Are you talking about an industrial steam cleaner or a domestic version such as Polti? A domestic unit produces steam under pressure (150 degrees at 5-7 bar). I suppose the only difference with a commercial unit will be the pressure of the steam and the continuous top-up facility. Probably worth working in a small section to see how you get on, and to see there are no adverse effects. Bear in mind, the steam throws debris everywhere when you're working, so you'll need gloves and probably eye protection.