Theisen Roofing & Siding Co., Inc.

03/19/2026

01/15/2026

Jenna is out furthering her roofing knowledge and staying up to date on all things roofing!

01/06/2026

Happy New Year! We’re excited to celebrate two major milestones in 2026...55 years in business and the retirement of Jeff Theisen!

Jeff has been with Theisen Roofing since the very beginning in the early 1970s. Alongside his brother, Brian, he helped guide the company into what it is today. As Jeff begins this next chapter, he’s looking forward to spending more time with family and traveling.

Thank you, Jeff, for your decades of dedication and leadership!

12/23/2025

Our email and voicemail will be checked regularly. In case of an emergency, such as ice damming, please email ([email protected]) or leave a voicemail (815-758-8998) with your name, address, and phone number.

✨May this season be filled with joy, peace, and special moments with your loved ones✨ -The Theisen Team

12/05/2025

Our safety inspector says the tree passes… as long as he gets treats!🐾🎄

11/11/2025

Thank you to our veterans!

Those that have a new roof installed by a CertainTeed Credentialed Contractor with a SureStart Plus warranty are eligible for a $250 rebate from CertainTeed. Visit certainteed.com/roofs4rwb for more details.

*This discount is offered to all Military personnel - Active, Veteran or Retiree and Gold Star families of the U.S. Military.