"Jo King" wrote in message
...
Fitting a shower want to hide the pipe behind plaster can I use
compression fittings or has it got to be soldered joints. or would plastic
flexi pipe connect to the original copper.
Thank you for any help.
In the couple of power showers I have fitted in various houses I have done:
both final run to valve in copper and final run in plastic, with elbow to
copper and into valve.. All chased into the wall.

According to one shower pump instructions, plastic is recommended as there
is less conducted noise in to the walls, though not noticed any difference.

Only joints I had in the wall were the last elbow to the valve, which in my
case were soldered on the bench or pushed together with plastic, thoroughly
inspected/tested before being buried in the wall.