By almost any measure, Matt Mertz Plumbing Inc. in Wexford, Pa., is a successful business. What else can you say about a drain-cleaning and plumbing firm that generated more than $6 million in revenue in 2014, employs 29 people, runs 27 trucks and owns about $2 million worth of equipment, tools and vehicles?But even a thriving company can always use a new revenue stream, especially if it can leverage an existing customer base. And that’s exactly what owner Matt Mertz did almost three years ago when he started offering customers a new service: trenchless pipe relining.Mertz was already familiar with
