Can you plaster over copper pipe without protecting the pipe? ?

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I am have a new bath and shower installed..

As part of the work the fitter has chased the wall (masonry) in order to embed the pipe

He has bonded over the pipe.

However I am almost certain that the pipe was not protected and i wanted to know whether I am running the risk of the pipe potentially corroding and leaking?

Or will it be fine?

If there is a risk, will it possible to chase out the bonding plaster from around the pipe? If so, what technique would be advised in order to avoid damaging the pipe. I have chisels and and sds
 

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Some plasters are copper friendly, but if the bonding plaster used has either cement or lime in its make up, it will eat through the copper
 
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Thanks guys.. Thats a huge weight lifted over my shoulders :D

However if i am ever to get my bathroom redone i will insist on protecting the pipe with either plastic or denso tape
 

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