how long

[triggermala]

Hi, I am thinking about using a bonding coat to level out a wall around a bath and will also be fitting a shower and tiling, what i would like to know is how long do i need to wait before i can skim over the bonding coat with multi finish, also i have read not to use bonding in the bathroom but would the way above be ok as i am limited to space to fit battens and backer boards, i may be able to get away with dot and dab mr boards and tanking. any help would be very grateful.

 

[leebo02]

HI MATE, it is best not to use bonding in wet areas , but if its tiled and grouted well the water should never get to the bonding and it should be ok,, you can skim over the bonding after a couple of hours,, the bonding should be hard when you press it with your finger and the bonding should be starting to change colour

 

[currymunster]

Depends what the wall is that you are bonding. If it is bare brick work then not bonding - should be hardwall or better still in bathroom sand and cement!.

Hardwall = medium to high suction (Bricks, Light blocks(Celcons and Thermalites)old render etc
Bonding = low suction (cast concrete, dense concrete blocks, Flexible stuff like cavity closers and eml, also old painted walls etc