Extending and embedding mains pipes in wall

[Gorners]

As part of a bathroom refit I’m doing myself, I need to move hot/cold water pipes from coming out of the floor behind the sink pedestal, to being coming out of the wall about 18 inches up due to us installing a floating vanity unit so the pipes aren’t visible below.

Pipes are 10mm plastic microbore and the wall
is plastered breeze block once I remove existing tiles. I’m comfortable chiselling the wall out at a good depth for the pipes, but I don’t think I have enough slack on existing pipes so need to extend slightly. What fittings should I use under the floor - I assumed 10mm compression? And also do I need to add any capping protection to the pipes in the wall before making good?

 

[denso13]

They really shouldn't be embedded, what will the wall finish be, tiles or just plastered?

 

[Gorners]

I would be plastering and then tiles over the top. The pipes are embedded exactly like this in my other bathroom however it was done when originally built. Why should they not be embedded this seems a common occurrence?

 

[denso13]

Why should they not be embedded this seems a common occurrence?

Contrary to the water regs. They should be accessible.

Leave them loose in the wall, don't make good, just tile over.

 

[Gorners]

Thanks good idea. Compression under the floor?

 

[denso13]

Compression under the floor?

Again, depends how accessible, I wouldn't really want compression fittings under, say, a tiled floor, but it should be ok.

 

[Gorners]

I suspect I have enough length on existing piping to put the join in the wall void I am leaving exposed, so that will work. Thanks a lot great advice.