Getting conflicting advice from plumbers and internet regarding whether it's better to use copper pipe or barrier pipe in a lime plaster chase. Anyone have any experience or recommendations? Many thanks
I'd favour sleeved copper pipe. 15mm copper is a nice sliding fit in 20mm plastic conduit. Just don't use fittings buried in the wall, make sure you clean off & neutralise flux. Also worth using a 25/35mm single back box where the pipe comes out of the wall - Gives you easy access to solder the final fitting on, and a blanking plate will finish it off neatly.
