Lady in distress here not getting sleep. There is a noise a bit like a finger rubbing a wet glass outside where the gas meter sits by the garage wall. The noise happens when the hot taps are turned on inside house. I also suspect that the similar but muffled noise 24 hours a day in the house is something to do with this? Can anyone advise as I am losing sleep..the noise is continuous muffled 50s alarm clock noise 24 hours a day yet the boiler is not always on and the boiler makes no obvious noise at all. The outside noise which is harsher and louder is in the copper pipe outside coming out of the meter and the down drainpipe is just above magnifying the noise like a trumpet outside! I think this could be travelling all across the newbuild house through the walls. Can anyone advise please. The boiler is in the garage and is a state of the art Glow Worm and 3 years old..recently serviced.