Address: 940 NW Dunbar Ave, #100, Troutdale, OR 97060, USA • Phone: (503) 695-2127 • Black Diamond Sealcoating is here to assist you keep your pavement in good shape. Our company provide everything from sealcoating to parking lot striping and marking in addition to pavement crack filling. We service residential and commercial around Oregon. We are located in Troutdale and Portland Oregon. We get the job done right the first time with quality together with a highly experienced crew. Contact us today and ask about our $100 off coupon.