I admit defeat!  I can't see how this can be done without ripping down the ceiling underneath.  But there must be a way surely but how?  Need to fit a pair of standpipe shrouds similar to these



What is foxing me is how you make the bottom connection (arrowed).  Options are:

1) Copper right angle and solder?  But the length of those elbows means it will hardly appear above the tiling. I'll be blasting a flame straight at the underlying ply supporting substrate...surely not a good idea.

2) Ditto compression join.  The elbow is going to be too short to stick above the tiles to get a spanner on.  Or are there special elbows with long legs designed for this?

3) Hep2O push-fit.....how to get support underneath the elbow to resist the downward pressure as you push the vertical pipe in.  Can't see how.

4) Remove ceiling in room below.

Not helped by SWMBO saying 'shouldn't we get someone in'....grrrrrrrr  

But to make them away requires a way of getting them in place before the tiling.

If you have 'difficulty' then I don't feel quite so bad!  Looks like it's ceiling off time.

Over on another forum, this has been suggested. 900mm long 22mm flexi tails although I am waiting to see if the compression nut will go through the shroud.

Or a short length of pipe (which will be part of the horizontal run) fitted to the pipe going through the shroud, feed that short bit through the hole in the floor and then where the standalone bath is going have a large oval hole and make the connections there.

I must be missing something. Can't you fit the bend and the length of vertical pipe (say 12") before you lay the floor?

Ah ok. What a pain.

We built a false wall and went for wall mounted taps and spout for our free standing bath.

I could but try telling SWMBO.  Anyway, I have the solution as suggested by JasonB over on UKW.

Had to smile when researching 'full-bore' 22 mm flexis.  They claim a 12mm internal diameter.  Full bore?   Yeah, right!