Our team specializes in efficient, high-quality installations—often completing projects like window and roof replacements in just one day. We also back our work with manufacturer warranties and our own service guarantees, so customers can trust their investment is protected for the long haul.

OR GIVE US A CALL

J.C Tonnotti logo

Comprehensive Solutions for Every Home Improvement Need

Comprehensive Home Improvement Services – From Stunning Windows to Durable Roofing, Designed to Elevate Your Home’s Comfort, Style, and Value

window services in ct

Windows

Upgrade your home with energy-efficient, high-quality windows from J.C. Tonnotti. We offer expert installation of double-hung,  casement,  bay,  bow, and custom windows to enhance curb appeal, improve insulation, and increase home value.

A light blue front door with stained glass windows on a house.
Doors

From entry doors to patio and storm doors, we provide top-tier door installations that combine security, style, and durability. Choose from a variety of materials, We provided the best fiberglass  insulated doors, for a perfect fit for your home.

A close up of a roof with a light on it
Siding

Protect and beautify your home with our premium siding solutions. Whether you prefer vinyl, fiber cement, or insulated siding, our expert team ensures a seamless installation that enhances energy efficiency and curb appeal.

An aerial view of a large house with a large driveway.
Roofing

A strong roof is essential for protecting your home. We specialize in roof replacements and installations, using high-quality materials from GAF, CertainTeed, and Tamko to ensure durability, longevity, and superior weather resistance.

A screened in porch with a lot of windows on the side of a house.
Sun and Patio Rooms

Expand your living space with custom sunrooms and patio enclosures. Whether you want a cozy four-season room or a stylish patio enclosure, we design and install functional, beautiful spaces tailored to your home’s style.

DON'T SEE WHAT YOU NEED? WE ALSO PROVIDE SERVICES ADDITIONAL TO WHAT YOU SEE HERE
SEE ALL SERVICES
A white background with a few lines on it

Trusted by Homeowners Across Connecticut

Discover Why Homeowners Across Connecticut Choose Us for Quality, Reliability, and Exceptional Results

A close up of a pink ribbon on a white background.
J.C Tonnotti logo

See the Difference Quality Makes – Browse Our Recent Projects

Explore Our Portfolio of Transformative Projects and See How We Bring Quality and Craftsmanship to Every Home

A close up of a pink ribbon on a white background.
A white background with a few lines on it

Expert Tips and Insights for Homeowners

Discover Expert Advice, Industry Trends, and Practical Tips to Help You Make Informed Decisions About Your Home Improvement Projects

Icicles are hanging from the roof of a house.
March 3, 2025
It is important to take steps to prepare your home for winter weather and reduce the potential winter damage to your home.
A group of people are posing for a picture in front of a truck of jc tonnotti
March 3, 2025
J.C. Tonnotti Window Company extends winter wishes for a cozy 2025 winter and reminds homeowners to ensure a safe and warm home.
A man wearing a hoodie that says jc to notti is standing in front of a red door.
January 27, 2025
Thinking about upgrading your home? Start with the front door! Here are the top benefits of replacing your front door.  Your front door is more than just an entry point—it’s a critical feature of your home. Replacing an old or outdated front door offers significant advantages, enhancing your home’s security, energy efficiency, and curb appeal. Here’s why upgrading your front door can make a big difference. Top 3 Benefits of a New Front Door 1. Enhanced Security As the primary entry point for most homes, the front door is also the most common target for intruders. If you live in an older Connecticut home with an antique door, it might not offer the level of security needed to protect your family. A modern, secure front door acts as a solid barrier, reducing the risk of break-ins and giving you peace of mind. 2. Improved Energy Efficiency In addition to boosting security, a new front door can help you save on energy bills. Older doors often have cracks or poor insulation, allowing drafts and temperature fluctuations to affect your home. An energy-efficient front door prevents outside air from creeping in and inside air from escaping, making your home more comfortable year-round while lowering heating and cooling costs. 3. Boosted Curb Appeal Your front door is one of the first things visitors notice, making it a key component of your home’s curb appeal. An updated, high-quality front door can dramatically enhance the look of your house, setting the tone for the rest of your home’s appearance. (Check out Therma-Tru for inspiration on how to boost curb appeal with the right door.) Front Door Installations by J.C. Tonnotti For a durable, energy-efficient option, consider a Therma-Tru fiberglass door. These doors are known for their strength, weather resistance, and ability to prevent drafts—helping you avoid costly energy bills. At J.C. Tonnotti, we install front doors made of wood, steel, and fiberglass. Here’s how each option compares: Wood Doors: While wood doors offer timeless beauty, they are prone to dents, scratches, and damage over time, which may diminish their long-term functionality. Steel Doors: Steel doors provide a budget-friendly option, but they can lack visual appeal and are also susceptible to dents. Fiberglass Doors: Fiberglass doors, like those from Therma-Tru, combine durability with aesthetics. They resist scratches, dents, and other damage, all while offering a stylish look that complements your home’s design. Plus, they won’t interfere with seasonal decorations, making them a versatile choice for homeowners. Not sure which type of front door is right for you? We can help! Our team at J.C. Tonnotti specializes in installing Therma-Tru fiberglass doors that deliver superior security, energy efficiency, and curb appeal. Contact J.C. Tonnotti today to replace your front door and enhance your home’s value and comfort.
SEE OUR BLOGS
A red purse with a handle on a white background.

LOCATED IN SOUTHINGTON,

Serving Central CT for Over 40 Years

Proudly Serving Homeowners Across Southington and Surrounding Areas

At J.C. Tonnotti, we proudly serve homeowners throughout Central Connecticut, providing expert exterior remodeling solutions, including windows, doors, roofing, siding, and exterior wood rot repair. Based in Southington, CT, we primarily service areas within a 45-minute radius, ensuring prompt, reliable service to communities such as Hartford, New Haven, Waterbury, and surrounding towns. With over 40 years of experience, we are a trusted name in the industry, delivering high-quality craftsmanship and superior customer service to homeowners across the region.


Wondering if we service your location? You can always  give us a call to make sure.

Share by: