Hardiebacker - TilersForums.com

[hmtiling]

Which when tanked comes right down.
No way a paint on system can take the full quota.
You would have to use a membrane such as Kerdi.

surprisingly some tanking kits say they don't alter the substrate's hanging weight. @Paul C. posted something about it a while back. i think ardex's one was one if memory serves.

 

[White Room]

I only put Hardie on walls (which is rarely) if the tiles are heavy.

 

[Alexb]

I only put Hardie on walls (which is rarely) if the tiles are heavy.

Thanks everybody for the comments, will stick with tanked plasterboard.

 

[One Day]

surprisingly some tanking kits say they don't alter the substrate's hanging weight. @Paul C. posted something about it a while back. i think ardex's one was one if memory serves.

I know - I remember the post but I am pretty confident I can "peel" ardex wp off hardibacker.
I'm a big fan of ardex wp but I can't believe the claim - sorry!

 

[Sean Kelly]

Does not need to be primed but I would advise you to wipe it down with a damp cloth just to wipe off dust. It will dry in a matter of seconds.

 

[Alexb]

Does not need to be primed but I would advise you to wipe it down with a damp cloth just to wipe off dust. It will dry in a matter of seconds.

Sean Kelly - do you mean does not need to be primed before tanking?

 

[Sean Kelly]

Sean Kelly - do you mean does not need to be primed before tanking?

No. I was just answering yr original question. It does not need to be primed.

When you say a wet area do you mean shower? Tanking is belt and braces. I personally would not tank Hardiebacker as long as you seal with scrim tape and adhesive. Also using silicone before and after tiling.

 

[Sean Kelly]

Alex you haven't told us what you are tiling. You might be better off using Marmox type boards.

 

[SJPurdy]

Alex you haven't told us what you are tiling. You might be better off using Marmox type boards.

Marmox, Wedi etc type boards for me on walls over the cement type boards (Hardie, No more ply, etc). They are so much lighter to transport and carry to the bathroom; cutting is much easier (sharp knife (old wood saw sometimes)); Waterproof and joints can be glued sealed (eg Wedi 610 board sealant/glue) to waterproof them so no need to prime or tank; they are also insulating.

 

[One Day]

Marmox, Wedi etc type boards for me on walls over the cement type boards (Hardie, No more ply, etc). They are so much lighter to transport and carry to the bathroom; cutting is much easier (sharp knife (old wood saw sometimes)); Waterproof and joints can be glued sealed (eg Wedi 610 board sealant/glue) to waterproof them so no need to prime or tank; they are also insulating.

Give this man a banana! He gets it!