Master Mechanical Insulation Personnel

Mary Jo Pethke

President

Mary Jo founded the company in 1990 and has 27 years experience in the industry.


Jeff Pethke

Vice-President

Jeff has been with Master Mechanical Insulation since June of 1990. Prior to MMI he spent 47 years with Johns Manville Detroit Contracting Unit starting as superintendent and ending out as the unit manager.

Gerard Kulka

Estimating Manager

Gerard has been with the company for 25 years with 45 years experience in the industry.

Justin Pethke

Construction Manager

Justin is a recent graduate of Western Michigan University and joined the company in 2005.

Rob Bergman

Estimator / Project Manager

Rob came from the field with 18 years of experience.

Bill Dupart

Material Manager

Bill has been with the company for 27 years with 35 years in the industry.

Laura Ball Carey

Office Manager








Call (248) 581-0033 or click for industrial insulation or HVAC services.




Master Mechanical Insulation | Insulation Contractors, Troy, Michigan

Serving the entire state of Michigan, but primarily Southeastern Michigan including: Detroit, Warren, Sterling Heights, Lansing, Ann Arbor, Flint, Dearborn, Livonia, Clinton, Troy, Farmington Hills, Southfield, Rochester, Pontiac, Royal Oak, Saginaw, & Midland.