I got three quotes. Cornerstone was very competitive. What set them apart, for me, was James seemed to have a better understanding of the reroof process and specifically roof venting than his competitors. Install was seamless and the roof looks great. read more

Responsive, prompt, and more thorough than I could have asked for. We were looking into buying the home we were renting. They had quoted the same house for a new roof 5 years prior, unknown to me, so they shared that recommendation on our first visit, which helped validate the condition and needs very early on. I believe James was our contact's name--absolutely fantastic. The the woman who set up the appointment was incredibly informative and warmly professional. We decided not to buy; but if I ever need a roof I'll be calling Cornerstone. read more

Every question or concern we had was addressed. Very friendly and professional workers, project coordinator and quote estimator. Quick, thorough and the roof looks fantastic! read more

We were amazed with the speed of the project, the quality of the work, the respect for our property, and the clean up during and after completion. read more

This business treated our under-1000 square-foot home's re-roofing project as if it was their highest priority. We cannot speak highly-enough of these people, every one stellar, from Kristi in scheduling, Mike the estimator (the nicest yet professional guy), Craig who notified us every step, Juan the final checker, the crew who were so nice and kept an entirely clean site and clean-up. And the whole focus: Our roof and new gutters could not be more attractive and well-done. We are so pleased! What a high bar for any other business out there. read more

Cornerstone didn't miss a beat when we began the search for a reputable roofing company to replace our old 3-tab shingles. James presented multiple options and went over some necessary ventilation changes, along with offering some overall aesthetic options necessary to accommodate the accented trim around the front of the house. The job commenced 3 weeks later and we are extremely pleased with the outcome, as well as the 5* extended 25 yr. warranty protection. Cornerstone was very responsive, professional, courteous, and the cleanup was spot on from beginning to end. Highly recommended. read more

Roof looks great! From proposal to install to inspection, everyone acted with professionalism, was helpful and responsive. Quality at a fair price." read more

I selected a bid from Eastside Roofing out of three bids Spring 2022 because it was $3k less on a $36,000 dollar job. What a mistake. I should have hired Cornerstone in the first place. My next roofing job we needed, I had Cornerstone roof our double wide and deep garage Spring 2023. What a difference a roofer made. The courtesous and respectful salesman had more than 20 years experience on the roofs of houses as part of the crew before selling anything and the company's crew is top notch professional. Here are the differences that came standard with Cornerstone that the other roofer didn't do at all: 1) The ops manager assured the dumbster was ordered, playwood to protect our driveway was placed and I was in agreement with the placement of it. 2) The next day, the ops manager checked in with me in the morning on my doorstep and on time. 3) The crew's first thing to do was to lay plastic on the ground to collect debris. 4) A safety manager showed up not too long after and posted a notice of the nearest medical clinic address and phone and observed for a while. 5) The job was finished on time and no one was at the door to collect a fee. 6) The next week the A/R personnel phoned, was kind and assured I was pleased. They emailed an invocie for the balance. The other roofer scribbled on the original bid. 7) I received a 25 year guarantee with a letter in the mail from Cornerstone asssuring me of the quality of their workmanship and how they back it up. 8) Cornerstone registered my shingles with the manufacture and I recieved a 30 year guarantee from the manufacture a few weeks later. {all 8 of these things didn't occur with the first job and I had to pay Cornerstone to fix the things the other roofer left behind} Hire them in the first place. Bob of Snohomish (Dutch Hill) read more

We had Cornerstone roofing replace our roof in the summer of 2020. They were excellent from start to finish. We also recently had them come back and patch an old sewer vent that our plumber never took care of. They did a great job, quickly patched the area, and were very reasonably priced. They also replaced our gutters. We couldn't be happier with their service! read more

Cornerstone wasn't able to do my repair project, but I'm compelled to write a 5-star review for them anyway. They responded to my request for a quote very quickly, and took the time to give me a recommendation for who to contact for my job. They also gave me advice on looking up my warranty to see if the repair work may be covered by that. Not often these days do you see a company going out of their way to help you when they're not going to make a dime from it. Really appreciated it! read more

You could not ask for a more honest, amazing, responsible, and respectable roofing company. From the owner, Jim, who is a delight, to the office, who are super nice and helpful, to Craig, the awesome (and funny) foreman who seems to work 24/7, to the roofers themselves, who are pleasant and the hardest working roofers I've ever seen. Even my handyman, who has been over here while they're working, commented on how crazy hard they work. But in addition to the obvious quality, their finesse and skill with fixing my sagging roofline, the ease with which they removed a surprise double-done roof with two layers, and rotting wood, the true pleasure it is to work with such a competent and friendly and nice team cannot be beat. I highly, HIGHLY, recommend! read more

