John Kramer's Fabrications, Inc. warrants their shower bases made from DuPont CORIAN® for defects in material and fabrication for 10 years to the original purchaser. 
This warranty does not apply if:
  • Installation guidelines are not met
  • If base is to be used in a steam unit
  • Physical abuse
  • Natural disasters
  • Structural movement
  • Improper plumbing or plumbing materials
  • Improper installed surrounding walls and shower doors
This warranty does not cover labor to repair or replace any surrounding items if pan must be replaced.