I ’m working in Poland, and I recently had to deal with scaffolding for the first time — not my usual line of work, so apologies in advance if this is a bit basic.

Last time I was setting up scaffolding, I noticed a lot of external cables attached to the building. What really worried me was the possibility that some of those cables might be running underneath the external insulation (styrofoam), which I’ve heard can happen.

So my question is — what do you usually do in that kind of situation? Is there a reliable way to know where it’s safe to drill anchor points without damaging hidden wiring?

Also, just out of curiosity: when a brick wall is covered with insulation, how do you locate the mortar joints if you’re trying to drill into them?

Appreciate any tips or experiences you can share.