My 1st Job Hardiebacker confusion

[Rookery]

I'd dot n dab fresh plasterboard, then tank. Simples.

 

[Dan Fitchie]

Appreciate the responses, I think I'm going to return them. They are from b and q so should be fine.
I'm struggling to find any stockists nearby for marmox, wedi or jacko boards.
I know I can get nomoreply which can be dot and dabbed. If hardiebacker was going to need to be tanked anyway which again I didn't realise, can I just use moisture resistant plasterboard and tank that? Or is it not recommended for shower areas?

 

[Qwerty]

Save your money and use standard square edge plasterboard. If fixed and tanked correctly, you will have no issues

 

[Flintstone]

If space is limited for building out, you might as well stick with the hardie backer dot and dabbed as its 6mm thick and not 20mm like impish suggested. You can actually dot and dab with 12mm thick wedi type board tho.

 

[Dan Fitchie]

The

If space is limited for building out, you might as well stick with the hardie backer dot and dabbed as its 6mm thick and not 20mm like impish suggested. You can actually dot and dab with 12mm thick wedi type board tho.

The hardie I have is the 12mm one not 6mm

 

[Flintstone]

Ahh. I’m not too familiar with the hardie backer ways but no more ply you can dot and dab 6mm. I can’t see why hardie is any different

 

[One Day]

If space is limited for building out, you might as well stick with the hardie backer dot and dabbed as its 6mm thick and not 20mm like impish suggested. You can actually dot and dab with 12mm thick wedi type board tho.

20mm for spotting on walls. If you use thinner, there's zero come-back. Wedi, Delta, Jackon - all say 20mm
https://www.wedi.de/fileadmin/media...Building_boards_-_interior_GB_2015_SCREEN.pdf
(page 16)
As for 6mm cement board on walls... not for me thank you!

 

[Flintstone]

Not for me either. It’s the lowest build up way tho if he is tight for room.

My mistake, I’ve been overboarding a lot of stud work with 12mm boards recently. Although tilefix, where I get some stuff from suggest you can use 12mm dot and dab

Dry Lining With Marmox Multiboard - https://www.tilefixdirect.com/blog/2015/01/dry-lining-with-marmox-multiboard/

 

[One Day]

Ah, marmox is one manufacturer I've never used.
I know their coating is a little tougher than others, maybe it helps?

 

[Flintstone]

Maybe it does help, maybe there more confident to say 12mm is fine. 12mm is pretty rigid, I can’t imagine it causing any issues. I find the coatings can be quite inconsistent on various board manufacturers boards.