Does a bathroom need to be plastered if I'm fully tiling?

[spada01]

It's all new plasterboard, so i gather I need to use moisture resistant board. It'll be flat already so do I need to plaster it or can I tile straight onto the board?

 

[Richard C]

Use MR PB & just tile straight onto it, no need for plaster it’s not necessary & will drastically restrict tile weight. MR PB must be primed if you have any untilled areas your going to plaster. If your fixing PB using dot & dab, you should provide additional mechanical fixing back into the walls or it could all end up on the floor.

I would advise you read the Tiling Sticky & Forum Archive posts before doing any more work or buying materials, it could prevent you making disastrous & potentially expensive mistakes. There are many things to catch you out particularly if you also intend tiling a suspended timber floor. It’s important to use only quality trade tilling materials of the correct type for your tiles & tile base; cheapo own brand & DIY stuff is mostly crap.

 

[NickB_99]

It's all new plasterboard, so i gather I need to use moisture resistant board.

Are you planning to put a shower in there ?

If so, MR board throughout may not be the best solution.

 

[Richard C]

Are you planning to put a shower in there ? If so, MR board throughout may not be the best solution.

Good point newbee, unusual of me not to pick up on that.

If you use PB in wet areas it should be tanked if you want it to last; a better solution is to use waterproof tile backer board & tile straight onto that.