What our customers are saying about us

RESIDENTIAL

Jeff and his crew did an amazing job on my extensive driveway. They were on time with their service, very quality oriented, and went above and beyond my expectations. We had an unexpected thunder storm during installation that washed out part of the sealer. They came back and repaired this area ASAP without me even asking about it.

Tod H.

A Satisfied Customer

As a home owner with a 700+ foot long driveway, I was worried as to the cost and time involved in sealcoating our driveway. Jeff from Black Diamond Sealcoating not only came in with a great bid, but very quickly had his crew on site with a superior product and professional installation. The crew was outstanding, even after I left our sprinkler system on. They not only coated that wet area twice but did not charge me for my own mistake. I will definitely use them again!

Marc A.

Residential Customer

“Excellent. Jeff informed us of the work to be done and the expected timeline. All was completed within the time line and with EXCELLENT results. We are very pleased with the work!”

Private Customer

A Satisfied Customer

“They did a fantastic job and were easy to work with.”

Private Customer

A Satisfied Customer

“Jeff and crew did our job on the cusp of the rainy season. We really appreciated their professionalism, doing what they said they would do when they said they would do it. Very good communication skills with us and the renters at the job location. Many people have said the job results are excellent. Thanks!”

Private Customer

A Satisfied Customer

“It went great. They showed up in the morning they said and did an outstanding job, paying close attention detail. Jeff’s price was fair and I’ll be using him again in a few years.”

Private Customer

A Satisfied Customer

COMMERCIAL

I’ve used Black Diamond Sealcoating for multiple projects in the Portland Metro Area.  Each time, it was a very professional, smooth project.  The pricing was always competitive, and the project was always completed with top-notch quality.  I would highly recommend Jeff and his company for any projects, and they will be my 1st call for any future needs.

Pete C.

Commercial customer
Jeff and his team did a great job of prepping, including scrubbing off the moss, and then put a beautiful sealcoat on. No overspray, clean edges, solid consistent coverage, and no hassles. The result is top-notch and really adds class to the property.

Kevin Q.

Commercial Customer

“Awesome work!” I have been a Property Manager for 30+ years here in the PDX area, and I have had the opportunity to utilize a number of other companies in the past for my seal coating maintenance needs. We needed to have two of our properties asphalt areas sealed, and choose to go with Jeff’s bid, as it was very precise and accurate! “I Highly Recommend, Black Diamond Sealcoating!! Jeff and his crew were very punctual, professional, and highly knowledgeable. They had no problem working with us closely on both projects, and did a great job in prepping, and cleaning prior to the actual application. After they were finished, they left both properties looking perfect, and “Professionally Done!” “I won’t hesitate calling them for any of or future pavement, or striping needs!”

Private Customer

Commercial Customer
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