My mum moved recently into a development for elderly people with dementia and her house is empty. Just been talking to the insurer who told me that for the policy to be valid we have to turn the water off at the stopcock, and drain the tank (?!). We have a lot of clearing and cleaning to do and will need to make tea, use the bathroom, mop floors etc. Is there really any need to drain the tank to nothing, won't that be the biggest faff if we do need water? I could understand if we were putting heating on or something, but we won't be doing that for a while.