Choose a Professional... It Costs Less

Roofing is a complicated and demanding trade. At M.J. Dalsin, we understand the challenges of our industry. Because of the complex nature of our industry, we take care to utilize the most up-to-date methods and materials available. This way, we ensure that every job we complete will withstand the test of time.

At M.J. Dalsin, our Midwest roots date back through three generations to 1912. This foundation of experience speaks for itself in terms of our commitment to quality, innovation and customer satisfaction. It guarantees that quality service will be available for you roofing needs in the long term.

Based in Sioux Falls, South Dakota, M.J. Dalsin provides local, professional service to you and throughout the United States.

Looking for the best partner for your next roofing project?

M.J. Dalsin has the experience, knowledge, equipment and technology necessary to get the job done right the first time. We are equipped to handle:

  • Commercial, industrial and government roofing projects of all sizes.
  • New construction.
  • Complete re-roof or retrofit.
  • Roof maintenance, service and repairs.
  • Single ply EPDM, TPO, and PVC as well as metal roofs and composite metal wall panels.

The best roofing contractor is only as good as the workers who actually install your roof. M.J. Dalsin works only with trained, experienced roof mechanics; not inexperienced laborers employed for one or two interim jobs. Professional year-round crews assure top quality craftsmanship.


Your roof is a big investment, and for optimum performance all roofs require periodic, comprehensive, non-destructive inspection and maintenance in order to perform as designed to provide a long, effective service life. M.J. Dalsin offers:

  • Periodic roof inspection programs, including annual or bi-annual inspections.
  • Dedicated roof repair crews with over 60 years of experience can be on site within 24 hours or less in most instances.


M.J. Dalsin's in-house sheet metal service department offers:

  • A complete line of capabilities to enhance your building's appereance.
  • Design, fabricate and intall composite metal wall panels (store fronts), metal roofs, gutters and downspouts to meet your specific needs.
  • Extensive knowledge and skill in metal fabrication and installation of a standing seam metal roof.
  • Highest quality-control standards to assure that our sheet metal work gives your building aesthetic appeal and years of durable service.

M.J. Dalsin A Tradition Since 1912.