Roofing Experts Since 1978
At Guarantee Roofing & Sheet Metal, our roofing experts are guided by one simple principle – We do what we say we’re going to do. We believe in an honest days’ work, fair pricing, using the best products available, continuous improvement and ensuring our customers are happy with the work we deliver. Our name says it all.
Earning the trust of clients for more than 25 years.
Guarantee Roofing & Sheet Metal of South Dakota, Inc. was established in Sioux Falls in 1981 and has been involved with installing more than 100 million square feet of commercial roofing systems across the Midwest – that’s an expanse equivalent to more than 2,000 football fields.
Across all business categories, we’ve earned the trust of our clients because experience matters when you’re protecting your business, your customers and your investments with a long-lasting roofing system that you can rely on.
- Schools/Universities
- Hospitals
- Churches
- Factories
- Retail – Stores
- Other Institutions
Our commitment to quality and track record of reliability and service have allowed us grow throughout South Dakota, Minnesota and Iowa, with hundreds of satisfied customers.
Industry Awards and Certifications
Our relationships with the best roofing material manufacturers and a strong network of professional craftsmen have helped us to earn not only the confidence of clients, but recognition throughout the commercial roofing industry.
- Firestone Building Products Master Contractor Status – 25 years
- Firestone Building Products Inner Circle of Quality Award – Ten-time recipient
- 2014 Firestone Building Products Project of the Year Recipient
- Construction Specification Institute – Charter Member
- Firestone Advisory Council
- AIA – Associate Member
- NFIB – Member
Meet our Team
While we’re proud of the awards we’ve won and the certifications we’ve earned, we’re most proud of the people on our team that ensure every roofing project is completed as promised.

Jamie Paasch
President

Luke Duman
Vice President/Project Manager/Estimator

Nicole Paasch
CFO

Keith Boyd
Maintenance Supervisor/Estimator

Will Tedmon
Safety & Loss Prevention Manager

Brad Gibbens
Inventory & Fleet Manager

Brett Korn
Estimating / Drafting

Daryl Wagner
Controller

Erica Mariona
Administrative Assistant