Recent content by smokies

So apart from neighbours in the basement -not an option as detached house- no ideas???

We have on OSI 20RI hot water system and potterton boiler. Recently, there have been lots of "tapping noises" coming from, we thought,the attic, but when up there, nothing is heard. Last night, I turned on the cold tap and heard the noise, so turned it on and off a few times and the same...