About Us

     Custom Asphalt INC. is a locally owned company that was started in Hastings, MN in 1991 by Jerry Grotjohn. For the past 30 years, Jerry has worked incredibly hard to create a high-quality business that is economically reasonable with its pricing. This past year, December 2020, Jerry extended his business to Mike Knoll. Jerry has known Mike for over 5 years and has worked with him on various occasions. Mikes’ son, Calvin Knoll, has also worked for Jerry in the past, hauling and paving custom asphalt.

     When Jerry offered the business to Mike, he was very excited to continue Jerry’s legacy of owning custom asphalt. Mike Knoll was self-employed for many years and has worked vigorously to make sure his customers are satisfied with his work. Mike is excited to continue working with Jerrys best men to resume creating high-quality custom asphalt for a fair competitive price. His family will also be helping him in every aspect of the company making Custom Asphalt INC. a family-owned and operating business. Mike is ready to start working this spring to prove his hard-working ethics and to continue making the company grow.