My name is Kenneth Cole and this company is five star all the way. They installed a new roof on our house and it looks fantastic! Everyone we dealt with from estimate to final inspection was professional and friendly. Fair price with an excellent warranty and job was finished on time. Also excellent cleanup after job was finished. Special shout out to Mike Little and Kristy, thank you! read more

My roof needed to be inspected for damage. My home is three stories, so it's not easy to get to the roof. Cornerstone Roofing were very straightforward, clear, and fair with how they explained what they would charge for doing this inspection given the height of my roof. The person who did the inspection was efficient and seemed extremely knowledgeable. After the inspection, he said there was no damage to my roof, and nothing needed to be done. They charged be exactly as they had described, and I appreciate that they were straightforward and honest that my roof was fine. Good customer service. The roof inspector came wearing a mask, which I appreciate too. read more

Dave came out and did a bid for me for my roof leak. He was honest about what he saw and he's been doing this for a while so I felt like I could trust his advice. He sent me a bid with an offer to do work, but not without also suggesting a solution that I could try first that didn't cost me anything. He then sent me an email and a hard copy of the bid with beautiful photos of everything so I could see the places he was suggesting to complete the work. I will call them again in the future as I know they do quality work, but not unnecessary work. read more

Rain has returned to Seattle. I noted a drip between my gutters and fascia. I couldn't tell if it was potentially a gutter vs. flashing vs. roof issue. Since what prompted my original roof replacement was a somewhat similar leak I figured I should have it checked out. Called Cornerstone and without hesitation Lenny from the repair division came out to inspect the next day! He felt the flashing/roof work looked good but identified that my gutter nail in that area was back-angled towards the house and thought that water might be running along the nail and seeping in-between the gutter and fascia. While Cornerstone did not replace my gutters with my roof replacement Lenny graciously worked to seal the gutter nail area with silicone where it penetrates the fascia. He also took the time to look at other areas around the house and identified a few more places and helped seal those as well. What I really appreciate is that Cornerstone STOOD BY THEIR PLEDGE TO GUARANTEE THEIR WORKMANSHIP and even went beyond in my case. Further, Lenny clearly cared to help me - he brought his expertise (I wouldn't have thought about a back sloping gutter nail) and what took him just a little bit of time saved me potentially having to have a gutter service come out or try to do it myself (homeowners and ladders can be a bad combo). Lenny could've just said "it's not the roof" and took off but he didn't and he again demonstrated what I originally posted - In my experience, Cornerstone and its employees care about their customer's homes and satisfaction. They go the extra mile because it is the right thing to do. Even after going above and beyond Lenny asked "Is there anything else I can do for you today?". That's great customer service and again reflects well on the culture the company has built. Thanks Cornerstone and Lenny! read more

Cornerstone Roofing: I am so impressed, especially of the integrity and follow through. I purchased a 30-year old house with an 11-year old roof provided by Cornerstone Roofing. The warranty was transferable to us as the second owner. When I called Cornerstone Roofing to put the warranty in my name, they immediately found the contract, updated the information, and said that they would of course honor the contract. They sent an expert out to inspect the roof and he found a couple issues. These issues were promptly fixed per the warranty. Then we discussed the fact that the previous owner on his own created two new roof vents and that two other vents were no longer used. I then hired Cornerstone to redo the homeowner's vents that weren't ventilating quite properly and to close up the two vents not being used. I can't say enough on how patient Michael Little was with me. I had so many questions and was quite stressed, having purchased a house that had issues, in some cases unsafe (e.g. electrical, gas), created by the previous owners that I needed to fix and pay for. Michael was so professional and again, the word integrity comes to mind foremost. Thank you. read more

Cornerstone Roofing replaced my old shake roof and did an excellent job. I only solicited quotes from A+ BBB-rated roofing contractors who had been personally recommended by someone I knew. Cornerstone came in very competitively priced and gave me a thorough proposal with several pricing options. I also had scheduling issues as I had a deck contractor and painter lined up to start after them. They were able to get me into their schedule a month earlier than promised. I had one small issue that needed to be fixed and Craig was back promptly to fix it with no issues or questions. Their whole team, from the estimator, to the installation crew, to their office staff were very professional and great to work with. I highly recommend them! read more

I've hired Cornerstone on two separate occasions, once to re-roof a detached garage and then to re-roof my house. Everyone there was excellent to work with on both jobs. Their estimate both times were more thorough (and reasonable) than any competitors. The detail that went into the estimates avoided surprises down the road. The crews are fast, efficient, and do a great job on cleanup. Their price seems where it should be and they are no nonsense and professional which can be priceless in my opinion. read more

