This is the 2nd property where we used A-! Roofing & Maintenance Co. for the roof & gutters replaced. Easy to work with, accommodating, reliable, good quality workmanship, efficient and affordable. read more

It is my pleasure to recommend the services of A-1 Roofing Company. From the start of the project to its completion, I was impressed with their integrity, and communication. They completed my roof replacement on time, and left the job site spotless. I have no reservations giving them my highest recommendation. read more

San Francisco A1 Roofing & Maintenance was excellent from start to finish. They showed up promptly, worked efficiently, and handled everything with confidence and professionalism. You can tell they really know what they're doing--40+ years of experience is something you can trust, and it definitely shows in their work quality. If you're looking for a dependable roofing company in San Francisco, I highly recommend A1 Roofing & Maintenance. Fast, reliable, and truly experienced. read more

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I'd say they do the best they can or as fast as they can. But the problem is after the job was done! My roof leaked right after the repair, they did come back 4 times to try to fix the leaks. the roof still has a leak. then they blamed my house was old, needed a little more work, ok. told me they sent me the proposal and after 2 months, I received nothing. They don't answer my calls. I guess the warranty was done! read more

Service was prompt and very professional. Everything done beautifully. Would recommend them to anyone.

Awesome experience with A1. They replaced my flat roof in Spring 2023. We had torrential rains earlier that season, and the bids we were getting were on average $10k higher than what we were expecting. Some much higher. Half the city was reroofing that year, so it was just tough. More annoying was having to spend an hour talking to a sales rep with some of the bigger companies. They often couldn't answer detailed questions about the process. With A1, we spoke to John Park, who did the estimate and all the follow-up communications. He's so nice and professional. He didn't waste our time with a long sales pitch. He had enough detailed knowledge of the process to expertly answer all our questions. Our roof was done cheaply before, and we spent years patching it, so it was important to us to know the details. A1's bid was very affordable but it didn't skip anything. Insurance, warranty, technical installation details, everything was there. The installation was great. After tear-off, they inspected and repaired any damage to the 100-year-old decking underneath (previous roofers skipped that, and there were broken deck boards). This was a standard bitumen flat roof, and they installed the membrane and then a bitumen cap sheet. Flashing is installed all around the edges. The chimney cap and all other caps were replaced. They replaced the scupper and the downspout, which had rusted out. They flashed around all our vinyl siding. We have a low parapet wall with stucco and about 2ft of flat roof past that. The proper way to deal with that is to cut away the stucco up about 6", install flashing, and re-stucco. Stucco absorbs water, and it drains out the bottom, like a sponge. Flashing underneath lets it drain onto the roof membrane, not under it. Roofers know this, and it's required by the manufacturer's warranty, but it adds a lot of time. You can save half a day by just laying down the membrane and sealing where it meets the stucco. That's how our old roof was. A1 did it the right way :) They even matched our house color pretty well with the new stucco, so we didn't have to bring out a painter. Bottom line, great install at an affordable price, and we're still dry two years later! read more

This is the second time I have use A1 Roofing. The first time I use their services was in July 2010 (I had a new roof installed by another roofer in January 2000). In April 2011, strong winds tore off the cap on my fireplace flue, A1 Roofing replaced the cap without charge. August 2024: my insurance company require that my roof be re-coated before my property insurance would be renew. My 2010 roof is still in great shape--only needed to be clean and have minor patches, per A1 and other contractors However, the insurance company required re-coating. John Park seek to find the most economical re-coating system to meet the insurance company's requirement. I found the proposal to be fair and good value. The coating system requires complete dryness before the next coat is applied. My roofing job was completed in three days: Friday, Monday & Wednesday. My insurance company approved of the re-coating and my insurance has been renewed. Attached are pictures before and after read more

A1 Roofing & Maintenance - completed re-coating as of August 2024 - Roofing Near Me - San Francisco, California

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My two siblings referred me to A1 Roofing and I am very happy with A-1 service. John and his co-worker wore their face masks when they entered my home to provide me an estimate for my roof. A-1 was able to replace my roof and skylights in 2 and half days. The crew started their work promptly at 7:30 AM. John kept me inform on the project. My family and I are very happy with A-1 Roofing and Maintenance Company. Lillian B. read more

