How do I find a leak on under floor CH pipes ?
Had a new boiler fitted two weeks ago.Prior to this the presure on the old comby boiler required topping up ever 7 to 10 days. This problem is still with us, the presure only drops when C/H is on. All valves and joints have been checked, but no evidence of a water leak can be found.
How can we dettermin where the leak is?
John Mercer, October 2009
