Compression fitting or alternative for old microbore pipe

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I have old microbore heating pipes buried into the concrete of my house. They are unfortunately 6mm or 8mm microbore (is the diameter measured as the internal cavity or external?)

One of the pipes feeding the radiator in our cloakroom has developed a weeping leak. I’ve attached a picture. I want to remove the right angle fitting and use a vertically straight one instead.


The pipe doesn’t look in great condition- but it is not practical to dig up and install new pipe either. There doesnt appear to be a lot of slack coming out the ground so I was thinking of fitting a compression fitting with PTFE tape on it.

What do you guys think? Should I get a plumber in to solder instead? Given the limited slack available, cutting it back is not an option and there is also the possibility that the pipe may be damaged from the current fitting.

Thanks
 

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I really think you'd do better to call a pro in.

Even for a pro the job could be tricky as so little pipe to play with, especially if the vertical nub has been bashed/ pipe bore crimped/olive misaligned/not fully inserted or otherwise out of true.

A pro would be able to neatly remove a section of floor covering and join to undamaged pipe in the screed layer (in the worst case scenario).

You might get away with LSX providing you drain fully (and that means down to floor level, below the height of the joint) and give it 24 hours to cure but it would be and remain an unreliable and unsightly bodge.
 
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the photo shows a 'butchered compression fitting with the copper pipe rotated' really best to get a pro in :idea:.
 
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