Case Studies

The American Royal Uses New Technology for Void Filling, Concrete Lifting and Leveling

Kansas City Historic Landmark the American Royal saves millions by using new technology for void filling and concrete lifting and leveling.
About The Project
Contractor Foundation Pros
Project Location Kansas City, MO
Product Used Terrathane™ 24-003


  • The historic American Royal building in Kansas City was experience soil settlement due to the confluence of the Missouri and Kansas rivers causing soil erosion
  • The building was built on land which was an ancient channel for retreating glacial melt, containing material which supporting geology could shift and adjust.
  • The floor of Governor’s Exposition Hall began shifting back in 1980s and the only remedy was to fill the voids beneath it with asphalt, and eventually to apply asphalt over the slab for a level surface.


  • The American Royal chose to use the TerraThane™ 24-003 Polymer to voidfill and lift the slab to level
  • In place of mudjacking, the TerraThane™ was lighter, so not to overburden the soil, and took less time, less of a mess, and a smaller footprint to complete the project.


  • Filled all voids, some as large as 36”
  • Saved the client millions of dollars versus alternative methods
  • Brought the floors back to level
  • Minimized future settlement due to stabilized base soils
  • Minimized impact to the customer and their business

Project Gallery

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