Though I've yet to hear of an example, i'm sure there are places where local building codes may apply (so look into those first), but otherwise there's no real safety issues considering our elements are 24 volts...

Many people build showers where they heat the floor and walls with STEP Warmfloor, and we supply a company that wraps tubs with our elements.

There are a lot of nuances to the construction involved in some of these projects, so I try to inspire people to hire a professional (or 2, for example a carpenter and an electrician; they've got presents to buy this month...).

Of the utmost importance is that, in wet areas, our elements need to be on the dry side of the moisture barrier that's installed.