Advice on moisture resistant plasterboard - TilersForums.com

[Dan17h]

Hi guys,

I'm in the process of redoing the bathroom. I've removed everything including tiles and found that the plaster is hollow and loose to the brick on 2 walls. So I'm gonna remove back to bare brick on these 2 walls, tank the plasterboard and attach to the walls.

I just wanted some advice on a few things I'm unsure about to avoid any future issues.

What length and type of screws would you recommend for attaching 25mm timber studs to the walls?

Does moisture resistant plasterboard only hold a certain weight of tile?

Any other usefull advice you guys could add would be much appreciated.

 

[WetSaw]

Why don't you just dot and dab plasterboard to the brickwork?

 

[Qwerty]

As above ^^

 

[Dan17h]

I thought it would be better for the tiles to be attached to a battened wall, from what I read it's more secure but I could he wrong.

I was planning to use pinkgrip dry fix foam on 1 of the boarded walls as this won't be tiled.

Even with the dot and dab method, dont they still need to be screwed threw the dabs with wedi washers?

I just can't find any info on what type and length of screw to use and also if any plugs are required for the screws.

 

[Spare Tool]

Only need mechanical fixings if dabbing onto skim or old plaster, straight onto brick doesn't need screws and washers and its by far the easiest method to get walls flat and plumb. If you fix battens and screw boards to those there only as true as your original wall which can sometimes be a back yard out.

 

[Dan17h]

Didn't know mechanical fixings were only needed when boarding on old plaster.

What I'll do then is check the walls are fairly level. If not I'll do dot and dab as it will be easier to get straight and level.

Any of you guys had any experience with Everbuild pinkgrip dry fix? And if it's ok to use as dot and dab for bathroom walls?

Also I read somewhere that dot and dab isn't recommended on external walls as they are prone to damp or condensation. Any truth to this?

 

[Spare Tool]

Knauf Multi-Purpose Gypsum Based Drywall Plasterboard Adhesive 25kg | Travis Perkins - https://www.google.co.uk/url?q=https://www.travisperkins.co.uk/Knauf-Multi-Purpose-Gypsum-Based-Drywall-Plasterboard-Adhesive-25kg/p/858293&sa=U&ved=0ahUKEwjZmpu8gqLcAhVkB8AKHUDTAboQFggeMAM&usg=AOvVaw3vmsRYIQ7F9t_RsWIy9TIw

 

[Spare Tool]

Use that and it'll be fine..

 

[Dan17h]

Thanks guys, with regards to prepping the walls for the adhesive. Would you recommend I apply pva to the bare brick walls because they are quite dusty or would you say just spray water.

 

[Spare Tool]

Soak the wall through with 3-1 SBR, leave it an hour and get dabbing