You will need this certificate to supervise or carry out plumbing, draining and / or gasfitting work without supervision as an employee or as a member of a partnership or director of a company holding a Contractor Licence.
Plumbing includes water plumbing, roof plumbing and works of sewerage. Water plumbing includes plumbing involved in a fire service such as a fire sprinkler system, urban irrigation, and water supply. Water supply includes any work on pipes and fitting in a building in which any part of a sewerage service is connected to a septic tank or effluent system.
Gasfitting includes work on a gas installation (other than an autogas installation) connected or intended to be connected to a compressed natural gas container.
LP gasfitting work is restricted to work on a gas installation designed to carry liquefied petroleum gas in vapour phase only at pressures not exceeding 150 kilopascals.