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TRUSTED BY GROTON, CT HOMEOWNERS

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    Average homeowner rating
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    Verified window and door contracting services reviews

Top-Rated Window and door contractors in Groton - Updated Nov 2026

Quality Restoration, LLC
4.7(
34
)
Hardware, Latches & Tracks (Window) - Repair or ReplaceDoors (Exterior) - Install or Replace - For BusinessDoors (Interior) - Install or Replace - For Business+4 more

Serving Groton, CT and surrounding areas

Approved

In business since 2010

Free estimates

Customers say: Quick response

"Elvin is great. He fixed my wood double front doors and applied paint that I had picked out, as well as new handles/lock. He took his time, was very polite, and made sure everything was in order before in left. My front doors look amazing. Will be hiring him again for more work around the house. Also, his pricing was very reasonable and on point for the amount of repair and painting work he did."
Response time7 hrs
7 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for A1 Home Improvement, LLC
A1 Home Improvement, LLC
4.8(
19
)
New Windows - 6 +New Windows - 2 - For BusinessNew Windows - 3-5+4 more

Serving Groton, CT and surrounding areas

Approved (Corporate)

In business since 1980

Free estimates

Emergency services offered

"Roofing its something no home owner ever wants to do, but most have to go through. I won't even lie I wasn't even planning on getting a new roof, but Dale Knocked on my door and thats where the process started. My roof did go through insurance & aside from signing paper work/paying my deductible A1 handled everything. Obviously specific details from the insurance goes to you and then given to A1. Its not a short process and there is paperwork you have to sign, but all In all it did take me about 4 to 5 months where the process was started to roof replacement. Dale handled interactions with showing my the conditions of my roof and how to go about getting it put through the insurance. The only hiccup was that I have solar panels and I did feel like they where taken down to early (almost 5 months off), but I made my concerns known and one of the Managers called me and credited me $500 bucks (100 per month) that the panels where off. They did tell me setbacks in productions and things happen, but made me happy by giving me this credit. Didn't fight me on it, and didn't make me feel like I was just an insurance check on the other end. You can trust A1 home improvement with your home. I would like to thank Dale for his work & all the others that helped me throughout one of the most stressful process there can be for a house."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+3

Response time2 days
Response rate100%
12 neighbors recently requested a quote
Avatar for Capital Construction Contracting South
Capital Construction Contracting South
4.2(
69
)
New Windows - 6 +

Serving Groton, CT and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

"Iâ ve utilized Capital Construction for numerous projects,most recently to re-stain my front doors, paint the exterior trim, paint my kitchen and add decorative trim. They provide a detailed estimate of the project, arrive promptly and ready to work. Their staff is courteous and always tidy up when the work day is ended. When the project is completed, they do a walk through with the customer to ensure you are satisfied with the finished project. I have always been thoroughly satisfied and have recommended Capital Construction to numerous people."
Before and After: Siding
Before and After: Siding
Before and After: Siding
590 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for Sky City Home Improvement, LLC
Sky City Home Improvement, LLC
4.4(
91
)
Sliding Door - Install - For Business

Serving Groton, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"Five stars are not enough to rate how good this company is. They are everything you want in a contractor. The quality of their work, and the timely manner in which they do the job is phenomenal . They leave the work space absolutely clean each night. The workers are very skilled and also very polite. I totally trust this company to do any job that I need done .Vasyl the owner is amazing. He is brilliant, accommodating and makes sure you are happy with the finished product. I have gotten many compliments on the quality of my deck they built around my pool. Go with this company. You will not regret it!!"
Waterbyry build new deck
Waterbyry build new deck
Waterbyry build new deck
Waterbyry build new deck
New deck (Mystic CT)2016

+297

Response time1 day
Response rate89%
42 neighbors recently requested a quote
Avatar for Long Home
Long Home
4.3(
46
)
New Windows - 3-5New Windows - 6 +

Serving Groton, CT and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"The workers were superb. They worked all day long in the most professional, efficient way imaginable, all harnessed in all the time. The roof was tight, extremely well constructed and ventillated. I had an experienced foreign visitor here who had never been much impressed by American workmanship before but she was incredibly enthusiastic about what she saw the Long Roofers doing. They did everything that had been promised, protected the facades of my house and the one next door, cleaned up so that you would never know they had been there and perhaps most telling of all were proud of their work. I could not have been more pleased and would recommend Long Roof to anyone. It was worth every penny."
Roof replacement
Roof replacement
Roof replacement
Roof replacement
Recommended by93%of homeowners
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Window Door Contractors FAQs, answered by experts

Window screens are available in several standard sizes. Common dimensions include 24 to 36 inches wide by 36 to 48 inches tall, as well as sizes like 18 by 14 inches and 20 by 20 inches. These often correspond to standard window sizes, such as 2 feet wide by 3 feet tall or 4 feet wide by 6 feet tall. Screens are also sold in replacement rolls to accommodate various dimensions. It is always best to measure your windows for accuracy before a repair or replacement. If your windows are a non-standard size, you will likely need to order custom screens, which can increase the cost. However, a screen does not necessarily have to fit the entire window, so you may be able to use a standard-size screen even if your window is slightly larger.

Window seals don’t last forever, so they’ll inevitably fail for one reason or another. One of the most common reasons is the expansion and contraction of the glass. When the glass gets warm from sunlight, it expands and adds pressure to the seal; at night, as the glass cools, it contracts. This process, day in and day out, can eventually cause the seal to fail. Other common sources of failure include the house settling over time, chemicals that damage the seal when repainting windows, and incorrect window installation.

Typically every 10-15 years or whenever they show signs of wear and tear.

No, but removing window screens will achieve a deeper clean. If you aren’t sure how to remove your screens, you can still clean them while in your window. You can follow the same cleaning steps, but you may not be able to get into corners or struggle to clean the entire screen if the window is up high.

Some local utilities or state programs offer rebates or tax incentives for energy-efficient upgrades, including solar screens. Make sure to check with your local energy provider or government agency to see if you qualify for any cost-saving programs. Federal tax credits may also be available for qualifying window and exterior home upgrades.

The Groton, CT homeowners’ guide to window and door contracting services

From average costs to expert advice, get all the answers you need to get your job done.