Roofing contractor
Northern California Roofing Co.
859 Cotting Ct Ste A, Vacaville, CA 95688
Listed under Vallejo, CA
- Google average
- 4.7
- Ratings counted
- 126
- One and two star
- 8 of 126(6.3%)
- California median
- 0.8%
The first three are Google’s own figures for Northern California Roofing Co., read on 24 September 2026; the share is of every rating Google has counted, not of the review texts on this page. The median is ours — the middle figure among the California roofers we list with enough ratings to compare.
Rating breakdown
| 5 | 116 | 92% | |
|---|---|---|---|
| 4 | 2 | 2% | |
| 3 | 0 | 0% | |
| 2 | 1 | 1% | |
| 1 | 7 | 6% |
Higher than most — the typical roofer in California sits at 0.8%. A higher share is a reason to read the critical reviews below, not a verdict.
The critical reviews
The one and two-star reviews, first. These are what a star average hides, and they are the reason this page exists.
All 7 of the one and two-star reviews we hold for Northern California Roofing Co., most recent first.
- 2 out of 5Emily2 years ago
I appreciate that they came out and took a look at my project (broken fascia/sloping roof overhang) but their assessment was puzzling and I was given quite the runaround. …
Google cut this review short. The full text is on their Google profile.
Reply from the business
Hi Emily, Sorry for the confusion our estimator may have caused. I just want to remind you that he did come out to the property within 48 hours and try to help you at no charge to you. He was hoping the city could put you in contact with an engineer/contractor that would be better suited for this project. In showing them pictures he felt they would better understand the situation and possibly be able to assist you. With that said we are sorry for the time we may have wasted we know your time is valuable and please give us a call if we can help you with any future roofing projects.
- 1 out of 5Rose Mary Forehand4 years ago
Tile roof installed 26 years ago with a 50 year warranty. Roof leaked over garage. The owner refused to ever call back. Sent an 'inspector' (John) out who only could talk about cleaning the valleys in the roof. The roof leaked at 26 …
Google cut this review short. The full text is on their Google profile.
Reply from the business
Hi Rosemary, we are sorry to hear about your experience. We do recall this instance and would like to reiterate that the 50 year warranty is through the manufacturer which covers the material. Northern California Roofing is an installer which is why we can only warranty our workmanship. Our estimator that we sent out to try and help in anyway possible was directed by you to not step foot on the roof, which makes it near impossible to identify the issue. Also, we were told by you that you have had a handyman come out throughout the years to clean out gutters and loose debris which could cause issues for the lightweight tile roof. We understand your frustrations but ultimately Northern California Roofing can not warranty the material, we can only warranty how it is installed. As always we can do our best to help you reach out to the manufacturer and see if your yearly maintenance will comply with their material warranty. It appears that our workmanship on the project is not the issue as it has been 26 years but again we would like to help in and way possible.
- 1 out of 5Daniel Dowell4 years ago
I have a leak in my roof and it's still under warranty and I've been ignored every day since the storm. I can understand if they are busy, but they should at least get back to me with an idea when they can do something about it
Reply from the business
We appreciate you sharing your feedback with us, We're disappointed to hear about your experience with us. We did try contacting you the following day. We were able to get a hold of you and inspect the leak within the same week, and our findings showed that the leak was not related to the work we completed. The leak was coming from the duct work attached to the HVAC unit. To provide you with a solution, we managed to give you a quick fix until an HVAC company could come out and properly fix the leak. We hope that our efforts in addressing your concerns have been of help. We do hope you give us an opportunity in the future to provide you with the quality service we are accustomed to sharing.
- 1 out of 5Tyler Deporto6 years ago
Never called me back
Reply from the business
Tyler, We did try finding you in our system and nothing came up. We do sincerely apologize that no one got back to you.
- 1 out of 5Patrick Hamilton7 years ago
I am the chief operations officer for a non-profit food bank. We've been waiting since October, 2018 (80+ days) for a roofing project. After repeated follow-up calls myself, emails, and the down payment remitted, we are still waiting to be …
Google cut this review short. The full text is on their Google profile.
Reply from the business
Patrick, We have searched for you in our system and there is no history of you ever doing work with us. We would love it if you gave us a call to talk about specifics of the project as we would like to get to the bottom of this. We are sorry to hear about your experience and hope that we can make good on this.
- 1 out of 5Danielle Austin9 years ago
If there was a way to give negative points I would. I have been trying to give this company business for 3 weeks, they came out and signed the contracts, and measured for solar and never came back, no communication AT ALL, I received no …
Google cut this review short. The full text is on their Google profile.
