TR-03Check for pipes and cables before you drillCables and pipes can run almost anywhere in a wall, not just in the 'safe zones' — a detector helps, but it can miss cables that are deep, boxed in metal conduit, or behind old metal lath fixings, so always drill as if something is there until you've proved otherwise. Find your stopcock now, 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 about what's behind a fixing point, isolate the circuit at the consumer unit before drilling, and don't start until you're confident.