My neighbor referred me to James and United Roofing. From the start, James was amazing. We had a leak over our bay window. Long story short, James came out the next day, took a look, noticed a chimney cap was blown off as well and then gave me a proposal the next day with three options. I looked it over thoroughly, asked James a few questions and details. We scheduled the work for the following week. He was communicative throughout and made the day of work super easy and efficient. His team including Javier (who is also amazing) were gracious and kind. It was a super stressful time to deal with a leak and after not ever dealing with a roofer, James and his team made it a great experience. I hope you don't need a roofer, but if you do, definitely go with United Roofing. I've already referred his team to a couple of friends who need help on their roofs. read more

United Roofing replaced my roof back in March 2025. I was forced to replaced the roof in a tight time frame by my new home owner insurance company, otherwise they will not write the new policy for my house. I have contacted 3 roofers including United Roofing, James. He is the first one reply to me on the same day. The other 2, one get back to me 3 days later and one 4 days later. James gave me the estimate within 2 days while the other 2, one, a week and a half later and the other one never responded anymore. James provided the best price by far and was able to squeeze in the time to replace the roof within the insurance company timeline. The other was very expensive and cannot start until a week after the insurance timeline. The contract from United Roofing was clear and well written. James was very responsive and very polite when we were talking about the details in the contract. I like working with him, it;s is very important to me to work with contractor that likes to work with their customer. When they started the work, I was up on the roof seeing how the install the new roof, especially installing the flashing part. Very well trained and everyone has good knowledge and experience on what they are doing. Of curse, i asked them questions and provided the correct answers. I was one an electrician and had experience dealing with different contractors, so I know who is BSing me and who really know their stuffs. After they finished their excellent job on time, I had referred 3 more customers to James. Including my friend who referred James to me. I know that James had done 5 roofs, including mine, there is no problem so far and his price is the most reasonable. I highly recommended James and his crews. read more

United Roofing - Roofing Near Me - Millbrae, California

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United Roofing replaced my roof back in June 2024. We are so happy to have hired James Pak and his lead man, Javier, to replace our 30 yr old flat roof and a connected secondary lightwell roof. We chose United Roofing because 1.) James Pak helped us diagnose the root cause of the source of a leak inside the house. 2.) We compared 3 estimates and their px fell in the middle 3.) now that the roofing work is done ( total of 3 days ) and we have seen their workmanship and professionalism first hand, we got what we paid for-- a roof with top notch materials to last for decades. As a case in point, Javier and crew ripped our main and lightwell roof down to the wood frame and when they noticed that the rain drainage pipe was aged and not properly functioning, they recommended having the issue fixed once and for all, leaving no chance of a problem down the road. They are thorough and conscientious in their approach to work. We highly recommend James Pak and Javier of United Roofing. read more

United Roofing replaced my flat and shingle roof sections and did an excellent, thorough and complete job, including adding a large skylight. James and his crew were hardworking and didn't take any shortcuts when it came to ensure their new roof and various flashings would last a very long time! It was a pleasure working with United Roofing. read more

United Roofing did a partial replacement of our roof in March 2025. I received five proposals but I went with James and his crew, even though he did not have the lowest bid. It was because I found him responsive to all my questions and gave me clear explanations. I also liked the fact that his foreman and some of his crew members have been with him for 20+ years. To me, this was another plus to add to his score when I evaluating all the companies that gave me a proposal. I also found it easy to deal with James ; another reason I decided to hire him even though there weren't that many reviews on Yelp about them at that time. I was not dissappointed in my decision to hire them. I think they did a good job on my roof. He also saved me some money by recommending that I use the existing rotating vents since they were still in good condition and just need to be repainted. I recommended United Roofing a friend and he too was happy with their work. Give James a call and find out for yourself or better yet, hire him for your roofing needs. read more

James and United Roofing are amazing! We had an old office building in SF and the roof would leak every rainy season. James and his team had competitive pricing and great communication. They were able to get the job done quickly and the roof looks new! Highly recommend. read more

United Roofing - New roof - Roofing Near Me - Millbrae, California

We requested reroofing on the house and the garage and replacement of the gutters. James gave us the second lowest bid. He and his crew were very professional and hard working. We are very pleased with the roof. Thanks James! read more

United Roofing - Roofing Near Me - Millbrae, California

United Roofing just replaced my roof and gutters and did an excellent job. The crew was very professional and efficient. I was impressed on how hard this crew works even when the temperature outside and at the roof was in the mid 90's. Overall I was very satisfied with the quality of their work. I would recommend them. read more

Hired them to do my roof. When they got to it they were fast and so far no noticeable leaks. Got several estimates. Got quite a few in 2022 and several more at end of 23'. His was second best price but much lower than most. All in all, when it was all over I am very happy with the new roof. Also wanted gutter guards and they got them on toot sweet as well. So for now I will give 5 stars cause I feel generous and am very happy with new roof thus far. Oh ya my homeowners insurance went down $300 because of it as well. So smiles all around. read more

