PhilHantsUK wrote:


I had a microbore based central heating fitted a few years ago, several
of the pipes are on the surface

I now want to bury the pipes in the wall but know that there are
problems putting copper and cement / plaster together.

Cu will corrode in cement, but I don't think there's any such problem with
plaster.

How should these pipes be coated or wrapped to stop problems

However the expansion and contraction might make the plaster crack so I'd
wrap them in something - maybe the sort of foamy silvery stuff sold to put
behind radiators.