to follow up from my previous question,all my pipework is that grey polypipe which all runs over my lounge cieling and the remainder runs round the rear of the kitchen with no signs of water marks.the pipe that runs to the outside of the house is also dry all valves dry
as we can't see the system can't advise any more.
yours is a sealed system and the only time them systems leak are, a problem in the boiler - which you have had tested
a leak in the pipework - which you can't find any
