Lisenby says that if a certified plumber comes to your home, ask them for their journeyman license card. "Ask them for their journeyman license card. Make sure it's not expired. Just make sure ...
The Maryland Board of Plumbing, part of the state's Labor Department, calls the shots. They offer three types of licenses: Apprentice, Journeyman, and Master Plumber/Gasfitter. Each step up the ...