Tap isolation valves - Tile wall first?

[outmyway]

I'm fitting a wall mounted shower room sink to a stud wall.

Should I leave the copper exposed through the wall and then tile, before fitting exposed tap isolation valves?

Or should I fit valves first?
(Easier to pressure test pipework for leaks, but not so pretty?)

Any ideas on what sort of valve to use?

 

[holty]

depends how you want the tile finish to look like,personally i drill the holes and slot the tile over the pipe, yet our tiler cuts a neat slot out of the tile.why not use pushfit stop ends(speedfit) then you can pressure test the pipework, and can be taken off for tiling, then back on till you fit the sink with proper isolators.

 

[outmyway]

Thanks Holty ..

It seems with the 'trendy' valves like these
http://cgi.ebay.co.uk/Minmalist-Chr...trkparms=65:12|66:2|39:1|72:1683|293:1|294:50

Its almost impossible to fit after tiling if the compression joint is to be hidden ... but then is impossible to plasterboard and tile over neatly?

I cant seem to find any small chrome 90deg isolating valves....

 

[seco services]

fit your pipework and your 1/2" wallplate then tile etc then fit your isolation valves.

 

[outmyway]

So should I fit the wallplate so that the 1/2" end will be about flush with where the tiles will be (ie. leave enought spare deptth for plasterboard and tiles).

Isnt it a lottery screwing isolation valves into wall plates that they tighten up with the outlet in the required orientation?

Could I drill a 15mm hole through a noggin for the pipe and fit a compression isolation valve after tiling? (and not use a wallplate?)

 

[seco services]

So should I fit the wallplate so that the 1/2" end will be about flush with where the tiles will be (ie. leave enought spare deptth for plasterboard and tiles).

you got it

Isnt it a lottewy screwing isolation valves into wall plates that they tighten up with the outlet in the required orientation?

use enough ptfe and they'll screw in nice and tight and you can line them up and they won't move or leak

 

[outmyway]

Thanks seco services