Reply from the business
We are sorry to hear about your experience. We have made adjustments to our management and staff to provide better service to our customers in recent years. We appreciate your time and consideration.
- 1 out of 5Space Ape9 years ago
DO NOT USE THIS COMPANY. They will stop returning calls, they do shoddy work, they do not uphold their contractual obligations, and will initiate a lien process rather than having a dialog around fixing these issues. This company is super shady and dishonest. Use anyone else, literally, anyone else. They installed our roof last fall. The crew that installed it did so in 1.5 days (full tear down and installation). We were surprised by the speed and a little alarmed. We were told in our sales pitch that the crew would consult with us and include us in the process. This crew didn't do that, they didn't even speak English, so attempting to engage them and be part of the process was fruitless. They just slapped up the roof and moved on. Immediately we noticed problems with the roof. They used the wrong size nails on our eves and destroyed them. The roof looked like garbage with tiles sticking up oddly in places. Items that were in the contract like new step shingles, new flashing on the eves, etc, were not completed. Also, though the contract stated that we would be charged $60/hr for dry rot repair we were charged $400/hr. And that is after we complained over the initial cost they tried to put in front of us which was almost twice that! And then it rained... 3 leaks! To Nor Cal's credit they came out and fixed those leaks but that's the only credit I will give them. And now I know the only reason they hopped to fixing those flaws was due to the liability they would have incurred had they not fixed them. They are motivated only through self preservation and not through anything resembling integrity. Though our sales person agreed that the roof was substandard, and though he told us they would fix these cosmetic issues, they never did. They stopped returning our calls. They fired our sales rep, the only ally we had. They never took steps needed to conclude our business, including sending out an inspector. We had a PACE loan, which expired. Then, after months of
Google cut this review short. The full text is on their Google profile.
Reply from the business
We are Northern California Roofing Co and not Nor Cal roofing. However, we are sorry to hear about your experience and we hope that we can help you with any future roofing needs.
What reviewers keep mentioning
Topics Google extracted from this business’s reviews, with how many mention each. These are words that appeared in reviews, which is not the same as a service the business sells.
- cost16
- no leaks12
- respectful staff11
- new roof9
- hardworking crew6
- dry rot repair5
- honest roofing company2
- gutter selection2
- honest estimates2
- clean job site2
Other reviews we hold
14 more of the 104 reviews we hold text for, most recent first. We do not hold every review Google has.
- 5 out of 5Lisa Reynoldsa week ago
Excellent customer service and full professionalism throughout the roof replacement. It was done quickly and it’s beautiful. Highly recommend.
Reply from the business
Thank you for the great review! We’re glad you’re happy with your new roof and your experience with our team. We truly appreciate your recommendation and thank you for choosing Northern California Roofing!
- 5 out of 5Carol T3 weeks ago
I first used Northern California Roofing company in 2011 for a new roof because they were diamond certified. They were great to work with and anyone with knowledge about roofing always comments on what a professional job they did. I reached …
Google cut this review short. The full text is on their Google profile.
Reply from the business
Thank you so much for your continued trust and support over the years! We’re glad we could take care of the damaged shingles and get your roof back in shape. Standing behind our workmanship and taking care of our customers is very important to us. We truly appreciate your recommendation!
- 5 out of 5RNG KING3 weeks ago
Excellent website with clear information and an easy-to-use layout. Their Commercial Roofing service looks professional, reliable, and well explained. I appreciate how simple it is to find details and contact information. Highly recommended for anyone needing quality commercial roofing solutions.
Reply from the business
Thank you for the great feedback! We’re glad you found our website informative and easy to navigate. We appreciate your recommendation and look forward to being a trusted resource for your commercial roofing needs!
- 5 out of 5Rosa Niño4 weeks ago
I had a great experience with MPA Construction Napa. Their team was professional, reliable, and easy to work with from start to finish. They paid close attention to detail, communicated clearly throughout the project, and delivered high-quality craftsmanship. It's clear they take pride in their work and genuinely care about customer satisfaction. I highly recommend MPA Construction Napa to anyone looking for a trustworthy and skilled contractor.
Reply from the business
Thank you so much for the great review! We’re glad to hear you had a positive experience with our team from start to finish. We truly appreciate your kind words about our communication, craftsmanship, and attention to detail. Thank you for trusting MPA Construction Napa and for the recommendation!
