Thermal-Tec/Michigan Inc is a family-owned specialty roofing company with headquarters in Cedar Springs, Michigan. We provide our MR Multi-Ply® Roof System to metal roofs throughout the Midwest. Established in 1983 by Earl Siterlet, Thermal-Tec has grown to having offices in Michigan, Illinois, Indiana, and Ohio. In 1994, son, Robert Siterlet and daughter, Linda Blanchard purchased the business from Earl and have worked together to continuously improve the quality and depth of our company. Thermal-Tec is a nationwide, commercial roofing and industrial roofing contractor that specializes in metal roof repair, metal roof coatings, roof leak repair, roof maintenance, roof replacement and roof restoration. Our MR Multi-Ply Roof System is a revolutionary single ply roofing product specifically designed to repair aluminum roofs, corrugated roofs, galvanized roofing, membrane roof, standing seam roofs, and sheet metal roofing. We are THE #1 roofing specialists and roofing consultants.

Our Mission Statement

  • To provide the highest quality roofing system by exceeding customer expectations while maintaining our principals of integrity, service, quality, and professionalism. 
  • To provide a safe, positive, motivating experience for our customers and employees. 
  • To build and maintain relationships within our industry to provide our customers the best value possible. 
  • To commit to be the leader in our industry which is demonstrated in the pride in who we are and who we will become.