Boiler losing pressure

[Lagoonablue]

I know there is a recent thread on this but can't find it. There is obviously a leak somewhere as no water on PRV outside. Trouble is whole of downstairs is laminate flooring ( we didn't fit it, was in when we moved on Jan ). I can't even begin to think how much messing about there will be to search out a leak under floors. There is no obvious leak anywhere visible so must be below, if is one.

I have heard of companies who do an infra red search for leaks. Anyone know about this. Am guessing lots of money!.

Really don't know where to start with this. We have boiler cover with British Gas so suppose get them first to see.

Help!

infra red works on leaks on concrete floors. If yours is wooden under the laminate, start by looking for water marks on the visible radiator pipes, and sniffing the holes where the pipes go under the floor.

If any part has recently been altered or extended then it is suspect.

There can also be a leak internal to the boiler. Does the pressure alter when you turn taps on and off, especially to run a bath? Does the gauge ever go up?

Thanks. There is an extension but no radiator runs in there though the hot water pipe does. I have looked and looked but just can't see or smell anything. If there is a leak it must be well away from sight and smell.

Don't think the pressure goes up when taps go on. Will have a look. Shoukd it?

Thanks.

We had something like this recently. Ours was under concrete, so not the same, but there were no visible signs at all. We were very fortunate that we had heard something odd when trying to top up the system. When the plumber heard it, he said that was the leak, and indeed it was. So as well as looking and smelling, perhaps listen out to see if you can hear anything different from normal.

Get someone out to look at your boiler. We had the same thing with our boiler and we had an air leak in the expansion vessel, which can eaisly be replaced. There maybe a pipe the other side of the boiler on the outside wall. If this is leaking when boiler is on, then it's a sign something is wrong with the boiler rather than the pipework.