Insulation Matters: Superl Inc.’s Expertise in Northern State Energy Efficiency
A Minnesota insulation subcontractor grows from its roots to become a major power player.

Images courtesy of Superl Inc.
How does a kid growing up on a dairy farm move to a life in construction? Just ask Mark Dietz, president of Superl Inc. The company, based in Lino Lakes, Minn., has been in the insulation business for 30 years. Before he made the move to becoming a contractor, Mark was attending a community college, taking courses, presumably wondering what he was going to do with his life.
But fate paved its way. Now, this Midwestern contractor provides services in commercial air barrier, insulation and firestopping to his customers, with Superl’s roots beginning in south central Minnesota. Now, the company works throughout the country.
Superl is a full service insulation contractor. The company installs vapor, fire, smoke and sound control systems in all types of commercial construction. All systems the company installs are passive. Superl can provide input anywhere from concept to completion, including design, research, detailing, budgeting, engineering judgement and thermal analysis.
“We deliver on the job—on time—with proper installation. We offer quick solutions for atypical site conditions,” Dietz says. “We have installed systems in thousands of buildings in 35 states, from coast to coast.”
You hear that folks? Thousands of jobs from one end of the country to the next. Dietz and Superl certainly exhibit signs of ambition. The subcontractor currently has anywhere from 50 to 110 employees.
In Dietz’s words, the commercial market fluctuates with the economy. Makes sense, given this is the rule of law in our society. But, as he says, fire containment systems have become more of a necessity since 9/11.
“There is currently a lot of bidding activity with projects moving forward,” he says, adding that since the pandemic, the biggest challenge has been trying to get the materials the company needs for its jobs.
According to Dietz, the rest of the year looks promising. He says everything looks good provided the company is able to secure the materials it needs for the next project. He says his long term goals are to continue their growth in the firestop and insulation industry.
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