About
Mortenson Roofing Company is a specialty slate and tile roofing contractor founded in 1937 and headquartered in Frankfort, Illinois. The company holds Florida Certified Roofing Contractor license CCC1326626 under qualifier Michael Lukis, enabling it to perform roofing work in Florida in addition to its primary service areas across the Chicagoland region, Northwest Indiana, Michigan, Wisconsin, Ohio, Iowa, Louisiana, and across the nation. Mortenson Roofing specializes in slate roof installation, repair, and restoration; tile roofing services including installation and repair; copper roofing and gutters; leak repair; roof damage inspections; and historical landmark roof restoration. The Lukis family acquired full ownership in 1986 after Bob Lukis began at the company in 1958 and became a partner with founder Gunnar Mortenson in 1980. The company is family-owned and locally operated out of Illinois, with all work guaranteed.
Services
Service areas
License verification
License checked against the Florida Department of Business & Professional Regulation (DBPR). Confirm current status before signing any contract.
Location & service area
Business hours
Business hours
- Monday
- 9 AM – 5 PM
- Tuesday
- 9 AM – 5 PM
- Wednesday
- 9 AM – 5 PM
- Thursday
- 9 AM – 5 PM
- Friday
- 9 AM – 5 PM
- Saturday
- Closed
- Sunday
- Closed
Google reviews
We hired Mortenson to repair some tiles and address flashing issues, and we were very pleased with the work. (No leaks so far!) They also fabricated and installed a new copper chimney cap for us, which looks great atop the old house. We don't have anyone nearby who will touch the tile roof, so we were grateful to find company that provides expertise and quality work. Thanks!
Mortensen Roofing repaired my slate roof. Everyone I dealt with from the company was genuinely friendly, knowledgeable, and professional. The job was done very well and the workers were fastidious in their cleanup, not just at the end of the work, but at the end of work every day. I will hire them again if needed and highly recommend them to anyone looking for truly professional roof work done.
We have been using Mortenson Roofing for over 30 years. One of the most reliable and efficient service companies we use for our facility. They have repaired our roof many times in a professional manner and always exceeds our expectations. They have worked on our copper, clay tile, and rubber roofs. Each to our great satisfaction. We highly recommend them for all your roofing needs.
We have a clay tile roof on our historic home, and unfortunately, the previous owners did not repair it properly, despite their claims. Just three months after moving in, we discovered mold and ongoing roof leaks. I reached out to Mortenson, and Andrew has been absolutely fantastic—responsive, helpful, and professional. The roofer who previously "fixed" the roof claimed it was impossible to identify the source of the leaks and recommended a complete roof replacement. Andrew immediately dismissed that idea, explaining that in most cases, the source of a leak *can* be found and repaired without resorting to an expensive full replacement. He quickly sent out his foreman, Julio, to evaluate the issue. Andrew is incredibly knowledgeable and a pleasure to work with—we’re so glad we called him!
We have been using Mortenson Roofing for our slate roof for over ten years and are very pleased. Whether its a simple check to make sure no slates are loose or more extensive repair of the flashing, etc., they do excellent work. We highly recommend them!
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