Pressure loss

[Drippybrain]

Have been losing pressure from a pressurised system . The boiler is a potterton he plus and has been tested with a new PRV and have checked the condense line ok. The system is at least 40 years old with new rads and trvs.
Have had mention of using gas pressure testing to indicate where the leak might be in a concrete floor are there any expert companies or what is my next step to find the leak. The system now needs filling daily

 

[larrytheleak]

drippybrain
ideally you need to isolate pipework in concrete and connect proper pipe test kit pressurise to minimum 4 bar and then you will have a definite answer as to what is occuring
on new pipework i usally pressurise to 6 bar for 10 mins usually tells where the carpenter has used pipes to fix his boards