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Denison, G A & Sons

Acoustic Ceiling Tiles - Install, Exterior Surfaces - Powerwashing, Exterior Surfaces - Sandblasting,

About us

G.A. Denison & Sons, Inc was established in 1969. We provide New London, Connecticut, and surrounding areas with a variety of superior home improvement and construction services. From roofing services to custom carpentry, we have you covered. When you call G.A. Denison & Sons, Inc, you can rest assured that you will receive only the best quality services. Our owner is on every job, no matter how big or small, and all of our work is guaranteed in writing! We carry only the best brands, including GAF and CertainTeed and treat every job with equal care and importance. We are also fully licensed and insured for your satisfaction and protection. We are proud to be a Better Business Bureau-accredited business. Contact us today to learn more about our services, or to schedule a roofing or siding service!

Services we offer

Roofing Contractors, Siding Contractors

Reviews
4.947 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
89%
4
9%
3
0%
2
2%
1
0%
Showing 1-25 of 47 reviews
William S.
Aug 2019
5.0
Yes, I recommend this pro
$6,000
They came with full crew did all the work in one day. They did a fabulous job of cleaning up at the end of the day. Very satisfied with the work they did.

Rose A.
Feb 2019
5.0
Yes, I recommend this pro
They have been excellent and they stand behind their work. They are very responsive to phone calls in a timely manner. I would highly recommend them as well.

Lily R.
Aug 2017
5.0
Yes, I recommend this pro
$8,000
Mr Dennison went to my mother's house and provided a quote in 24 hrs. He talked to me on the phone, and her in person, about what was involved and gave her a good sense of comfort and confidence. His quote was competitive so she hired him. He brought her shingle samples and they scheduled the work right away. As promised, he was done with the entire project in 2 days. My mother said his guys were "always moving" very hardworking and focussed. Mr Dennison was kind and clear working with her. HIGHLY recommend!

Jim S.
Jun 2017
5.0
Yes, I recommend this pro
I contacted Denison & Sons based on Angie's List recommendation. Mr. Denison prepared a detailed estimate of the work to be done including a starting and ending date. Two excellent craftsman Richie and John were at my home everyday that weather permitted. They conducted themselves as professionals at all times and were open to answering by inquiries. Each day they cleaned up after themselves. The job was completed within the projected time. It's been about a month since they completed the job and so far the quality of the workmanship stands-up to my expectations.

Terri P.
May 2017
5.0
Yes, I recommend this pro
It was a small job, but they responded right away, showed up on time and fixed the roof cap with no hassles.

Elaine V.
Mar 2017
5.0
Yes, I recommend this pro
Excellent. The job was done in 1 Day. Clean up was complete. This was my 2nd Roof job done by this company. I will use them again when needed. They are Top Rated+ for me.

Elaine V.
Jan 2017
5.0
Yes, I recommend this pro
Excellent. The men were polite & professional. They cleaned up everything when they were done. Roof & Sky Lights look Wonderful.

Anne G.
Jan 2017
5.0
Yes, I recommend this pro
$500
A since it worked. (Price) D just cause we dont really know. The price was steep but then again, I wouldn't want to go out on a roof in December either, so. (Workers) They were just fine.

David J.
Oct 2016
5.0
Yes, I recommend this pro
Couldn't have been better. Responsive, professional, trustworthy.

Toni E.
Sep 2016
2.0
$12,000

I have not had a very good experience with them so I would not recommend them. It was their timing and the cost. I just would not use them again. I have not heard very good reports about them from other people. The cost of the roof was $12,000 and he actually did not finish the whole roof until the next year. Part of it was a flat roof although they did come after quite a few calls they did come and fix a couple of leaks in the part of the roof they did not finish. There were two roofs: there was a flat roof for the kitchen and a flat roof for the living room. They did the main roof and I had to wait quite a while for them to come back. I paid for the whole thing to be done and the whole things was not done. That is why I think it took so long. The storm doors cost way too much money. They were overly expensive. I was just totally disappointed with the whole thing. For the roof they were there on time.


June W.
Jul 2016
5.0
Yes, I recommend this pro
unknown

Natalie K.
Jul 2016
5.0
Yes, I recommend this pro
$7,400
unknown

Patrick N.
Mar 2016
5.0
Yes, I recommend this pro
$5,000
I'm very happy with the work.

Harvey B.
Feb 2016
4.0
Yes, I recommend this pro
unknown

Barbara D.
Jan 2016
5.0
Yes, I recommend this pro
$8,500
Very prompt estimate. Work started and completed on time. Total project took less than 10 days. Crew was very professional and efficient.

John W.
Nov 2015
5.0
Yes, I recommend this pro
$11,200
The team showed up on schedule and completed the work over a two day period. They were here by 7:30am each day and worked until sundown - about 4:30. They left the grounds cleaner than they found it on both days and left nothing behind. They did an awesome job. The team was very respectful of me and my family members.