- 5 out of 5Linda Kencheliana month ago
Northern California Roofing Company installed our roof about 4 years ago. We recently had a bird poking failing in our roof corner. We thought he was building a nest. But he made a small hole and was storing acorns there!!! Filled a bucket half full!!
Reply from the business
Thank you for sharing this! We've seen birds do some surprising things over the years, but a roof full of acorns is definitely one of the more memorable ones! We're glad we could help, and we truly appreciate you trusting Northern California Roofing over the past four years. If you ever need anything in the future, we're always here to help.
- 5 out of 5Robert Thomasa month ago
The people at Northern California Roofing are absolutely outstanding. The accomplished my roof replacement on time and expertly done. Professional, efficient, and their communication was superior. Thanks, Great Job
Reply from the business
Thank you for your kind words! We're so glad you were happy with your roof replacement and that our team delivered the professional service, communication, and quality you expected. We truly appreciate your trust in Northern California Roofing and your recommendation!
- 5 out of 5Stephanie Fullertona month ago
Northern California Roofing did an outstanding job on my new roof. From start to finish, the entire process was professional, organized, and stress-free. The crew showed up on time, worked efficiently, and paid attention to every detail. The quality of the workmanship exceeded my expectations, and the crew kept the job site clean throughout the project. Communication was excellent, and any questions I had were answered promptly and professionally. A new roof is a major investment, and I am extremely pleased with the final result. I would highly recommend Northern California Roofing to anyone looking for a reliable, honest, and skilled roofing company. Thank you for a job well done!
Reply from the business
Thank you so much for your thoughtful review! We're thrilled to hear you had such a positive experience from start to finish. Our team takes great pride in delivering quality workmanship, clear communication, and a clean job site. We truly appreciate your recommendation and your trust in Northern California Roofing. Thank you for choosing us!
- 5 out of 5Blue Line Hoss2 months ago
I highly recommend Northern California Roofing, especially Andy Adams. My father-in-law had an ongoing roof leak, and after having three different roofing companies inspect the problem, they all told him he needed a complete new roof. Before making such a major investment, he contacted Northern California Roofing for another opinion. Andy came out, thoroughly inspected the roof, and quickly identified the real issue that the other companies had missed. Instead of needing a new roof, the problem was simply a vent near the top of the house that needed to be properly repaired and sealed. Andy returned to ensure the repair was completed correctly and conducted a detailed inspection to make sure all roof vents were properly sealed. Andy was professional, knowledgeable, honest, and focused on finding the actual solution rather than selling an unnecessary roof replacement. His expertise saved my father-in-law thousands of dollars and gave us peace of mind knowing the issue was fixed correctly. If you’re having any roofing issues, Northern California Roofing should be your first call. If you want an honest assessment and a proper fix, ask for Andy Adams.
Reply from the business
Thank you for taking the time to share your experience. We're proud of Andy's commitment to honest, solution-focused roofing, and we're thrilled he was able to identify the true source of the leak and save your father-in-law from an unnecessary roof replacement. We appreciate your trust in Northern California Roofing and your strong recommendation!
- 5 out of 5Ako Schultz2 months ago
They fixed our leaking roof. They responded quickly and fixed everything. They are a honest company and I strongly recommend them.
Reply from the business
Thank you for the kind review and recommendation! We’re glad we could respond quickly and get your leak taken care of. We truly appreciate your trust in Northern California Roofing.
- 5 out of 5Linda Hernandez2 months ago
John Galiotto with Northern California Roofing was amazing. He walked me through the process of getting a new roof. From picking the materials to warranty to financing. He made me feel at ease with the whole process. What really stood out to me was the communication throughout it all. The roof was installed in a matter of days, the hard working team was professional, friendly and cleaned up every day. I now have a safe beautiful roof. Thanks John and team!
Reply from the business
Thank you for the wonderful review! We're thrilled to hear that our team made the process easy and stress-free from start to finish. We take great pride in our communication, craftsmanship, and customer service, and we're glad our team delivered a roof you can feel confident in. Thank you for trusting Northern California Roofing with your home!
- 5 out of 5Andy DeSantis3 months ago
Northern California Roofing was a dream to work with. Andy and his team were attentive, kind, and thorough during the job. They went above and beyond with our roof, making sure every detail was checked. These guys are pros!
Reply from the business
Thanks for the kind words, Andy! We're happy to hear you found the team attentive and thorough with the work. We appreciate you taking time to leave a review!
