Watching TV last night my wife asked if was it raining, I looked out of the window & said "No". She then said she could hear dripping water, so she turned the TV off & she listened, not worth me listening. She the said it's coming from upstairs, so I went upstairs to find hot water dripping from the landing ceiling, which confused me as for a moment I couldn't think why hot water would be up there, then it struck me, it had to be the pipes going to the shower. Ran back down to the kitchen to get a knife, luckily when I put the shower in 5-6 years ago I put isolator valves in the upstairs cupboard, so came back & turned them off before going into the loft. That stopped fresh water but there was a lot of water still up there, had to remove all the underlay & get towels in to mop everything up, some of it has even managed to find it's way down to the lounge, there was a dark stain last night which appears to have dried out this morning. Just about to go for a new joint, but why it has suddenly let go after 5-6 years is a mystery.