De-Cal Mechanical is a full-service Union Mechanical Contracting firm typically employing over 400 full-time office and field personnel. Founded in 1992, De-Cal Mechanical is a privately-held corporation owned and managed by Andrew Calcaterra, President, and Randall DeBeul, VP. Over 100,000 sq. ft. of corporate offices, warehouses, and fabricating facilities. in Detroit, Youngstown and Pittsburgh serve the Michigan, Ohio, and Pennsylvania regions.