AT Klemens has been serving customers throughout Montana since 1928. Quality materials, combined with quality service, and outstanding warranties on labor and materials have made AT Klemens the recognized professional in the roofing industry.

Our commercial roofing department has been serving the Great Falls, Montana area since 1928. AT Klemens takes great pride in the service we provide. Our customers in Cascade county and beyond have counted on our dependable service and quality workmanship, allowing us to grow into the largest roofing contractor in the region. We are licensed, bonded, and insured and have many references. Our technicians are trained to provide the safest and most efficient means of offering you a solution for your commercial roof. We have installed roof systems and performed maintenance work using materials from our suppliers.



  • Single-ply Roofing
  • Modified Bitumen
  • Coatings
  • Built-up Roofing
  • Waterproofing Roof Replacement
  • New Construction
  • Repairs & Leak Services
  • Preventative Maintenance
  • Roof Asset Management
  • Customer Service
  • Historic Restoration
  • Skylight/Smoke Hatch
  • Daylighting
  • Licensed Applicators for Several Brands
  • Members of National and Montana Roofing Contractors Associations