Locally Owned. Committed to Community.
Owner Erik Dieringer began his roofing career after graduating from Waukesha South High School in 1992. What started as Dieringer Roofing became Big Fish Contracting in 2001, expanding to meet homeowners’ growing needs beyond roofing.
Today, with nearly 30 years of experience, Big Fish Contracting is a trusted name in exterior and interior renovations across Waukesha and Milwaukee Counties.
Family Owned and Operated
Hiring a contractor means trusting a team to care for your home, communicate honestly, and deliver quality work.
For us, that responsibility is personal. We’ve built our lives in Lake Country. Our homes are here, our children are growing up here, and we serve families throughout the same community we call home.
If you’d like to get to know us better, our docuseries offers a behind-the-scenes look at who we are and what we stand for. And as always, we’re here to answer your questions and help you get started.
Meet the Dieringer Family
Married for almost three decades, Erik and Lindsay Dieringer have worked together to build a trustworthy contracting business, alongside a loving, caring family full of passion and creativity. Their four children, Amber, Alex, Hannah, and Lola, have all played a part in making Big Fish what it is today and have each worked in the business.
The Dieringers are a family dedicated to improving the industries they’re in, with a focus on building trust and stronger communities. While Big Fish Contracting has grown much larger than the family alone, the Dieringer family values continue to drive its growth and evolution.
Today, our team includes professionals at various stages of their careers, all dedicated to the same mission: redeeming an industry.
Meet Our Team
With nearly 30 years in roofing, siding, and home remodeling, Big Fish Contracting has earned a strong reputation across Southeastern Wisconsin, built largely through word of mouth and referrals.
Behind that reputation is a team committed to doing things the right way: clear communication, quality craftsmanship, and a job done right the first time.
Erik & Lindsay Dieringer
Owners
Tanya Weltzin
Office Manager
Samantha Yelk
Office Assistant
Kelsey Kasten
Remodel Project Manager
Ryan Weltzin
Remodel Project Manager
Nick Luce
Siding Project Manager
Jaime Rios
Siding Project Manager
Ryan Mallow
Repair Specialist
Josh Gillingham
Expediter
Rich Sa
Expediter
Levi Gillingham
Expediter
Kevin Kromm
Designer
Jay Kohlhaas
Designer
Amber Gerdes
Marketing Director
Lola Dieringer
Runner
Sales
Chad Whelan
Sales Representative
Paul Unferth
Sales Representative
Jason Sarchet
Sales Representative
Adam Rosploch
Sales Representative
Zack Davis
Sales Representative
Mark Hoppe
Sales Representative
Ryan Purcell
Sales Representative
Chris Franson
Sales Representative
Start a Career You’ll Love
Join the Big Fish Family
Carpenters
Wayne VanOoyen
Carpentry Team Lead
Tyler Vossekuil
Aaron Schwind
Steven Trampe
Shannon Ihlen
Jaden Beay
Brett Pofahl
About Our Roofing & Siding Crews
Our roofing and siding crews are made up of incredibly hard-working, dedicated, friendly professionals with years of experience in our industry. They’re amazing to watch in action and, more importantly, are full of love, joy, and have incredible work ethic!
They work as a tight unit to build, repair, and replace residential and commercial roofing and siding on time and within budget. With strict efficiency, cleanliness, and professionalism protocols, our crews uphold the highest quality standards to ensure a great experience from start to finish.
Listen to Our Podcast!
Under Construction: Renovating a Home, Redeeming an Industry
Are you a homeowner looking to tackle some DIY renovations, but you don’t know where to start? Maybe you’re looking for a contractor, but struggling to find the right person to hire? We’ve got the podcast content for you! Join Big Fish owner and founder, Erik Dieringer, and Tanya, our home project management expert as we share the ultimate guide to DIY renovations and finding the perfect contractor for your needs!
