Welcome to Theisen Roofing & Siding Co.

Locally owned and operated since 1971, Theisen Roofing & Siding provides quality, professional roofing, gutter, and repair services in Dekalb and the surrounding areas. As third generation roofers, owners Jeff and Brian Theisen have over 30 years of experience in the industry, servicing residential homes, condominiums, apartment complexes and more.

Theisen Roofing has spent decades building quality relationships with our local communities and our customers, earning respect and repeat business with our reliability, professionalism, and attention to detail. Our customers are important to us, and we work hard to ensure that our work is done completely and correctly the first time around. We have been members of the Better Business Bureau since 1993, members of the NFIB, and Chamber of Commerce members of Dekalb, Sycamore, Genoa, and U.S. chambers.

Call Theisen Roofing & Siding today for all your roofing, gutter, and repair needs!

Virtual Tour

Click here to see our new facility!


Theisen Roofing and Siding Co.
  • Roofing
  • Gutters
  • Free Estimates
  • Repairs
  • Aluminum soffits and fascias