Installing heating pipework in wall in plastic

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Hi just wondering if i can have some advice installing 10mm or 12mm plastic pipe is to serve a radiator in the living room.

I plan to channel the wall fairly deep and threading the 12mm pipes into this flexible pastic conduit with a coil of 12mm so there will be no joints in the wall as such.Use conduit clips to attach withing the wall and hopefully plaster accross.

http://cgi.ebay.co.uk/5-5m-Flexible...=39:1|66:2|65:1|240:1318&_trksid=p3286.c0.m14

Would this be a suitable method? There are concrete floors all downstairs and would rather not box the pipes if i can help it.

I plan to feed two radiators using the same method tapped from 15mm tails on the flow and returns off radiator in the above rooms,would a manifold be better or just easier?

Thanks any help appreciated
 
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Just run the 10mm pipe in the wall channel and plaster over it. If you have any joints in the wall, very unusual, tape over these first.
 
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cheers for the reply,shold i use standard barrier pipe or invest in some quad-pex barrier for under the plaster
 
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I've only ever used standard speedfit barrier pipe. The only problem you may get with pipes in plaster, is slight hairline cracking of the plaster due to expansion in the pipes.
 
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Give the pipes some room to move. Plastics expand quite a lot with heat.
If you use small diameter like 10mm (which is about 6.4mm id) it'll be (even) harder to balance with the upstairs rad.
 

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