What our customers are saying about us
We’re the #1 driveway sealing contractor in Portland, and we’re here for all your sealcoating needs, whether residential or commercial. Our customer reviews say it all:
Call us, the top driveway sealcoating contractors of Portland, to get started on your driveway, asphalt, or parking lot repairs.
October 28, 2022
Jeff and his team were easy to work with and we love the result!
September 19, 2022
Would definitely hire again for future work! Black Diamond was prompt, communicative, processional, and efficient. Our employee parking lot has never looked better.
August 29, 2022
Jeff and his crew recently resealed and striped the parking lot at my hotel. They were very efficient and professional. I was extremely appreciative of Jeff's flexibility when it came to doing the job in 2 halves to not displace all my guest's vehicles at once, delaying due to vehicles not yet moved, the rain and a couple of other factors. That flexibility and willingness to do whatever it takes to get the job done is why I will continue to recommend them!
August 24, 2022
Very pleased with the seal coating of my long driveway to my house. Good communication and follow-up. Job was completed on time and looks great. I very much recommend.
August 24, 2022
Great company to deal with! Timely, professional, great quality.
August 23, 2022
Black Diamond Seal coating is a wonderful company to work with! They recently coated the private lane that I share with 9 other households and everyone was happy with the work. The quote that was provided was promptly sent and very comprehensive. Pricing was fair and 'in the range' of other suppliers. The team that arrived on-time were friendly and polite. All the work was done as quoted and it looked great when they were finished! I will work with them again!
August 16, 2022
Black Diamond Sealcoating did a great job on my lot. Prompt response with the quote. Fair Price. Crew was prompt and finished in the time frame we discussed. Highly recommend Black Diamond Sealcoating.
August 16, 2022
Great company and service. Finally a professional contractor that is dependable and respectful of my time. Jeff does what he says and sticks to the agreement. No surprises, just good old fashioned service the way it should be.
November 8, 2021
Black Diamond did an excellent job in sealcoating our two private streets. They invested the time to explain their preparation and process, answered all of my questions, arrived on time and completed the sealcoaring. They even returned to inspect the job and applied additional coating where needed. I would highly recommend Black Diamond.
November 3, 2021
Black Diamond was wonderful to work with. Our HOA has two private streets to maintain and they performed crack repair and seal coating for us. They had a very competitive bid, did great work and communicated well throughout the process. We had to be flexible with scheduling due to changing weather - but they adapted and worked with us to get the job done. Would highly recommend and would hire them again if needed.