Meet the Interstate Roofing Team

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    Derek Kasten


    Derek started at a young age in the family business.  He loaded materials at the warehouse his first two summers during middle school.  Soon after, he was working on the roof with crews for both steep slope and flat roofs.  He gained first hand experience from peers in BUR, EPDM, PVC and Standing Seam roofing. 

    After Derek graduated high school, he attended WTC and graduated with a degree in Computer Office Specialist.  Quickly, he 

    implemented those skills to improve bidding efficiency for the company and started his career as an estimator.  

    Derek married his high school sweetheart soon after gaining his degree.  Together they have 5 beautiful children together.  

    After 50 incredible years in the roofing industry, Derek's father Charlie completed a succession plan with Derek and his brother in law Jon Kloehn.  

    As always, we wish Charlie and Shirley a fun and blessed retirement.

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    Jon Kloehn

    Vice President

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  • Keri Steinfeldt.jpg

    Keri Steinfeldt

    Human Resources

    Payroll, benefits administration and hiring. I have an Associates Degree in Supervisory Management.

    I have been with Interstate Roofing since 2016.

    In my off time I enjoy spending time with my family and my dogs.  We enjoy camping, fishing and cooking.

  • Bill Ulmen.jpg

    Bill Ulmen

    Project Superintendent

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    Chris Gerdes

    A/R & Job Cost

    With the exception of two years, Chris has been with Interstate Roofing since 1990.  She handles accounts receivable, inventory posting and job cost.  Chris has an Associate Degree in Accounting along with a Bachelor Degree of Business Administration.

    In her spare time, she enjoys walking with her dog, planting flowers and boating.

  • Mike Pamperin


    Michael is a full time Estimator.  His primary role consists of client relations, estimating, project management and drafting.  He has a civil engineering degree, along with extensive knowledge and experience utilizing software related to his profession.  In his free time, Michael enjoys spending time with his wife and tackling home improvement projects.

  • Nancy Swanson

    Controller/Corporate Secretary

    As the controller, I oversee the accounting process, prepare quarterly financial statements, information for the year-end review, documents for audits, governmental payroll reports, review jobs, and perform all accounts payable duties.

    I have been with Interstate Roofing since 1993.  I currently reside in Genoa.  My interests include fitness activities and remodeling homes.

  • AJ Eklov

    Administrative Assistant

    AJ Eklov joined the team in 2019 as the Administrative Assistant/Receptionist.  She has over 26 years of administrative and accounting background and earned her Associates Degree in Office Computer Specialist.  In her spare time, she looks forward to crafting and baking treats for the office staff and crews.

  • Justin Riley


    Justin has been with Interstate Roofing since the year 2000.  He estimates and manages commercial projects of all varying degrees of complexity. In his free time he likes, “spending time with my wife and 4 children, traveling, being outdoors, and almost anything sports.”

  • Clay Kirschbaum

    Service Department

    Commercial Roofing Service Department managing rook leaks, repairs, maintenance, warranty, work and dispatching service crews.

    On my off time I like spending time with family and friends.

© 2021 Interstate Roofing & Waterproofing, Inc | Website designed by Elevate Media Group

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