PR-03Check for cables and pipes before you drillCables and pipes can run almost anywhere in a wall, not just in the usual safe zones. Use a detector to scan each mark, but still treat the wall as if something is there — detectors can miss cables that are deep, in metal conduit, or otherwise hidden. Find your stopcock now (usually under the kitchen sink) and check it turns, so you can shut the water off fast if you hit a pipe. If you have any doubt at all, switch off the relevant circuit at the consumer unit before drilling.