proven Professionals.
ASPHALT Maintenance
Black Diamond Sealcoating has the knowledge and experience to handle any size job. We are big enough to get the job done but small enough to provide personal, one-
We pride ourselves in our ability to accommodate any schedule for home and business owners alike. We have flexible hours to ensure we get the job done when it’s convenient for you – we strive to minimize any impact on you or your customers as often as possible.
We use commercial equipment and the industries best material to achieve a professional result that you can be proud of, saving thousands of dollars over the life of the asphalt.
WHY US...
Our Customer Promise
What we offer

Residential SealCoating

Commercial SealCoating

Parking lot Striping

Crack
Filling
If you’re in need of driveway sealing, parking lot maintenance or line striping, Black Diamond Sealcoating has you covered. We provide residential and commercial clients with affordable, professional asphalt services.
We service the Portland Metro area, Tri-county area, Hood River County and will soon service areas in the state of Washington as well. Our services include: driveway sealcoating, parking lot sealing, hot crack sealing and pavement markings.
Contact us today at 503-695-2127 for a free, no hassle estimate or simply request an estimate online.

We Offer Senior & CHURCH Discounts!
CUSTOMER FEEDBACK
“Jeff and the crew at Black Diamond Sealcoating 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
WHY US...
At Black Diamond SealCoating you can guarantee prompt, professional sealcoating, crack filling and pavement marking services. We utilize the highest quality asphalt and sealcoating products on the market in addition to providing fast, efficient, and quality customer service.
FEATURED NEWS
Asphalt Sealcoating Gresham Oregon

ASPHALT SERVICE
SealCoating & Maintenance

ROAD MAINTENANCE
Lot Striping & Maintenance

REPAIR SERVICE
Crack Filling & SealCoating