building a false wall in bathroom

angelavdavis

Hi Andy,

How long has it been since you installed the shower this way? The reason I ask is that this is exactly how my shower was fitted - with an ext ply wall covering the pipes, etc on one side of the shower.

That was 7 years ago, I am now getting brown leaching from the ply into the grout which I am assuming is actually the glue seeping out of the ply now. It was great for 6 years.

andy69_2

To be honest I have only just done it about a week ago! But my friend who told me to do it said he has always done it (hes a joiner) and has never had a problem. suppose its how good the tiles are put on maybe? all i know is that its better than anything else. Imagine if you had plasterboard your tiles would be on the floor probably

andyhop

Plwood is not stable when wet

Use cement board if your flush or 12.5mm plasterboard and tank

No grout unless epoxy us water proof, no matter what it says on the packet

matt_boro

is cement board aquapanel?

or if i go with plasterboard, what sort of tanking membrane do i need?

thanks again for all the help

Matt

andy69_2

EXTERIOR plywood is great when wet mate, hence (exterior) trust me mate it works a treat and you can tile straight onto it

andyhop

matt_boro wrote: »

is cement board aquapanel?

or if i go with plasterboard, what sort of tanking membrane do i need?

thanks again for all the help

Matt

Either Aquapanel or hardibacker board

Membrane i would Homleux

Both available at the prices quoted from CTD

Plywood whether exterior grade or not could lead to failures,cement board or tanked plasterboard will not deform