ive noticed a leak coming from my combi boiler...could it be the pipes that go into the boiler or does someone think it maybe the overflow pipe water backing up..have noticed the pipe that goes outside into the gutter is frozen at the bottom and frozen into the gutter where the water has collected..thanks

mark p, December 2010

most likile the out side pipe backing up put the kettel on and pour the water over the pipe to deice it be for the boile switches off

erj, December 2010