Am confused by so much conflicting advice info about what needs to be done first to tile onto moisture resistant plasterboard.
Completely refitting bathroom. Internal partition walls are new moisture resistant plasterboard (being replacements for ruined old stramut strawboard walls)
Can i tile straight onto these, or do I need to apply pva first etc.
Thanks

NO pva....just use a flexible cement based adhesive..

Thanks for such a quick reply. Great, one less thing to do. I bought my tiles and adhesive some time ago - Mapei Mapegrip D2 - will this be ok?

personally i don't use tubbed gear....but d2 should be fine..what size tile is it and type of tile..?

just a ceramic 25 x 33, and a small amount of glass mosaics to do some borders with ( i have the white adhesive for fixing these)

champs.....please post pics...

Dave, what reasonably priced brand of Pbd and tile adhesive do you recommend? I've used the green board before for semi-external job (its a tad heavier than normal pbd) Is it ok to tile straight onto green board not pva'd in a shower cubicle? cheers!

I wouldn't use PVA..

Green board is fine to tile to but i prefer a flexi cement based adhesive.. something like Mapei keraflex maxi or Mapei keraquick etc etc..

Thanx dave!

I'm dot-dabbin an old bathroom with green boards all the way. No Pva prior to tiling, and I'll go for your cement-based adhesive, pref not pre-mixt!

Originally Posted by Dhimmiwit

Thanx dave!

I'm dot-dabbin an old bathroom with green boards all the way. No Pva prior to tiling, and I'll go for your cement-based adhesive, pref not pre-mixt!

I've only ever seen green boards screwed to a frame work, think your'll find it's not reccomended to dot and dab

Originally Posted by Dhimmiwit

Thanx dave!

I'm dot-dabbin an old bathroom with green boards all the way. No Pva prior to tiling, and I'll go for your cement-based adhesive, pref not pre-mixt!

Never seen green boards being reccomended to not dot dab. Can you post links whitebeam that don't recommend dot dab on the base coat ?

what area of the bathroom are you laying the tiles

Hi Jay,

The whole area- shower cubicle, round bath, sink, floor to ceiling everywhere. I hope I can dot and dab them as its tight for space as it is, its an old cottage.

I've been web browsing and can't find anything telling me I can or can't dot dab. I hope I can dot dab as nothing else is really practical. Even if its not recommended, I think I'll risk it and will advise the client.

wouldnt use tubbed stuff in wet areas best to mechanically fix plaster due to weight of tiles

Originally Posted by Dhimmiwit

Hi Jay,

The whole area- shower cubicle, round bath, sink, floor to ceiling everywhere. I hope I can dot and dab them as its tight for space as it is, its an old cottage.

I've been web browsing and can't find anything telling me I can or can't dot dab. I hope I can dot dab as nothing else is really practical. Even if its not recommended, I think I'll risk it and will advise the client.

Checked with British Gypsum and they say it's fine to dot and dab moisture boards, never seen it done before only screwed to studs