Chrome waste joining to compression plastic - in wall?

[ianwynneuk]

Hi all,
I am a good DIY plumber but do not no the terminology so please excuse me.

I am at the final stages of plumbing in our downstairs new bathroom now and have encountered a problem. We have a chrome bottle trap waste ont he sink and the chrome then goes into the wall. The chrome pipe is specific as it goes from about 25mm to 32mm so I cannot change it for another longer piece.
The issue is the waste terminates right in the middle of the wall it is going through and I know that you shouldn't have a plastic compression joint burined in a wall.
How should I get round this? Any ideas? I am tempted to simply join it in the wall and wrap in Denso tape and try to cut a 40mm pipe and wrap that round it for protection?

Does anyone know what the official way to do it is?

Thanks.

Ian

 

[Agile]

My limited exposure to chromed waste parts showed that they were in copper sizes.

If this is the case then it may be possible to connect to copper tube with a pushfit connector like Tectite.

Tony