Dot & Dab - What do I do around the windows ?

[MadWelshWizard]

Hello,

I'm quite new to the forums but am in need of help.

I have decided to go with dot & dabbing (d&d) my bathroom this weekend and have read many useful, articles here on d&d.

However I am not sure what to do about the window ?

What do I use to join the exposed brickwork of the window up to the plasterboard on the walls and how do I handle the exterior corners ? Do I use more d&d plasterboard around the window and then use a metal mesh for the exterior corner ?

Any help on this would be greatly appreciated.

Thanks,

Craig

 

[Richard C]

I have decided to go with dot & dabbing (d&d) my bathroom this weekend and have read many useful, articles here on d&d.

Make sure you use moisture resistant PB in the bathroom & any surface in a wet area (next to the bath or in a shower cubicle) should really be tanked or use Aquapanel.

I am not sure what to do about the window ?
What do I use to join the exposed brickwork of the window up to the plasterboard on the walls and how do I handle the exterior corners ? Do I use more d&d plasterboard around the window and then use a metal mesh for the exterior corner ?

If it’s bare brickwork reveals, I tend to use 2 layers of plasterboard, one on top of the other but it depends how much space you have; I’m assuming the cavity is not exposed ? Just butt the edges of the PB at the external corners & fix thin angle plaster beading all around. I also use a stop bead against the window frame as it makes it easier to plaster up to the frame & gives a really nice straight edge.

 

[MadWelshWizard]

Heya Richard,

Thanks for the help.

I was going to use normal plasterboard for the whole room and tank around the shower area (2 walls) with a BAL WP1 Tanking kit. I've been told that with the waterproof adhesive and tiles/grout it should be waterproof enough, is this not the case ?

Craig

 

[Richard C]

The thing top remember is that most waterproof adhesive & grout is not impervious to water; water is still absorbed by it, it just doesn’t disintegrate in the process. So any water soaking through or getting in behind little cracks & flaws in the grout can reach the backer board & if that’s not water proof, it will decay & eventually disintegrate behind the tiles.