Tiling on a painted plasterboard. HELP

[Rich Midge]

Not been a Bal user for years so can't feel I can comment on their primer. If you do call Bal technical tomorrow I can't imagine they'd advise anything other than replace or overboard, which is realistically what a pro would/should do. As mentioned earlier, see how you get on taking the existing tiles off. Chances are they're pulling the board with them.

 

[Stavs tiles]

Just thinking guys and sorry to open this up. What would the scenario be with a painted wall not plasterboard.

Image getting the paint off and scraping/sanding down is just the better option with this as well....

 

[Rich Midge]

Yep, basically you need rid of paint, especially emulsion.

 

[LM]

BAL technical told me in the past to apply a piece of high quality sellotape to the wall and rub on firmly, leave it for ten minutes and then remove it, if the tape pulls the paint off then you can't tile on it, if not then it should be fine providing you don't exceed the weight limits for plasterboard.

 

[Rich Midge]

Didn't think the tape test applied to emulsion paint though Lee? Thought it was only to be used on gloss and the like. My understanding was that emulsion could start to break down when wetted so shouldn't really be tiled on.

 

[LM]

Well that's what they told me, personally I'd be over boarding or replacing the plaster board for all it would cost to do anyway.

 

[Rich Midge]

Same.

 

[Tile seller]

If the paint is well stuck and survives the 'tape test'(decent sticky tape used) and, doesn't rub off with a wet cloth, (which being used in a bathroom it shouldn't. Prime it with mapei Eco prim grip, wait for it to dry and tile away.

 

[Italy]

I remove the paint from the plasterboard, with sandpaper mounted on grinder, primer and posing. stop

 

[On one]

As it is a 3yr old new build the tile adhesive will probably ready mixed and will pop off easily enough.......likewise the walls will be dry lined, so I would reluctant to interfere with the integrity of the walls
It looks like you definately enough depth on the bath to overboard the walls with new PB if you didnt want to remove the PB around the bath