Frost damage to underfloor heating pipes.

[king of pipes]

there is one thing you could try get a 150m coil of 10 mm pex pipe disconnect one of the flow and returns from the manifold and feed the 10mm through the 16mm under floor loop apply a little lubrication ideal yellow 77 wire and cable pulling lubricant will help available from screwfix I cant guarantee it will work but worth a try tape the end of the 10mm pipe 16mm to 10mm adaptors are available best of luck kop

 

[Francis.]

You could be right, It's impossible for the pipe to split whilst encased in concrete.
I've found two leeks so far & both split where the pipe is in ducting between slabs.

What is the best repair, compression joints are easy, but what about reinstatement with concrete around them?

 

[snowhead]

What's the depth of cover over the pipework in the floor and has anything been screwed down to the floor and if so did the fixer(s) know there was U-Floor pipework?

 

[king of pipes]

Compression is what i have used in the past then wrapped with denso tape to protect from corrosion , it can be welded with electrofusion fittings but costly as you will need the equipment to do it ie hire cost ect , try what i suggested what you got to loose try it in the room with the expensive granite tiles the pipe is not dear you can always put it back if it fails but pretty sure it will work could save you alot of heartache bud .cheers kop

 

[Francis.]

Thanks King of pipes, your help has been top notch.
I had a fair idea of what to do but having someone with knowledge & experience for guidance has been a great help.
The screed is 100mm thick it also contains fibres & is about 70 Newton to breaking it up carefully without damaging pipes is proving hard work, but progress is being made & a problem is only a problem till it's fixed.
I replaced the roof with vaulted trusses over winter two years ago. I assumed that the floor was pretty much bomb proof ... any one else doing a similar project would be well advised to blow out all the circuits or add antifreeze.
Many thanks again..

 

[magicno1]

What a nightmare for you!
You can buy 16mm to 15mm adaptors that you use on a standard comp coupling. Most underfloor sites have them. I have some on board where are you?