I found this business through a recommendation from a coworker's friend's neighbor who is a sort of big deal contractor, at least within the building community he is, who said to mention his name with this company. Anyway my coworker had her roof fixed by A-1 a few years ago and she couldn't say enough good things about them and they were very affordable. So the day finally came where I would have to have my mom's flat reroofed because it was leaking like a thing that leaks very much. The roof was over 15 years old we think. I called A-1 first for an estimate and they came out to look at the roof a day later. The guy (I forgot his name) was really prompt and very nice. He actually was early and waited in his truck until the appointed time. After checking everything out (the light wells, the back porch and the front pitched roof) the news was that it was a mess. Cracked, old, crumbling and not good. His estimate? About $8700. Thanked him and gave him my fax number for the written estimate. And then moved onto the next 2 roofers for estimates. Their quotes? $15,000 and $18,000 respectively. Whoa. That's some serious dinero. So I sign with A-1 and because it's the rainy season we had to wait until there was a break of at least 3-4 days. Signed the contract in December '05 and the roof got done in mid-February '06 and only because they had a last minute push back in scheduling. I'm not blaming them for the delay. It's Mother Nature, whatcha gonna do? The work took about 3 days. It's a big house, very long. A 1913 faux-Victorian-ish building with 3 levels (ground, first and second floors). With a fake front pitch roof where the shingles needed to be replaced. And 2 light wells that they dropped a guy into to work on. A fairly big job, I'd say. My coworker had said that her house (ranch style, roughly 1300 sq. ft. in the East Bay) took about a day and a half. And they swept the debris around her house. The time line makes sense as it a much smaller house. Unfortunately when they finished with the house on the last day, it was about 6:30pm and too dark for any of the workmen to see if there was much debris on the sidewalk. Granted it wasn't like chunks of roofing were laying about, more like bits and pieces smaller than 2", I didn't mind sweeping a bit the next morning before the neighbors complained too much. End result, no leaky roof. What a relief. I kept thinking that the walls would turn to mush. All in all? A very good experience. Nice people. The receptionist can be a little hard to understand (I believe the background of the main guy and the receptionist is Korean). I would highly recommend them to anybody. And do I think that having that contractor's name as a referral helped? Yeah. I got around to googling that guy's name and he probably does a lot of work in the Bay Area and he most likely uses A-1 for a lot of the jobs. read more

They canceled an appointment 15 minutes before we were supposed to meet for an estimate. I was very disappointed because I was coming from the South Bay to San Francisco. A few people recommended this company to me, and I cannot comment about their ability to fix a roof. I, personally, will not work with this company because they cannot hold an appointment, or respect my time. read more

I would recommend this roofing company for their quick communication response, great customer service and above all for the quality of work performed on our roof. They had provided a written estimate soon after inspecting our roof. We had decided to go with A-1 Roofing on a friend's recommendation as well. They were very professional and courteous. It was nice to have such a great crew on the job. They arrived prompt each day and completed the job as indicated. Their employees have years of experience and it shows. They used protective measures to keep the surrounding area clean & cleaned up at the end of each day on the job. You can tell when a company takes pride in their employees and the quality of work they do. I would recommend A-1 Roofing to a friend. Thank you for a job well done! read more

My neighbor referred me to A1 Roofing. Mr. John Park's response was quick and I received a detailed estimate and he explained very well what was going to be done on the job. The workers were on time and completed the job in a day. I would highly recommend A1 Roofing. They were very neat. read more

John Park and his team were great to work with! They completed a roof on my residence and a house I rent out. John is very easy to communicate with and is always available. On my residence they removed and put a new roof in 2 days. The entire crew wore masks and were very professional and made sure everything was clean after they left. On my rental property, the roof was more complex as they needed to remove everything, install new plywood, then the new roof and they also changed the facia board. Since it was a longer job, requiring 3 days, they worked with me and my tenants schedule and were able to split the 3 days over two weeks. Rain was expected the week after they removed the old roof and installed the plywood, so they covered the entire roof to make sure everything remained dry. Overall, I am very happy with both jobs they've completed. They have competitive prices, GREAT communication and are very professional. JB read more

I called A-1 roofing for an estimate for a new roof. They came out as scheduled and had an estimate emailed to me within a day. Their estimate was clear and concise in explaining the work to be done and the materials to be used. This job was for a new roof and they completed the job in one day and then texted me pictures of the finished roof. read more

My experience with Chris was very pleasant. From the moment I made an appointment with him till the work was done. He came on time and gave me an estimate for replacing my 40 year old roof with the best price compared to two other companies who came out earlier. I will definitely recommend this company to anyone. read more

