What plasterboard to use for travertine?

[robbieee]

Putting plasterboard up on studwork and i am unsure what plasterboard to use? The moisture resistant stuff? Its just a general bathroom with a bath/shower, extraction fan, toilet and basin.

I will be tiling directly onto the plasterboard, will i be better off with the tapered edge pasterboard then as i won't be skimming?

How should i prime the plasterboard aswell? Is this needed?

Sorry for all the questions!!

 

[Rookery]

I would use standard 12.5 sq edge plaster board but I would waterproof the wet area with a tanking kit such as Ardex WPC.

 

[robbieee]

Is square edge not for skimming though? Or could i get away with either tapered/square edge?

 

[White Room]

Square edge board is no problem, with MR boards only come in sheets of 8x4 sheets...standard boards are 6x3's.

 

[AliGage]

How good is your studwork? If its old stud it may have twisted over time as timber does. In which case taper edge is preferable as you can butt and fill to eliminate any lips.

 

[robbieee]

The studwork looks solid and fairly god shape (so far so good anyway, I still need to expose more of the studwork).

So would it be advisable to to fit MR boards? If so would it be the full room? Or is tanking standard plasterboard enough for the "wet" areas?

 

[AliGage]

Put a six foot level across the studs and check how true they are before you get your board.

Standard plasterboard is fine. Just tank the wet areas

 

[robbieee]

The bottom half already has plasterboard and the top half has lath and plaster. So i am pretty sure they are fine... will check though before buying lol

 

[SJPurdy]

check that the weight of your tiling (tiles + adhesive+grout) does not exceed 32kg/m2 on the (assumed correctly fitted) plasterboard. (I guess that is equivalent to trav of 10mm thick). The weight limit for the top half of your walls (lath and plaster) will be much less (plaster weight limit is 20 kg/m2 - assuming this even applies to lath and plaster!) and so unless you have thin trav. then I would recommend these are replaced with plasterboard (or better) if you want to tile them.

 

[robbieee]

Yeh that's what I am doing, replacing everything with 12.5mm plasterboard (all round, ceiling to floor). Lath and plaster + travertine don't mix lol

 

[thompsonbrown]

I would use moisture shield plaster board as it can take more weight than standard board.
I would also use a tanking kit for the shower area.
Check weight of tiles M2 before using any.

 

[JamesHardie]

HardieBacker is a great product to put in a wet area when tiling, and don't forget it will hold up to 100kg/sq meter. Its perfect for a job using heavy tiles.