Out Of Interest On Some Background Prep - Tile Advice

[linton1990]

People have so many different ways of doing things now, it becomes very confusing on what is actually the best way!!. So i thought id see what different ways you would all deal with the following situation.

So . . . . you rip out all the tiles in a customers bathroom, the existing render/plaster is shot and comes away back to the brick. How would you treat a 9" solid external wall in a bathroom before tiling??

 

[magga]

Personally, I would batten the walls, fix hardiebacker and then tile on top with tanking in the wet areas. I know a lot of people would dot and dab MR plasterboard, tank the wet areas and the tile. It comes down to personal preference really, although plasterboard is much easier to work with than Hardiebacker.

 

[One Day]

I've very recently had to face this and i fixed 20mm wedi board using spots of adhesive, backed up by a few anchors through the spots. If anyone can think of a faster, better alternative I'd be impressed.

 

[Dougs Third Go]

I'd be asking why it's a 9" solid wall, seems strange not having a cavity.

 

[Old Mod]

I'd be asking why it's a 9" solid wall, seems strange not having a cavity.

I got such a wall too Doug!
I dunno....don't ask me! Haha

 

[jimthetiler]

could be a party wall.

 

[Dougs Third Go]

could be a party wall.

OP says it's an external wall though

 

[Old Mod]

OP says it's an external wall though

Yep, mines an outside wall too Doug.
I've now got 90mm Lambdatherm expanded polystyrene fixed to it outside covered with a silica/render coat over the top.
We had a damp issue before it was fitted, even with an injected damp course 1.2m up the wall. Seems to be receding now, thank heavens.
Must have been drawing moisture straight thro from outside I assume.
Praps that's something to consider when prepping this external wall.
I don't know a lot about damp tho, need to swat up I reckon.
Unless someone can educate me please?
Short version tho!

 

[Just Rizzle]

sounds like a house built over 100 yrs ago if that's the case I would mechanically fix 50 mm wedi so as to give a bit of insulation between walls and tiles did ahouse exactly like that just befor x mas
from been a cold room now is thermally insulated and warm

 

[Flintstone]

Most people would dot and dab plasterboard on I'm sure, although not the best way, probably the cheapest

 

[linton1990]

I thought plasterboard would be a popular choice. My concern would be on a half tiled bathroom. Would the dabs cause some sort of thermal bridging and create cold spots where the dabs are, which could in the long run create damp patches on the board.

 

[White Room]

I thought plasterboard would be a popular choice. My concern would be on a half tiled bathroom. Would the dabs cause some sort of thermal bridging and create cold spots where the dabs are, which could in the long run create damp patches on the board.

Any gaps or opening should be sealed off to isolate on an external wall....stops any cold bridging.