We called United Roofing to get an estimate on a redecking of our (modified bitumen) roof per a request by a solar panel supplier. James came, inspected our roof, and returned with a refreshingly candid conclusion: our current roof was just fine and did not need to be replaced at this time. We really appreciated his honesty, since we'd like to forgo an unnecessary roof renovation and just bank the money for when we really need to replace it. United Roofing will be the first company we reach out to when it's time to replace our roof! read more

I had a wonderful experience with United Roofing! My parents' home in SF was in need of a long overdue roof replacement. I had sent out multiple inquiries to different roofing companies to get assessments and bids. Out of all of the companies, James was the most responsive and flexible. My father had built a covering over the central patio that he plans on replacing eventually. All of the other roofers required discarding it to do the work, but James was the only one who said he would remove it, have the roof done, then replace it. The warranties and guarantees were comparable across the board. Communications with James was prompt, courteous, and professional. He was the first one to respond to my inquiry (same day). He was able to schedule to visit the property quickly. He provided a detailed estimate of the work the same day. He was able to get the work scheduled quickly as well before the rains hit this season. Although I live elsewhere, facilitating the project remotely was so easy with James. Every point of communication via text, email, or phone was clear, prompt, and polite. Having excellent communication is so important and James was so responsive. The work itself was done in 3 days, the roofers cleaned up after each day, and the before and after pics are like night and day. The entire process was seamless from start to finish and my parents are so happy with the results. The only regret I have is not having found James earlier when we had to have our own roof replaced earlier this year. If anyone needs a roofer, I'll definitely refer them to United Roofing! read more

WE hired UNITED ROOFING to replace our roof, in the Sunset District of San Francisco, after interviewing more than 8 Bay Area Roofers and Insulation specialists. They did an outstanding job, in just 3 days at a competitive price. WE ASKED for a new roof that will add to the INSULATION of the house: - they were the ONLY one proposing adding a layer of 1" fiberglass base sheet insulation material before the bitumen. WE ASKED to make the roof WHITE, for better solar reflection: they proposed using a bitumen membrane "granulated surface with your choice of color" ! WE ASKED that a vent be moved 2 feet to the South, to clear more roof space for the future installation of SOLAR panels. NO PROBLEM, they said! WE ASKED that the pitch roof on the front of the house and the porch be covered with red tiles: Yes, we can do it, they said. We will use "S" tiles, they are the best... They also replaced ALL vents and pipe flashing, AND the downspouts in the front and back of the unit. James and Javier and his team of 4 were friendly, professionals, and left a perfectly clean place. James added that he will come back after the SOLAR panel installation, for an extra inspection, so we keep our 20-year manufacturer's warranty and 10 years leakage's warranty. WE RECOMMEND UNITED ROOFING to everyone who want to fix a roof leak AND make their home more energy efficient. P & E. read more

Reached out to James at United Roofing to replace our roof on the coast. He was extremely professional and prompt during the quoting process. The crew showed up on time everyday and knocked the project out in under a week. They were extreme tidy and cleaned up the workspace everyday before leaving. They even went above and beyond with repairs and add-ons without price gouging. United replaced all our vent caps, chimney cap, spark arrestor, and installed seamless gutters with down spouts. We were able to get a better quality roof with a longer warranty than the competition at a lower price. Couldn't be happier with the outcome! read more

After purchasing our new home, the first thing we needed to do was replace the roof (pitch, flat and garage). We had about 4 different contractors come by to provide estimates. We were looking for the right price, the right team and for someone to start work ASAP, and James was the winner. The flat roof of our house was in bad shape, and there was going to be a severe storm coming. But because of the timing, we weren't going to be able to start and finish the job before the storm. Even though he was extremely busy working on other jobs, he came by before the storm to make sure there wasn't going to be any leaks. Even just checking up on the roof before the storm gave us so much comfort. The storm came and went, and no leaks! Afterwards, James was so accommodating in getting our job started and finished shortly after. The finished product is fantastic (including the new gutters), and now we have so much peace of mind under a new and beautiful roof. Working and communicating with James has been such a delight, and we consider ourselves being so lucky in finding James and team. This experience has definitely made us feel so much better and safer amidst all the other stress and curve balls that have been thrown at us as new homebuyers! Thank you United Roofing! read more

