Master Mechanical Insulation Personnel
Mary Jo Pethke
PresidentMary Jo founded the company in 1990 and has 33 years experience in the industry.
Jeff Pethke
Vice-PresidentJeff has been with Master Mechanical Insulation since June of 1990. Prior to MMI he spent 18 years with Johns Manville Detroit Contracting Unit starting as superintendent and ending out as the Detroit unit manager.
Justin Pethke
Vice-PresidentJustin has been with the company for 18 years and is a graduate of Western Michigan University.
Rob Bergman
Operations ManagerRob comes from the field with 24 years of experience in the industry.
Tyler Salah
Estimator / Project ManagerTyler comes from the Pipe Fitter field with 6 years of experience.
John Simonian
SuperintendentJohn brings 20 years of field experience.
Evan Bergman
Material ManagerLaura Ball Carey
Office ManagerCall (248) 581-0033 or click for industrial insulation or HVAC services.