Very pleased with the job Cornerstone did. We had a new roof put on. We got other quotes, but found Cornerstone to be the most reasonable (not the lowest, but you should see the reviews the lowest guys have). They did the job in one day, since we don't have a huge home. Great clean up. Very responsive to a cosmetic issue we raised after some flashing needed to be hammered down. Sent someone out immediately to fix it. I do recommend this company to anyone who needs a new roof. read more

A truly reliable, trustworthy company. I found this company online; was impressed by the outstanding review, and now I am firm that it lives up to the high rating. It started with a thorough inspection for this rather minor repair. Michael checked not only the points I found leaking but also the entire attic and roof to spot potential causes, and gave me detailed explanation of his finding, answered all my questions patiently. The quote was very competitive. We scheduled a time for repair, and there was a call 2 days before the date as reminder. Repair day came; Sunny worked hard on the roof for hours. After it, all was cleaned up; I got photos of completed work - well done with attention to details; I was billed the same as quoted. The whole process was smooth and efficient, with clear and thoughtful communication. For a well-run company with high quality standards like this, I will look no further for my future roofing needs. read more

I had a great experience with everyone from CSR. The quote was completed promptly and was very thorough with clear explanations of the work to be completed (including pictures). A team member came to the house to show us roofing samples. We then drove to a few homes that had the same roofing material that we wanted to confirm our selection. The CSR roofing team was super efficient and professional; in and out in two days. During the final inspection, Juan took his time walking me around the new roof and answering my questions. He even pointed out some chimney work that I needed to have done and answered some questions about siding maintenance! Great experience all the way around! read more

I did a lot of research into the roofing companies I received estimates from and all were highly recommended including CSR. However, CSR was the only company that offered a 25 year labor warranty, they also have an A+ BBB Accredited rating and they had the most professional package which included everything you needed to make a good decision. They were also the only company that didn't require a down payment. And they were the only company that offered a discount if your invoice was paid in full with a week of receiving it. Their pricing was not the cheapest nor the most expensive. But all estimates were within $500 of each other so they were all basically the same. With the pay off discount, they came it almost at the least expensive. They were fast and the quality appears first rate (they have to with that 25 year labor warranty). First day was the tear off and laying down matting, 2nd and 3rd day was installing new roofing material (CertainTeed Presidential Shake) and 4th day was clean-up. read more

Cornerstone Roofing did an excellent job with our roof. The quote was reasonable, and included an excellent warranty on the work and the materials. It looks GREAT and they got it done in a day and a half, which was incredibly for me as a stay at home mom with a toddler! The main reason I am giving a 4 star review is that scheduling was a little tricky. Snow was a factor but once the weather cleared up, we set a date. Then we got a call that materials were being delivered and the crew was starting three days earlier than scheduled. That was a little frustrating, but other than that, everything was great. We would definitely work with them again. read more

We had Cornerstone bid and work on a replacement job for our 1914 house. It's only about 1,000 sq feet so it was a relatively easy job for them. Overall we were pleased with their work, but had a couple negatives (see below): Pros: - Their estimator, Dave, is SUPER thorough and is not a typical sales rep. He explained everything and even told me of a couple areas I could DIY instead off paying them to do. I really appreciated his honesty the whole way through. We went with Cornerstone due to Dave's approach - The crew cranked out the roof in 1.5 days and seemed to do a nice job. - They double check the work and left us feeling secure that the job was done right. Cons: - They used brown vent covers and pipe vents instead of black. We chose black walnut shingles, so it would've been nice to have it match. I don't mind as I don't see our roof often, but the premise is what bothers me. I actually called them out on it and only received an explanation after all of the work was complete. - The care/cleanup could have been better. They covered our plants, but damaged our down spout extensions (which we had recently painted). I also had to wipe down all of our outside window sills (all had black dust residue on them). read more

We had Cornerstone Roofing come out a year ago to give us an estimate on a leaking overhang (eave). The gentleman went up and conducted a thorough inspection, and with my permission made a temporary fix until the work could be done. We had other priorities, and had to go through the winter on the temp fix alone, which worked fine. I rang them one year after the original estimate. They revisited and we had them go ahead with the work. Their repair specialist was top notch and very professional. It was an honor to have such a skilled craftsman working on our home. I've had neighbors come by and comment on the quality of the work. It's great to see the thorough repair every time we pull up, and the piece of mind we got is priceless. When it is time for a new roof, Cornerstone has our business! read more

I had a pleasant experience with Cornerstone Roofing though I didn't use their service. I made a quote from the website but unfortunately was told they have a backlog in roof repair mostly due the recent snow. To my surprise later on I received a very detailed email telling me that my roof warranty might be still valid and recommended me several reputable companies that could help inspect & repair my roof. read more

Extremely professional and helpful. I liked how Michael accurately found root cause and provided exact solution needed.

