"BigWallop" wrote in message
. uk...

"s--p--o--n--i--x" wrote in message
...
On Thu, 07 Jul 2005 12:52:00 GMT, "BigWallop"
wrote:


"Howard" wrote in message
...
I'm about to do this to the water feed to my electric shower, at the
mo
it
is coming down the wall and gets alot of condensation will that be a
problem
when buried in the wall?


Cold pipes are best boxed with an air gap if you can. Something like a
channel in the wall with a gap on either side to the plaster so they
don't
touch. Then cover with a sheet of plywood sunk in to keep the whole
surface
level again. An air gap around the pipe is best, but if that isn't
possible, then just burying and plastering over is the only other
alternative and doesn't do to much harm if tiled over really.

What about filling the channel with expanding foam, then filling with
plaster over the top? Would the insulation cure the condensation?

sponix

As long as the insulation doesn't allow the damp to creep to the plaster
surfaces, then yes, it probably would be OK. An air gap is the best
solution though, as the air flow can also help in allowing the
condensation
to escape by dissipation up, or down, the air channel around the pipework.


I understand it is best to avoid burying copper pipes in cement, as it
corrodes
the pipes. Plaster should be OK. Wrapping the pipe in Denso tape before
plastering might be a good idea too.

Andy.