Our History

Family-owned & Operated Since 1987

In 1987, the founders of ICP—John Bisswurm, Sr., John L. Bisswurm, Mike Bisswurm, and Matt Graf saw the need for a new precast concrete resource for customers around the state.

With hard work and dedication, production operations started in a small building on their grandfather’s land, located in Mequon, WI. Using a small barrel mixer, they began producing concrete roof pavers and masonry units.  Their extensive knowledge of precast fabrication techniques, their commitment to quality, and their desire to become the experts in the industry laid the groundwork for growing International Concrete Products, Inc. into the company it is today.

Over 30 years later, ICP is an award-winning, multi-million dollar precast manufacturer whose work spans the country. Our success is largely attributed to our relationship-driven business model, as well as our hands-on problem solving approach.


  • Precast Panels
  • Sign Panels
  • Half-brick & Thin-brick Precast Panels
  • Custom Products


  • Exposed Aggregate
  • Simulated Granite
  • Granite
  • Simulated Limestone
  • Brick




ICP is a PCI certified producer of architectural precast concrete products.