Went to change a tap-washer on the hot bath tap for a friend - the hot water is supplied from a combi - so shut-off the cold supply into the boiler.
However, the water kept pouring out of the hot tap - left it running for almost an hour - so pretty sure it wasn't coming from the boiler.
Ended up changing the washer with the water pouring out anyway - it was a mixer angled at90 degrees - so the water just pumped into the bath when the valve was removed,
Any idea why the water didn't stop when I cut off the mains supply to the combi?
Thanks, Mark.