During the midst of COVID19 we discovered our 20 year old roof was leaking. We expected the worst and asked a couple of companies for a bid. Cornerstone was fast to respond. He checked out the problem and gave us a quote of half the price of the other company. Then he offered to check out the rest of the roof. We figured that's where he'd get us. To our surprise, while he did find another problem we didn't know about, he offered a quick fix as opposed to a new roof that was still cheaper than the other company (who didn't even look at the rest of our roof). And even though we hadn't committed to using Cornerstone, he did a quick patch for free to keep it from getting worse. Job was done quickly at an extremely fair price. We know who we'll be calling when we do need a new roof! read more

I recently used cornerstone to repair a leak in my roof. They were very honest about the amount of work required and did not try to oversell me as 3 other companies we contacted tried to. The quote was very reasonable, they began right away and completed the same day. After this experience, I would recommend them to anyone! read more

Several businesses never followed through. This one not only came and inspected the roof leak, they fixed it for free! A more long-term fix would cost me money, of course. Would highly recommend! read more

I contacted Corner Stone after couple of free estimates Guys scared me pretty hard. They said I would need a new roof as soon as possible. I bought this property 6 months ago and I knew that I would need it in like 4-5 years but not now. A guy from Corner Stone showed up. He went up the roof and came down and said nope you don't need it right away. He checked attic and said it's not terrible here either. He did suggested if I want to make a few repairs here and there. He said it's not absolutely necessary but should be helpful. He said you probably have 3-4 years on it. Such a relief it was. These guys are awesome. No pushy sales at all. I know one more company like this, so I future I am going to select between these 2 companies when I really need to replace it. Really impressed. read more

Every part of the my 19 year relationship (1 roof, it's warranty, and one replacement) with Cornerstone has been excellent.

Outstanding company. Price was very fair when compared to three other bids. Workers were phenomenal - no nonsense and worked tirelessly to do the job. Cleanup was also great with followup by owner. read more

"Excellent job and everyone we dealt with was extremely personable and conscientious."

We love Cornerstone Roofing! I am the admin for Tenhulzen Painting & Construction Partners and Cornerstone is one of our trusted business partners. They have stepped in and helped roof or roof repair many of our painting & construction projects with beautiful results. They are professional, efficient, tidy and take the safety of their employees and their clients very seriously. We love working alongside such a professional team. We highly recommend their services! read more

Responsive, professional, competent, reasonable price. They fit me in quickly and the work looks great. I would definitely use them again.

Very pleased with Cornerstone. We had a leak in the roof next to our chimney. Cornerstone repaired the roof and flashing. Many roofers didn't even return our calls. Cornerstone was very professional and responsive in every respect, from providing a highly competitive bid through the repair today. Recommend highly. read more

I had cornerstone roofing replace my roof about three years ago and am still astounded by how well they did. They were on time, customer centric and cleaned up after themselves. I have recommended them several times to clients and have never had any complaints (only compliments) from them. A+++ read more

Corner Stone completer re-roofed our home. Their workmanship and speed of installation was excellent. I have one minor complaint with the removal of the old roofing material. Some of the old wood shake fail into the attic areas and I later climbed through the insulation and removed them myself. Of major concern was the excess roofing material ordered, which the owner pays for. They over estimated 10-15 bundles, close to $1000 dollars. I suggested using my neighbors measurements whose roof they had replaced earlier, the neighbors have the same exact roof line. If they had even bothered there is no way they would have been that many bundles extra. They left 5-6 bundles stacked for me next to the driveway. I retrieved many more they had thrown into their dumpster. This leaves me an ethical question! When the job is finished Corner Stone will ask if you wish to retain the extra bundles. If not they will pick them up and return them to stock. (what do most home owners need with 15 extra bundles?) You receive no reimbursement. You can visualize over time what the benefit it would be for the company. The ethical concern is do they over estimate for their own benefit? I have my opinion. read more

I had Cornerstone replace the roof on my house in 2007, after obtaining bids from several companies. The company made multiple recommendations for me to consider in order to improve the existing roof system, ventilation, etc. They were very proactive in helping me make informed decisions and as a result, the new roof system was far superior to the existing and installed at a very competitive price. The experience was one of the best I have had with a residential contractor. Unfortunately, some minor leaks developed after about 6 years and I contacted the company to inform them. They have a 20 year warranty on workmanship, and they immediately sent a representative out to inspect. They confirmed that the problem was due to some problems with nailing (I have an exceptionally challenging roof in terms of roofing installation, with many transitions that are difficult to apply roofing and flashing to). Within a week, the company sent out a crew to correct the problem, at no charge. If you want to really know a company's true character, observe how they deal with warranty work. Cornerstone scored 10 out of 10 in terms of service, and I highly recommend them. read more