Excellent communication throughout the whole process. Heavy accents and sometimes hard to understand but these were delightful people to work with - Clearly a company that takes pride in their work. Trickle down leadership certainly runs through Yong and his crew as they were extremely respectful of our neighbors' properties and left the surrounding areas cleaner than they were before. VERY competitive pricing and came highly recommended by several friends in addition to Yelp. Quick to provide an accurate and competitive estimate, schedule work and get the job done. A-1 used top of the line materials and Yong was quick to offer advice on how to deal with water from and to neighboring roofs. I would hire Yong and his team without getting a second estimate any day - Very trustworthy. A-1 is an all around A+ in my book. Disclaimer: This review will hold true as long as my roof doesn't leak during the next downpour ;) read more

We just had our roof done and it was a great experience. Everyone was super nice and responsive. It was done very quickly and we barely even knew they were there. read more

A-1 Roofing finished replacing my entire roof on 01/15/2014. I was unable to check the job they had done because I had a stomach cramp. Office lady Sue agreed that I pay off the bill on the following day. The boss Yong Ha showed up on time to collect the payment and told me to call him if anything wrong in the future. On 01/22/2014, I found some oversized nails sticking out on my entrance ceiling. I call Yong Ha immediately. He came to check it out right away and send two workers out to trim the nails down on the next day. I am very pleased with their service and I believe if there is any other problem in the future, they will take care of it. A-1 Roofing's workers have great attitude. The foreman answered my questions with patience. They clean up the floor really good every day before going home. As of now, the only thing I do not know of is how long the roof will last and whether the roof will be leaking or not when it rains but at this time I think they deserve a 5 STARS review. It has been 4.5 years, my new roof has no problems at all. 2018.06.28. read more

Excellent service provided by the A1 Roofing workers. Came on time to the appointment scheduled, even on the weekend and always kept communication bridge open in the following days and answered all questions and concerns. The quality roofing job was performed on time and without any problem. read more

Just had another roof redone by A-1 without getting other estimates. The same excellent service and work. Mr Ha met me the day of the initial visit to the job site as he remembered me after many years. My brother also had his new home's roof replaced by A-1 with the lowest bid of several roofers. It was a complicated roof design and was done efficiently in a week's time during the rainy season. read more

Worst experience ever. I asked for an estimate on a skylight in my bathroom, to replace an old broken skylight. The guy who barely spoke English told me he was going to take a look at the old skylight and call me. I was quoted $500. I came home that day and the skylight was replaced with an old-fashioned aluminum skylight. No one called to ask me for a type of skylight I wanted, they just replaced it. I hate going to my own bathroom now - it is freezing, and there is constant cold air blowing through the three old-school glass panels. I now have to have this travesty removed and spend another $500 on a new simple vinyl skylight installed by a legitimate company. If I only knew I was going to spend $1000 on a skylight..Don't bother with these jokers. read more

I found this company when i needed a roof on my home, my old roof was leaking, i called 4 companines all of them either did not come out for a estimate, or were late on their appt. A-1 came out on a sunday and exactly on time. i dealt with the owner , he came and gave me a good estimate not the lowest or the highest, explained everything that he was going to do, and when i signed the estimate his company were out within a week and finished the job in 2 days, very clean when done with work, and the workers seemed very polite with me. Rain came 1 week later and no leaks!!!!! I would recommend to any one. Also looked on yelp for recommendation for this company and it worked to my satisfaction read more

Fantastic job on our flat roof in the Sunset. Very cost effective, prompt, solid installation.

I had this company do a title 24 roof and gutters on my commercial building in Redwood City . They did an awesome job, very reasonable priced and due to delays in construction over one year later, they came back right away to complete the gutter work. You will be really pleased with their work. They definely stand behind their work and Yong Ha ( owner) is a man of integrity!!! read more

Just had our roof done and have to say that it was a pleasure working with the owner and his staff...very nice people. They were professional, prompt, efficient and accommodating. They cleaned up around the areas nicely. Great job on the roof and a very reasonable price. I would highly recommend them. read more

6 years ago, A-1 Roofing Company replaced the roof on a house we had just bought. I was new to SF and didn't know about Yelp reviews. At that time I would have given them 5 stars for the job they did: arrived promptly, very courteous staff, did a thorough job of repainting and cleaning up. Last week, because of what I thought might be inside damage from a roof leak, I called them back to inspect the spot in question. Frankly, I expected a reluctance, if not an argument from Yong Ha, who owns the company. After all, he did the roof 6 years ago. Without hesitation he came out to look, and then set up a water test of the area, even though he was confident that the job had been done properly. His crew came this morning and blasted the area with water. Result: no leaking. We were all happy that there were no problems with the roof, but as the crew was leaving, they assured me that if I suspected any other problems, they would come right back out and check it again. This is a company that stands behind its work. read more