- 5 out of 5ctau003 months ago
It was well over a decade ago, I needed to have two missing ridge caps & an end cap replaced on a multi-level home and went with Northern California Roofing to do the service. This was during the summer months and there was no problems with leaking. I don't remember the exact cost but it seemed considerably high for what was required. This time around things were different. All tiles were intact, it was rainy and I had a ceiling leak. John Galiotto was sent out to explain reasons a leak would occur and to discuss my options. He arrived with pictures of roof jobs similar to mine and thoroughly explained what it entailed. I could address the immediate problem area only, which would still leave me with 3 more identical potential leak incidents later down the road. In light of the previous experience, coupled with time & inflation, I was prepared to sell some vital organs to afford the fix. I asked for a ballpark figure do all four zones and it was significantly less than imagined. John was extremely cordial & comprehensive throughout keeping informed every step along the way. Thank you also his team of Tyler Fullerton & David Hernandez for their professionalism with invoicing and the pre-, present & post job photos which was entirely unexpected.
Reply from the business
Thank you for your thoughtful review and for trusting Northern California Roofing again. We're glad our team was able to provide a clear, professional experience and help you find the right solution for your home. We truly appreciate your business and kind words!
- 5 out of 5takemi oshiro3 months ago
Our service tech TYLER was a great help and gave us the information we needed…and took care of our issue in minutes! Note: we called Citadel customer service 3 different times and were given different information each time which confused us. More training may be in need there.
Google cut this review short. The full text is on their Google profile.
Reply from the business
Thank you for sharing this. We’re glad Tyler was able to step in, get you the right information, and resolve the issue quickly. We also appreciate the honest feedback about the earlier calls. We understand how frustrating conflicting information can be, and we’ll make sure your comments are shared with the appropriate team. Thanks again for taking the time to let us know.
- 5 out of 5Ram Krishnan4 months ago
Andy Adams and team did a great job of the roof installation. While they took a while to get to my project because of their pipeline, we were willing to wait because we found Andy to be very up-front, knowledgeable and easy to deal with. Andy was also very helpful in recommending adjacent service providers (painting, sheetrock, electrical). Would highly recommend Norcal Roofing.
Reply from the business
We appreciate you taking the time to share this. Thanks for your patience on the schedule, we’re glad it was worth the wait. It’s great to hear the communication and recommendations helped make the overall project easier, not just the roofing itself. We’re glad you’re happy with the final result and truly appreciate the recommendation.
The latest post from this business
Posted by Northern California Roofing Co. to their own Google profile 2 months ago. Their words, not ours.
Composition reroof in Napa with GAF Shingles5 days ago
What Northern California Roofing Co. says about itself
Taken from the business’s own website. We have not checked any of it. These are quotes, not credentials — a roofer writing “licensed and insured” on their homepage is not evidence that they are.
States a founding year
“…| GAF Master Elite® Roofing Contractor Since…”
Other roofers in Vallejo
Ranked by how many ratings Google has counted.
| Roofing contractor | Google average | Ratings counted | One and two star | Contact |
|---|---|---|---|---|
| Roof Doctors Solano Countyknowledgeable staff, inspection, courteous staff4.788 ratings5.7% one and two star(707) 674-5775 | 4.7 | 88 | 5.7%5 of 88 | (707) 674-5775 |
| Roofmastersthorough inspection, outstanding job, skylight replacement4.750 ratings8.0% one and two star(707) 447-7663 | 4.7 | 50 | 8.0%4 of 50 | (707) 447-7663 |
| Jorge Lopez Roofing Incroof replacement, attention to detail, impeccable work4.838 ratings5.3% one and two star(415) 823-9013 | 4.8 | 38 | 5.3%2 of 38 | (415) 823-9013 |
| IronStormline Roofing Groupinspection, home, leak4.828 ratings0% one and two star(661) 590-8200 | 4.8 | 28 | 0%0 of 28 | (661) 590-8200 |
| Triple T Rejuvenationroof work, quality work, timeliness5.027 ratings0% one and two star(707) 914-1959 | 5.0 | 27 | 0%0 of 27 | (707) 914-1959 |
| California Premier Roofingroof replacement, gutter, leak5.020 ratings0% one and two star(707) 209-9390 | 5.0 | 20 | 0%0 of 20 | (707) 209-9390 |
Where this page comes from
Every figure above is Google’s, captured on 24 September 2026. The star average and the 126 ratings behind it are counted by Google across all of its reviews. The review text on this page is a sample — we hold 125, of which 104 have any text — and it is not everything Google shows.
Roof Warden does not verify licenses, bonds, insurance or workers’ compensation cover, and nothing on this page should be read as though we had. Confirm those directly with the contractor and with your state or provincial licensing body before you hire anyone.