VB-03Check for cables and pipes before drillingRun a detector over each marked point, but do not trust it completely. Cables can run in unexpected places, and metal-backed plasterboard or deep cable runs can fool a cheap detector. Find your stopcock first, 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 at all, isolate the circuit at the consumer unit before you drill.