Hi Guys, just checking to see if what i'm planning is sensible


we've got a double ended bow shaped bath to go in,
ex display model so the holes are already drilled for the taps along the long wall edge, pretty, but a p.i.t.a. / impossible if they need swapping

I do however want to put a thermostatic shower above the bath,
as it's doubled ended, the sensible place to me is above the taps so i stand in the middle of the bow.

the bath sits on the outside corner of the house, left and back of it on outside walls, the right edge butts up to the airing cupboard.

to put it above the bath, i'll either have to chase out a horizontal run (1 - 1.5m?) to the airing cupboard for the hot and cold feed,
or chase vertically to below the bath (0.5m?) and come out and accross under the bath.

can i do this without doing anything risky to the structure?
I don't know the permitted depths for chasing into walls,
it's a cavity wall, council built 1950's, not had any plaster off yet but presume its concrete blockwork for the inner skin / wall.

I do know that I need to cover the copper pipes in Denso tape or similar to stop the plaster eating through the pipe.

p.s. I have got a pipe bender so i'm aiming to do it without "hidden" joins other than at the wall mount elbows for the shower valve, iso' valves will go where they emerge in the airing cupboard

Cheers!
Matt

No links to lesser Diy forums please. Mod 2

No problem. You will be using 15mm pipes so chase away between 20-25mm will be ok.

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Cheers moggridgeplumbing,
sorry for the "read more" link, thats what i get for copying and pasting