Leak in Pressurized Megaflow unvented heating system

[Phillippa]

Hi,

We have a leak in our system ( newly installed as have just done a loft conversion) and the plumber has so far established that the leak is from a pipe in the ground floor. It is highly likely to just be dripping onto the earth beneath our home and so was obviously not an issue with our old open system.

Our plumber has so far taken up the floor in our hall to work out where the t-junction between the kitchen and the sitting room is located. He will then try and establish whether the leak is under one room, the other, or both!

Anyway, I was just chatting with a friend this afternoon and she said they had just the same thing and their plumber put some special "liquid solution" into their system which stays as liquid up until it meets oxygen. Apparently it then solidifies and stops the leak. Does anyone know whether this is correct and what the name of this solution might be? Keen to know before more of our floor is ripped up and pipes closed off, re-routed etc. All looking like an extremely costly and time-consuming exercise which is rather a concern.

Any advice is greatly appreciated.

 

[kevplumb]

would you belive its called leak sealer View media item 26159

 

[Phillippa]

Thanks for this. Just read a few posts related to using this Leak Sealer and does rather sound as if we need to seal off existing pipework and replace around/behind skirting (as under concrete floor) and losing a lot of pressure just in a day! Looking expensive.

 

[Agile]

Whilst plumbers will sometimes try that, most boiler engineers would not trust it in a nice new boiler.

Its usually possible to isolate the feed to a particular floor to identify where a leak is.

Pressurising pipes burried in a concrete floor is VERY risky and most conscientious engineers will give the customer a stern warning of likely high additional costs.

Tony