Our Team

As a local, family-owned business we take great price in our community and our team shares this mentality.  With more that 80 years of combined experience, the Sueppel's Siding and Remodeling Team is the foundation of our reputation for quality.

Excellence and Professionalism 

Our employees are rigorously trained, certified and educated to provide quality craftsmanship and customer service. We stand behind our work and adhere to strict quality standards for all of our employees. 

Giving back to Our Community

We take great pride in supporting local charities and organizations.  Our community involvement is inspired by our employees, clients and the groups that make Iowa City a great place to live.  We give of our time, talent, and treasure to continue to the growth and development of our town and neighbors.   

Safe and conscientious work practices

Our employees utilize safe work methods on every job site. From hard hats to harnesses safety is a priority. We treat each home like our own, our crews work hard to protect your home inside and out while they work. We hang plastic tarps to protect floors, cover vents to keep dust controlled, cover and protect landscaping and more. 

Some of the local organizations we support include:

Local Schools and School programs:

Longfellow Elementary

Lucas Elementary

Hoover Elementary

Penn Elementary

Regina Catholic Education Center 

City High Dance Team

West Branch High School Earth Day 

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The American Cancer Society:  Relay for Life

The Sugar Bottom Scramble Bike Race

M.Y.E.P. (Mayor's Youth Empowerment Program)

Johnson County Dog Park

Table to Table

Iowa City Policeman's Association Shop with a Cop

Habitat for Humanity

Leukemia and Lymphoma Society Light the Night Walk  

Our story

Paul Sueppel retired from the Iowa City Police force in 1995 and opened Sueppel's Vinyl Siding, installing siding, windows and doors.  GT Karr started working here during high school, summer breaks and returned full time after getting his degree in Construction Management from UNI. In 2002 GT Karr bought Sueppel's from Paul and expanded the scope to include home remodeling, renovations and additions. As part of our commitment to education and community involvement GT currently serves

on the boards for the  Iowa City Home Builder's Association as Second Vice President, The Remodeler's Council Chair, Parade of Homes Chair, Senior Housing Action Committee, Johnson County Climate Action Committee Steering Committee and At-Large on the Historic Preservation Commission.