Backer board

[fiftypencehead]

Hi, new to the forum and need advise please. I will be using 600 x 600 porcelain tiles on the walls of my yet to be built shower enclosure. I need to put up one stud wall which I will board with aquapanel. There is another boarded and skimmed stud wall which I will over board with aquapanel. The remaining wall is dot and dabbed skimmed plaster board. What is the best way to fix the aquapanel to this wall? Do I just use screws and plugs? If so how many for a secure job? Thanks for your help.
Rob.

 

[Qwerty]

Welcome .... Is there any way of getting the d&d boards off?

 

[fiftypencehead]

Thanks for speedy responce. I was hoping to have as little mess as possible so leaving the wall intact is prefferable, I'm trying to get the job completed in a weekend and didn't realise the tiles were too heavy for the walls until today.

 

[DHTiling]

Fix the boards with tile adhesive and then when dry screw and plug..