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Hi Boxster we had a pressurised system and then changed to a gravity system in the hope that that would solve the problem and to hell with the leak.....but that caused a lot of air to be sucked in. I do not understand what you meant in your last post though. I understand that you say by...

Aha.....but water would show too and there is no water showing! It's a puzzler.......I am beginning to think i should get the boiler and cylinder tested again in cas e plumber 1 was wrong or just said that he had tested it!........I cannot beleive that any tanking is that good! Ta Sean

Thanks for your idea Krispy........Unfortunately that will not show on the surface as the tanking is stopping the water from showing and would do the same with the dye. ....Or did you mean dig up anyway and use the dye to help spot the leak?.......if we have to dig up it has to be a good idea to...

Hi Chris :D One more question....How would we use the IR themometer, because the central heating pipes are going to show up heat anyway, and will also be heating up the concrete around them. The leak is going to be at the same temperature. Is your IR thermometer sensitive enough to be able...

Hi Boxster Thanks for your comment. Nope, we have looked everywhere and there are no signs of any damp patches. Guess we did a very good job on the floor waterproofing! Will let you know how this progresses. Regards Sean

Thanks Chris We are sure that this is a leak/problem somewhere in the system, and not in the pressure vessel, because we have removed the pressure vessel and gone back to a conventional header tank. We are not so much seeing the pressure loss or leakage now, but seeing ( and hearing ) an...

Thanks Chris I will try the infra red thermometer ...are they easy to find? We have tested the boiler and the cylinder and neither are leaking. No the upstairs pipes are not in concrete, and there are no signs of leaking on any of them. Is there a way to automatically top up the system...

Thanks Boxster, that was very good advice and if i cannot find any other solution, that is what i will do.....But it is a very expensive and un-attractive solution. The flat is absolutely immaculate and on 2 floors with 14 radiators. That is going to take a lot of boxing in and the tenant will...

I have a a Suprima boiler and i am having pressure loss problems. There are no signs of leakage on any of the surface pipework, yet we were loosing pressure ie. going below 1 bar in about 5 hours. This all happened out of the blue one day. We had not been doing any works to the flat, or to the...

I have a similar problem...Pressure loss. There are no signs of leakage on any of the surface pipework, yet we were loosing pressure ie. going below 1 bar in about 5 hours. This all happened out of the blue one day. We had not been doing any works to the flat, or to the system, so it is not a...