Backer board or plasterboard

[Super_Paulie]

Good evening my friends.

As the football is over and my working year comes to a close (university) it means I can get down to business so I'm ordering my supplies. 

 

My shower will be pressed against the only external wall in the room, it's currently back to brick so I was going to backer board that wall, the type with the foam core. I'll just MR board the rest of the room. The room is very small, any centimetre gained is a bonus. What are my options at the shower area, tile adhesive, foam directly to the wall followed by screws and washers? 

Cut my space loses, batten the wall out with 20mm deep battens and go against that? If so, insulation between said battens?

 

Sack off all of the above, MR pasteboard and tank? 

 

Opinions welcome.

 

Edited 10 hours ago by Super_Paulie

[JohnMo]

Never seen a need to tank a shower room and in my 60 plus years and never seen an issue. Only ever used moisture resistant plasterboard around the shower and normal elsewhere. Tiles direct to the plasterboard. If you foam the plasterboard on or batten and screw it's not going anywhere quickly.

[Russell griffiths]

Where’s the pipework, that might dictate what you do, are you going to chop into that wall or build a stud wall in front of it.