I am replacing the tiles in a shower cubicle, i think tiles are on ply, is it possible to strip the walls and retile on ply, ( yes or no ) cheers mike

it is possible yes but not advisable imo mike

i would replace the ply with plasterboard and tank it

ply can warp especially in shower areas

thought as much, i think the ply is 3/8, so would 9.5 plasterboard be ok and would it be possible ( not remove the shower tray)

As per Kilty and, in addition, the previous adhesive could easily have contaminated the ply such that it needs to be replaced regardless.

hi mike what tiles are you putting up

tiles to be chosen yet by customer but will be prob be 230 x300 ceramics so no weight issues, i have tanked before, so plasterboard and tank would be no problem, but the room has coving so i guess i will have to remove and replace, or are there any other options,

plasterboard and tank sounds fine to me for ceramics thats what i would do mike

standard plasterboard or green , which one, if tanking, if i recall standard should be ok but better check with you guys .

Standard if your tanking.

i thought it had to be 12.5 mm plasterboard?

is this right, can i not use 9.5mm plasterboard

hi mate
it should be 12.5mm plasterboard for walls..

cheers for the replys guys

It should be 9.5mm but i have mechanically fixed 9.5 in a cubicle to get over it, or you could use hardibacker cement boards (other cement boards are available)

Gypsum is pure trash in a wet area as gypsum is FOOD for MOLD.
Mold loves to eat it so if there is ever any water that gets to it there will be black mold.
Best bet is to use cement board or some of the foam board material available these days I think Marmox (?) is what you guys have over in the UK.
Both of those will not provide mold with a food source.
Even green plasterboard is not a good call for wet areas.(even though it is pushed by the industry)

thanks for replys

mike111, if it was me, I would be fitting a backer board of 12.5mm assuming it's stud work behind.

Hi. IMO Use cement backer board if you can, hardi or aquapanel.