Plastering over copper pipe

aetbaar

I have a new mixer shower and copper piping run in my bathroom wall and before it is plastered over I Understand it needs some insulation to stop the pipe corroding and also something that will allow it to expand with heat. I have read many things about using hairfelt lagging, foam lagging, ducting tape, electrical insulation tape, denso tape etc and there seems to be no one answer

What do I need to put around the pipe before plastering over it to stop any corrosion from the plaster and also to allow it to expand with heat- iw as thinking foam lagging but it is very thick and may stick out- would the hairfelt lagging be good enough and allow expansion

I am not keen on tape as I don’t think it will allow for expansion

Thanks in advance for any help

Stevefromdonny

If you're tiling the wall with fairly big tiles, I would just tile over the void if its only a pipes width. In reality, many pipes are just plastered straight over.

If it were me, I would have created a void behind the shower using studs. This would give you an area to better conceal your pipework instead of bashing your walls about.

southcoastrgi

Hot & cold pipes shouldn't be plastered over it's against the water regs, tiled over is fine but not plastered

Dave_J_3

as you are tiling over I probably would not bother either.

However if you really want to, expanding foam is a good solution