Contact Information
office@jctonnotti.com
205 Bristol Street, Southington, Connecticut 06489, United States
WE'VE INSTALLED HUNDREDS OF Custom designed sun and patio rooms THROUGHOUT CONNECTICUT
J.C. Tonnotti Window Company installs installs EZ porch enclosure systems to create custom sun rooms, patios, 3 or 4 season porches in the Connecticut area.
Convert an existing porch/extra space or an existing deck to a 3 or 4 season sunroom.
Many patio rooms can be used in conjunction with other exterior products including: vinyl railings, composite decking, and Azek.
Features include:
- 3 season or 4 season windows
- Single pane glass or double insulated glass
- Variety of window style options
- Choice of 3 or 4 season entry doors
- Choice of windows & design
- Customizable to any space
Classic Vinyl Enclosure System
(Non-Structural Wall System)
Can be used for remodeling and new construction products
Features include:
- 3-1/2 season enclosure system
- Possible installation between structural columns under existing roof system
- Quick and easy conversion from an existing porch into a beautiful living area
- Thermally designed wall system to maximize energy efficiency
- Custom building to fit existing opening, maximizing views and speeding installation
- Lifetime/20 year glass warranty
For more information about our services or to book a free estimate, give us a call at (860) 621-1642 or complete the form below and we will get back to you.
GET A FREE ESTIMATE
For more information about our services or to book a free estimate, give us a call at (860) 621-1642 or complete the form below and we will get back to you.
Trusted by Homeowners Across Connecticut
Real reviews from satisfied customers who love our craftsmanship, quality, and service.
WHY CONNECTICUT HOMEOWNERS CHOOSE JC TONNOTTI
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.
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.
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.
Family Owned & Operated for Over 40 Years
Reach out to us for personalized solutions and expert assistance.
Our Mission at J. C. Tonnotti Window Company is to exceed our client’s expectations by offering superior craftsmanship and outstanding customer service.
Contact Information
205 Bristol Street, Southington, Connecticut 06489, United States
CT Home Improvement Lic 614190
GET A FREE ESTIMATE