KS-04Check for cables and pipes before you drillCables and pipes can run almost anywhere, not just in the usual safe zones, so sweep a detector over every mark before you drill and still treat the area as live. Detectors can miss cables that are deep, in metal conduit, or behind metal-backed plasterboard, and a metal stud frame can confuse a cheap detector further. Find your stopcock, usually under the kitchen sink, and check it turns freely so you can shut the water off fast if you hit a pipe. If you have any doubt, isolate the circuit at the consumer unit before drilling, and turn off the water at the stopcock before cutting into anything that could carry water.