Preparation for shower tiling

[Time's Ran Out]

As above but no tanking coat required just all corners+!
Cuts with a knife.
Light to handle.
Cost effective!

 

[Ollywest]

Thanks for the advice, much appreciated

 

[Mapei UK Marketing]

Hi all
I have a new build extension and the bathroom has been lined with green plasterboard then skimmed by the builder, looking for any advice on preparation for tiling a shower area? Seems it would have been better for it not to have been skimmed, can the plaster be tanked or primed, or overboarded with hardie-backer? Tiles will be 30 x 90cm ceramic.
Any advice welcome.

"We would advise that best practice would be to tank the plaster using a tanking system such as Mapei Aquadefense incorporating Mapei Mapeband. However the plaster must be finishing plaster and completely dry.

The maximum recommended weight limit for finishing plaster is 20kg/m², therefore to direct tile to this you wouldn’t want the weight of the intended tiles to exceed 16kg/m².

To install heavier tiles in this type of application it would be advisable to mechanically fix tile backer boards and tank these to receive the tile."

 

[Bill]

1) are you sure they are 30x90cm CERAMIC?

I have recently fixed 900x300 ceramics.....

 

[Time's Ran Out]

I have recently fixed 900x300 ceramics.....

View attachment 103520

Yes Porcelanosa and good quality when I’ve used them.
Was asking the question of the OP because of weight issues.