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Discuss Hardiebacker in the Canada Tile Advice area at TilersForums.com.
I thought it was waterproof, heard a lot about it. If that is the case, then it is better just to usetanked plasterboardIt's not waterproof. Absolutely pointless putting hb in a wet area. If you want it waterproof, you'll have to tank it now. Hb is mis-sold as suitable for wet areas. What it does is allow water to pass through to the background.
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.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.
Sean Kelly - do you mean does not need to be primed before tanking?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?
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.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.
i wouldn't trust it though and doesn't say it anywhere,that i can find, in their bumf.It wasn't the Hardi rep it was the NMP rep -I get them mixed up.
Insisted with their primer NMP is perfect for wetroom installations.
I've not used nmp but it's basically the same as Hardie, a cement board.It wasn't the Hardi rep it was the NMP rep -I get them mixed up.
Insisted with their primer NMP is perfect for wetroom installations.
I've not used nmp but it's basically the same as Hardie, a cement board.
There is no way that is deemed waterproof using their primer.
The only boards that are waterproof are the poly extruded ones ie marmox, wedi etc.
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