Cement board and plastic sheeting in this highly convenient inexpensive and popular application a moisture barrier of 4 or 6 mil thick plastic is installed directly over the wall studs.
Tiling onto plasterboard in shower.
It should be a minimum 12 5mm thick when fixed to timber framing or battening and fixed in accordance with the manufacturers recommendations.
Knauf aqua panel is one product that can be used.
I m also fairly sure that pva should go nowhere near tiled walls in wet areas.
If you want to update your kitchen or bathroom walls with tiles you don t have to remove existing painted drywall to do so.
Another suitable board would be the knauf aquapanel plasterboard usually around 26 for a 2400 x 900 size board.
Then the cement board is installed on top of the plastic sheeting.
The tile does add a layer of waterproofing protection but the real heart of the system is in the wedi board behind the tile.
You can rough up.
The board can be procured from diy stores e g.
The answer is very much dependent on wether you are are applying board and tiling in a wet area e g shower enclosure or around a bath with a shower over.
It is a cement based board so resistant to wet moisture.
Afaik there s a weight limit for tiles directly onto plasterboard 32kg m2 i think which is better than skimmed plasterboard but imo if its anywhere near a wet zone you should use a more suitable cement board like hardibacker board.
There are several acceptable applications of cement board in the shower.
Any moisture that escapes behind the tiling in time will break down the plasterboard and potentially cause the tiles to work loose.
Tiles are ideal for showers bathtubs and backsplashes.