My husband and I bought our first house recently and knew the roof was nearing the end of its lifetime, but thought we still had a few years left in it before needing to replace it... then we got some rain and realized we had some bad leaks that needed attention ASAP. I met with a few different roofing companies, and chose James and his company. He was always prompt in his replies when I reached out with any questions, very professional and honest and able to talk about the roof issues in a way that was easy to understand. He was able to fit me in quickly, and his team finished up the whole roof in 3 days. They cleaned up the area really well at the end of each day, I think we only ever found a single stray nail after they were done (I've talked to others who had their roof redone and were finding stray nails around their house for weeks afterwards). I definitely recommend James, he and his workers were very pleasant to work with and did a great job. We're very happy with our new roof! read more

My fiancé contacted James for our new home in San Mateo. James was so prompt in responding and in giving us an estimate back. This was a HUGE plus for us as we've met with many contractors for bids who would take forever in responding or sending an estimate. We found out that our flat roof was in its dying days and that we needed to switch it out ASAP since the previous owners never took care of the roof. Unfortunately we happened to find this news out just a few days before a week of rain and the huge storm that was coming in that weekend. We didn't even hire James yet and he was so concerned for our roof he even went to checkin on it. He helped lower our anxiety by trying his best to get us scheduled in after the rain and right before another storm. We weren't there when he performed the actual work but when we got back from our weekend trip, we had a beautiful black roof with all new vents and everything! We chatted with some neighbors and they said James and his crew came by with a team or 8 or so and finished the work in amazing time (2 days)! Since his crew came and did work on our home, we've received many positive comments about roof and there's been a few rainy days since and no leaks! Would 100% recommend James to our friends and family (in fact we already did)! read more

Very friendly & very efficient staff ! They finished replacing my roof in 3-4 days & able to passed 1time home roof City inspection. They charged u at a reasonable rate . I highly recommend their company to all my friends. read more

I had my in tire roof replaced. The owner and the foreman were very professional from the beginning of the transaction, during the entire process and until they finished the job. I'm very pleased with their workers and their work. Price is very reasonable, the owner of the company is very considerate to the financial situation of the customer. I can strongly recommend this company if you need work on your roof. read more

James gave us a reasonable quote for the reroofing we asked for. He did not try & upsell us. The roof looks great! He did the gutters & skylights as well. An honest company! read more

James came out to inspect our roof and provide his estimate whether we needed to replace, and what issues he saw. He was very pleasant and knowledgeable and upon seeing the roof he determined we didn't need to replace or do any work. We appreciated his honesty and that he was not trying to sell us or pressure us to do any unnecessary work. His quote for replacing our roof (it'll be different for yours depending on the sq ft area), was $12K which was in line with other contractors we talked to. He did point out some minor bubbles on our roof from the previous installation that was caused by heating the material too high. It was great to get this insight and to learn that overall, our roof is doing fine and can go on for a few more years. I would definitely recommend talking with James for your roof. He seems very easy to work with and really knows what he is doing. read more

James and his team did a great job on our flat roof. Replaced an old tar and gravel with a Modified Bitumen. Pricing was not the lowest quote but worth it for the quality! read more

Our very old flat roof was leaking and was badly in need of a replacement. James and Javier from United Roofing came to our rescue and did a fantastic job. James has been in the business for decades and is very knowledgeable, honest and more importantly does not cut corners. He and his team completed the job on time and at a very competitive price. I would recommend United roofing without any hesitation. read more

United Roofing was recommended to me by a contractor I respect. The company has been in business since 1989 serving the whole SF Bay Area, State License #577950, which is demonstrated by the way they operate. My job was in San Francisco. From permit application to final inspection was timely. The construction manager Javier was skilled, efficient and communicated clearly to answer any questions. I felt he had a real desire to please. He explained how I could prepare my attic for the most protection. The crew left grounds very clean and very carful to protect my apple and lemon tree which I appreciated very much, as stated in the contract. My gardener remarked that the site was cleaner than she had seen from other roofing jobs where she gardens. The crew arrived on time and worked continuous to complete the job quickly, I asked for copper flashing which they were wiling l to add as a change order to go with my copper gutters. My skylights were carefully flashed. I was proud of the look when the job was complete. I highly recommend United Roofing ( www.unitedroofingsf.com ) for their experience, good contract management, and fine and friendly crew. read more

James was very prompt and very helpful with my roofing concerns. He went up on the roof and took pictures to show me the current condition. He gave me an honest assessment and a couple of options for addressing the issues. He was very easygoing and I felt very comfortable that I could trust his opinion. read more

James, from United Roofing, gave me the best estimate for my flat roof here in San Francisco and he thoroughly explained what was needed. What was cool is that he would be using non traditonal Tar-and-Gravel which I have had on previous roofing work. I decided to go with United Roofing. James and his crew replaced my roof in May when we ain't had much rain in quite awhile. The work was done in a timely matter and although I did look over everything (but what the H do I know about roofing...lol) and everything seem fine, I was still uncertain as to possible leakage if/when we get some heavy rain. Well, the long awaited and needed heavy rain came last week and no leaks anywhere!! Whew!! So unless there are any problems in the future, I am very happy with the roof work performed by James and his crew. I highly recommend United Roofing. read more

