4.6 
47 *The Angi rating for Window And Door Contracting companies in Cornwall, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window And Door Contracting needs.
*The HomeAdvisor rating for Window And Door Contracting companies in Cornwall, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window And Door Contracting needs.
Last update on July 13, 2026
Serving Cornwall, CT and surrounding areas
Approved (Corporate)
In business since 1992
Free estimates
Warranties offered
"Did windows, doors and gutters and we are very happy!!"
+41
Serving Cornwall, CT and surrounding areas
Approved
In business since 1961
Free estimates
Warranties offered
"We really like our new windows and sliding glass door. They were very professional and did nice work. Everything looks great!"
+40
Serving Cornwall, CT and surrounding areas
Approved
In business since 2018
Free estimates
Warranties offered
"Applied sun screen film to inside of large front storm window of my home. Good work."
+74
Serving Cornwall, CT and surrounding areas
Approved
In business since 2010
Free estimates
Customers say: Quick response
"We hired Elvin to repair a leaking window. Not only did he do that, but he offered to replace the screen which had been damaged by birds. He's truly an awesome guy and a top notch craftsman! We would hire him again in a second."
Serving Cornwall, CT and surrounding areas
Approved (Corporate)
In business since 2000
Free estimates
Warranties offered
"I have to say that Matt, Dave and Rich were amazing! They were professional, friendly and cleaned up after themselves! I will tell anyone I know looking for windows to call Rite Window for sure. Happy customer Darlene"
+55
Serving Cornwall, CT and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 2007
Free estimates
Warranties offered
"Renewal by Andersen of Wyoming did an incredible job with installing windows in our home. Thank you to the team who did the install and to the company for creating these exceptional windows."
+2
Serving Cornwall, CT and surrounding areas
Approved
In business since 1985
Free estimates
Emergency services offered
"Mike replaced 9 double hung windows in my home with Andersen replacement windows. The quality of work was excellent and the price was very competitive. Mike is very professional and was a pleasure to do business with. He returned my calls immediately, showed up on time, provided a written estimate, and patiently answered all of my endless questions. I highly recommend Hammer Time Contracting and will be hiring them again for future home improvement projects."
+74
Serving Cornwall, CT and surrounding areas
Approved
In business since 1999
Free estimates
Emergency services offered
"The process was seamless and quick. Everyone involved in the project was helpful and friendly. It was done in one afternoon and our roof looks great!"
Serving Cornwall, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2005
Free estimates
Credit card accepted
"They did a wonderful job roofing and siding my garage and replacing my front porch. I plan on hiring them again next year."
+53
Serving Cornwall, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2006
Free estimates
Emergency services offered
"Replaced my bilco door and fixed the concrete base it was on. Put down membrane in my crawl space (encapsulated it) and insulated the crawl space. Prompt, courteous, reasonable pricing. Would absolutely hire them again"
+37
From average costs to expert advice, get all the answers you need to get your job done.
Discover the window-to-door conversion cost. Learn about average prices, cost factors, and tips to save on your window-to-door conversion project.
Are there holes in your screen and a squeak in your hinges? We break down how much screen door repair costs from small fixes to total replacement.
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Wondering who to hire for door or window screen installation? See which pros to call, compare options, and get the job done right.
Our guide walks you through all the questions you should ask a window replacement contractor before hiring them to replace the windows in your home.
If you need to install a storm door, you can call a local contractor, construction company, or hardware store to get the job done.
