Black Diamond Sealcoating is a professional asphalt sealcoating company based in Portland, Oregon. They specialize in providing a range of asphalt maintenance services, including crack filling, sealcoating, asphalt repairs, and line striping. With their extensive knowledge and experience in the industry, they have the expertise to handle any size job. They are dedicated to delivering high-quality results and strive to provide personalized, one-on-one service to each customer. The company uses commercial equipment and the industry's best materials to achieve professional outcomes that customers can be proud of. Black Diamond Sealcoating is fully licensed, insured, and bonded for their service areas, which include the entire Portland metro area, Willamette Valley, southern Washington, Hood River County (for larger jobs), and Vancouver areas. They have received top reviews from satisfied customers on platforms such as BBB, Angie's List, Thumbtack, and Google.