Margot P.
Nov 2015
5.0
Yes, I recommend this pro
$16,800
Took about four weeks to get a confirmation date for the job to start, but once the work started it was done in under 3 days.  I have a 3000 sq ft roof.  The crew was polite and professional.  Denison has his own craftsmen and his trucks come loaded with everything they may need, there is no run to Home Depot for anything last minute.  There is no dumpster in your driveway for 3 weeks, what they take off they remove the same day in their trucks.  Cleanup was done well.. I did find nails on the lawn after but considering the job and the amount of nails they removed I wasn't concerned.  Maybe 30 nails total I found.  George came over at the end of the project to walk the house and make sure I was satisfied.  I would highly recommend this company.

Michael A.
Oct 2015
5.0
Yes, I recommend this pro
$30,000

We could not be more satisfied with Dennison's work.   The workers were professional, cleaned up after themselves daily and actively consulted with us on many issues.   They made several suggestions that were implemented and improved the look of the house. 


All communications were timely, including letting us know when they had to attend to an emergency job and exactly when they would be back at work. 


Although quite pricey, we feel we got our money's worth for the job.


We have used Dennison before for a complete reroof and that job also went well.



Chris G.
Oct 2015
5.0
Yes, I recommend this pro
Excellent. Mr. Denison himself showed up to do the initial inspection. I expected the repair would cost  $200-$300 and take an hour or so. Mr. Denison looked at it, asked if I was in the military, and said don't worry about I'll take care of it. I was shocked. I occasionally get military discounts on things which I greatly appreciate, but this was above and beyond. I didn't know what to say other than thank you. We have had heavy rain twice since the repair with no issues. Thank you for your generous gesture, it won't be forgotten.

Alex K.
Mar 2015
5.0
Yes, I recommend this pro
$6,200
Rubber roof work completed in one morning, all shingle and siding work completed in one day. Everyone very professional and efficient, cleanup completed and area left as if work had never happened. Very satisfied.

William H.
Dec 2014
5.0
Yes, I recommend this pro
$1,600
they were excellent

Kenneth L.
Sep 2014
4.0
Yes, I recommend this pro
$6,800
We are very satisfied with the roof. The crew was efficient. They got started late due to traffic from Danbury. It's a long way to travel for a local company.
Our main complaint was punctuality: we wanted to talk to the estimator face to face but he showed up before the scheduled appointment. I lost 1-1/2 hours of work because he had "dropped by because he was in the neighborhood".  Then I got a call on Thursday morning asking if it was alright to do my roof that day. I wanted a scheduled day for the job because I wanted to take care of some things in the yard before the job started.  The cleanup was okay. There is still some small stuff in the yard: they did run a magnet to collect all the nails.
We would use Denison again for other jobs - provided we get better adherence to appointments. Time is money: both his and mine.

Stephen M.
Sep 2014
5.0
Yes, I recommend this pro
$13,000
Had a really good experience with G A Dennison & Sons.
They were very organized.  Started a bit later than originally expected, but we had rain so understandable.
Once the job was scheduled, they were there when they said they would be.  All debris was clean up and removed daily.  They did not drop any dumpsters on the site.  They met all expectations as far as the quality of work, but where this contractor shines the brightest is around communication.
They were exemplary at communicating which is what really makes them shine in my opinion.  I've sort of gotten used to contractors ignoring my calls, not showing up when they say they will without calling, etc.  G A Dennison  & Sons broke the mold when it comes to this kind of unprofessional behavior.  One time I called to ask a question.  George wasn't in the office so I left  message, and I got a call back from him within a minute of hanging up.  I was pleasantly stunned.  Many CT contractors could learn a valuable lesson from this company.

Carolyn K.
Aug 2014
5.0
Yes, I recommend this pro
$2,800
Ok. No problems. Took 8 hrs to complete.

Franklin D.
Jul 2014
5.0
Yes, I recommend this pro
$7,960
The job was completely done on a Saturday, including all trash removal.By Saturday ewvening, you couldn''t tell they had been there - except for the new roof in place.  Great job.
Showing 1-25 of 47

Licensing

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

All skilled traders and home improvement contractors operating in the State of Connecticut are required to be licensed or registered by the State Department of Consumer Protection. License or registration identification is required to be on all advertising, business cards, signage, and contracts. You can check to see if a contractor or tradesperson is licensed or registered by going to: State of Connecticut licensing

FAQ

Denison, G A & Sons is currently rated 4.9 overall out of 5.

No, Denison, G A & Sons does not offer free project estimates.

No, Denison, G A & Sons does not offer eco-friendly accreditations.

No, Denison, G A & Sons does not offer a senior discount.

No, Denison, G A & Sons does not offer emergency services.

No, Denison, G A & Sons does not offer warranties.