proven Professionals.
ASPHALT Maintenance
Black Diamond Sealcoating is one of the leading asphalt sealcoating company in Portland, with 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 industry’s 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...
We are a local asphalt sealcoating company located in Portland, Oregon. Our work areas cover the entire Portland metro, Tri county areas, southern Washington and Vancouver areas. We are fully licensed, insured, and bonded for these service areas.
Our Commitment to Our Customers
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. Black Diamond Sealcoating strives to build and keep an open, honest and lasting relationship with every customer, we want to earn your business for life.
It is our promise to our customers to provide high quality and cost-effective parking lot or driveway repairs for your Portland home or business. Our highest priority is to strive for excellence in every job we do.
What our services and products offer
Black Diamond Sealcoating offers professional residential and commercial asphalt maintenance services including crack filling, sealcoating, asphalt repairs, and line striping and pavement marking services for your parking lot, home driveway or roadway, Browse our site to learn more about the asphalt maintenance and services we provide, then contact us for a free no hassle bid.

Residential & Commercial SealCoating
- Beautify and fortify asphalt to prevent premature breakdown
- Prevent oxidation and deterioration
- Spill and damage prevention
- General maintenance and upkeep

Parking Lot Striping
ADA compliance
Helps your lot communicate better
Efficient traffic and pedestrian flow

Crack Filling
Extend pavement life
Prevent water damage to base layer
Prevent breakup
If you’re in need of driveway sealing services, parking lot maintenance or line striping, call Black Diamond Sealcoating. We have you covered every step of the way by providing residential and commercial clients with affordable, professional asphalt maintenance 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.

FEATURED WORK
WHY US...
Our Customer Promise
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.
CUSTOMER FEEDBACK
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.
Marc A.
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.
FEATURED NEWS
How to Protect and Restore Your Asphalt Surfaces
Asphalt Sealcoating Gresham Oregon

ASPHALT SERVICE
SealCoating & Maintenance

ROAD MAINTENANCE
Lot Striping & Maintenance

REPAIR SERVICE
Crack Filling & SealCoating