Help!: Hardy backer 12mm. Is it possible to dot and dab using thickset adhesive?

[inspectapart]

Hi, I just need some help with fixing 12mm hardy boards. I have ixed the two walls that are studded using drywall screws....seems to be O/K so far. But I have to cover an old brick wall also. I took of the high spots and primed it using ULTRA PRIME FLEXIBLE adhesive DILUTED 3 TO 1. I WAS HOPING TO DOT AND DAB THE BOARDS ON WITH ULTRA PRO RAPID ADHESIVE. What do you think?
The wall is pretty uneven but plumb. 1/2" of dab would allow me to level up I think.
The alternative is to battern out and that would mean a lot of packing out the batterns to get it level.
Hope this makes sense.
Bob

[Sir Ramic]

Who is this Hary Backer ?

[inspectapart]

Sorry, Hardy Backer.
Bob

[Dave]

Hardibacker do not advise it..

You can use a marmox type board though and D&D that onto the walls with Adhesive, and then mechanical fix as well through where the dabs are.

[whitebeam]

What tiles are you fixing

[inspectapart]

If I use Marmox, Which adhesive should I use/ It would need to be a thickset type to get over th uneaveness of the wall

[inspectapart]

Haven`t picked the tiles yet but they will be Just ordinary 9mm wall tiles. No great weight to them.
Bob

[whitebeam]

Why not use plasterboard and tank it if it's within the shower area.

[inspectapart]

I thought backerboards would be easier...no plastering etc.

[Stewart]

I thought backerboards would be easier...no plastering etc.

If you use plasterboard, you do not need to plaster it. Just use the bare boards.

[inspectapart]

why no need to plaster? unless I tank it?

[aph257]

If you use plasterboard, you do not need to plaster it. Just use the bare boards.

d&d plasterboard then tile. done.

[simon1]

Why not use plasterboard and tank it if it's within the shower area.

Same as

Good surface to tile to

[inspectapart]

O/K, if its that easy why bother with backerboards at all??

[Bri]

I only use backerboards on floors. The good point of a backerboard is that it doesn't deform if it gets wet, tanked plasterboard will get you the same result.

[Dave]

Also backer boards hold a lot more weight.. if the choice is there then use backer boards IMO..

[Bri]

Also backer boards hold a lot more weight.. if the choice is there then use backer boards IMO..

Good point, my brain has been pickled by beer and stopped me remembering everything!

[inspectapart]

I`m totally confused now. I have been told that unplastered plasterboard is fine to tile over??! If that`s the case, why use backerboards at all for ordinary tiles? Also, I thought that water can get through the grout, and if so, this wouldn`t be a good idea would it? And why don`t hardi recomend dot & dab ? I could still screw and plug through the dabs for extra strength maybe?
I might just d&d plasterboard and tank it. I just removed all the old tiles from plasterboard and it wasn`t a pleasant experience. I ended up back at the studding.I thought that baackerboards might allow for easier removal of tiles next time??
Bob

[Bri]

How long do you expect/want the tiling to last before you change it again?

[inspectapart]

10 years!!! But that doesn`t answer my question. ,,,,,,,,, Can I dot and dab Hardi backerboards ??

[kilty55]

you can use either backerboards or you can use plasterboard and tank it either way its fine but hardi dont advise dot and dabbing the boards

[kilty55]

10 years!!! But that doesn`t answer my question. ,,,,,,,,, Can I dot and dab Hari bckerboards ??

no you cant dot and dab them

[devonmark]

You only need to tank the area where the water will go, no need to do the whole bathroom