Blackrock Asphalt has been a leader in asphalt seal coating and maintenance in Wenatchee since 1999. Commercial and residential projects, no job too big or small. BlackRock Asphalt and Sealcoating is your local asphalt seal coating and maintenance company, we always put you first. Our Focus on high quality work, attention to detail and a friendly crew that care about doing the job right, make us the first choice for all your asphalt maintenance needs!