Plasterboard for bathroom

Steve

I am going to renovate an ensuite which is fully tiled at the moment. All tiles are coming off and after the last experience I had, I'm going to take down plasterboard + tiles in one go and re-slab. The last time I spent days getting all the old cement off and re-filling all the holes where the slab broke.

My question is this: can I get away with using the moisture-proof board in the wet areas (around shower) and normal board elsewhere.

Reason I'm asking is I already have slabs of each - just not enough MPB to do the full room.

Also is there any treatment required for the MPB - is the normal scrim and joint filler OK.

I will be full tiling the shower and half tiling the rest.

Appreciate any advice.

knighted

http://www.waterproofingshowers.com/

might come in handy for reference or ideas

byte

knighted wrote:

http://www.waterproofingshowers.com/

might come in handy for reference or ideas

How much would that BAL WP1 kit cost? I haven't seen it in any DIY stores I've been in, unless it's hidden somewhere.

I'll have 3 showers to tile in the coming months, I presume this stuff is a reasonable alternative to removing all plasterboard and replacing with MPB?

hjsimpson

Use the green moisture resistant boards any where u are tiling and the other board where u are plastering/painting.
Just tile directly onto the moisture slab, no problem.

311

We use a product called Classi Seal ,for baths and showers.
It's expensive ,but your shower tray or bath won't leak if you use it.
http://www.classic-marble.com/classi-seal.php

Any joining in the plasterboard or mpb ,we use silicone.

hiscan

just use the ordinary slab where you arent tiling

McSandwich

I had a similar problem to yours. I replaced the plasterboard with 90mm marine ply before tiling (using suitable adhesive and grout). No problems 2 years later.

milmo

McSandwich,

I've just used marine ply in my ensuite walls.

Do I need to put a skim coat of plaster on the ply before tiling on them or will I get the tiler to tile directly on to the timber??

Thanks

Milmo

Steve

Thanks for all the tips guys.

I'll use the MPB for the 2 walls in the shower corner and the normal slab for the rest.

I plan to tile with the Evo Stik flexi - expensive but hasn't let me down yet!

Any tips for the inside corner in the shower:

Was going to tape and fill the slabs with joint filler. After tiling, grout the join with (think it's called "fix-all") PU based compound.

_Brian_, that stuff looks good, do you buy it in the UK or is there a source here?

ircoha

McSandwich wrote:

I had a similar problem to yours. I replaced the plasterboard with 90mm marine ply before tiling (using suitable adhesive and grout). No problems 2 years later.

If you used 90mm, not surprised u have no problems:)