In the past I have chased plastic pipes into a wall and plastered over
them - this was for a shower with concealed valve. All worked nicely.
However that was tiled, so I could not see is there was any plaster
cracking.

Can anyone who has chased in plastic pipes and covered them with
plaster, report if there was any visible plaster cracking later? I
notice the pipes do expand in length by a fair margin.


--
Cheers,

John.

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