They didn't do the work, just came out for estimates. First he missed our original appointment, and later when he came he was very rude and unhelpful to my husband, and we had to ask him to leave shortly. read more

I chose United Roofing over the other roofing services with a higher amount of reviews on Yelp because the owner, James, was very responsive when I was seeking quotes. When he came by to give me his assessment of the roof, he was far more insightful and observant of the roof's current condition and what flaws he saw on the previous job that could be fixed with solutions that he proposed. The entire process with James was very low pressure and a pleasure. If you're looking for a new roof, I'd greatly recommend adding United Roofing to your list of candidates. read more

Had a pleasant and super friendly interaction with James when I requested for a quote. I appreciated the fact that we went over the details thoroughly to ensure we were on the same page, my questions were answered and he also received the info he needed. Great service! Can't wait to start with our roofing project with them! read more

We were in bad need of a new roof and gutters. James came and gave us an estimate and we immediately felt at ease with him. He explained everything thoroughly and showed us the problems area and how he and his team would resolve it. We felt that he was honest and fair. His bid was in the middle of the 4 bids we received and we are glad that we went with United Roofing. His crew was very courteous, hard working and very willing to answer any questions that we had. They got the job done in about 3 days and cleaned up after themselves each day. I would definitely recommend James and his team for any roofing job. They did a great job on ours and we are so happy that we picked them to replace our roof and gutters. read more

If a quote was sent after inspecting the roof and giving a very thorough assessment of the problems, I might have given them the business. After numerous attempts to contact Mr. Pak, I was able to get one return call stating a quote would be sent. It never was. I gave up after two weeks of leaving messages and texts. I did not want to beg for a quote. read more

James came (1/2 hour late) and I showed him the problem with my leaking skylight that was NOT a major problem, just dripping down the inside wall slightly, which I thought may just be in need of new caulking to seal it. I explained that we had a leak 2 floors down and were not sure if these were connected in any way. He said it was too "slippery" for him to go up on the roof (has been raining all day) and that "he wouldn't risk his life" going up there, which I can understand, if it's not a good time to investigate, FINE, but let's plan to do that when it is DRY...He refused to even try to re-schedule or say that there was someone else in his so-called "company" to come back and look at it. Just a big "so sorry" and left. What a waste of time, and problem still not solved. read more

Spoke with James. He promised to visit the property as I provided him details of the property and the address. He never showed, never called. I followed up with him and he made up excuses that his truck broke down and that he went to the site and it's commercial. Would recommend going elsewhere for this. read more

The project was completed on time and all my satisfactions were met. The owner was very courtesy and addressed all my concerns throughout the entire process. When I reached out, the owner always answered my call even after the work was completed. During installation, the whole crew kept my property very clean and safe. I would not hesitate to refer them to my friends and family for roof work. read more

I have worked with James for my home in San Bruno. We bought an Eichler style home which is a flat roof. Unfortunately, if the roof is not properly constructed, you run the risk of standing water. We had a lot of leaks throughout the home. The skylights were leaking and there were other leaks in the main living room which was running my hardwood floors. We didn't have the money to do a full roof repair. James and his crew came out to do an estimate. He did a roof leak test and was able to identify where the roof was leaking. He then patched up all the leaks in a cost effective manner, knowing that we will be needing a new roof. We will definitely need a new roof at some point, and will need to save up for one. But for now, I feel good about the work that was done by James and will reach out once we are ready for the new roof. read more

Last year's storm brought unwanted leaks, so I started to search for quality roofers. After getting a few quotes, I decided to go with James. His expertise and detailed explanation of the process made me feel confident that he would do a good job. His team was efficient and always left the yard clean of debris. Love the way it turned out, highly recommend. read more

James has over 30 years of experience and is very honest. I was worry about the roof, James come quickly and after inspection, he told me not to worry since the condition of the roof is good, while the other roofer tried to persuade me to replace the roof. He is very trustworthy because he has no intention to take advantage of the customer. read more

Great service & great communication, roof done before the holidays! Will definitely recommend!

James is very professional honest and experienced in roofing. I interviewed three roofing companies and so glad I went with James. The quote/price is reasonable, the work is of high quality, friendly service and exceeded my expectations. Thank you so much James. read more

James is very responsive with inquiries. He quoted a very reasonable price for my roof project and completed the job in 2 days. That was including removed and reinstalled 20 solar panels for the roof replacement. The job was done professionally with a skilled team. I highly recommend United Roofing. read more

I didn't use their service but I would like to say James gave the most detail of proposal and very prompt on communication. Our roof is old, so very likely we will use their service for roof replacement in near future. read more