Bathroom ceiling artex disaster, can anyone please help???

[Beavis@Useless]

Complete amateur here so please be kind. Bit of background, mould on bathroom (artexed) ceiling so used HG mould remover. Looked absolutely disgusting afterwards so decided to paint. Sugar-soaped whole ceiling, bits of the artex were coming away, managed to get as much off with a brush til it stopped. Have just been using a roller to paint the ceiling and a huge amount of the artexing over the bath has come away, it looks awful. Help!!! What on earth do I do?

 

[opps]

Photos will help.

If the roller (read: suction from the roller sleeve) was pulling the finish off, that would possibly suggest that the substrate was not properly sealed in the first place.

 

[Beavis@Useless]

Hi opps, thanks for the speedy reply. I have no idea what the substrate is sadly. Have attached some pictures here, it actually looks a lot worse than in the pics, a lot of bubbling, which I think those areas are going to come away too. Its only over the bath where I used the mould spray. The last picture is of the rest of the artexing, which is in tact

 

[opps]

It might be safer to brush the paint on.

Rollers, depending on the type, will lay off paint and expel the air in the roller, as you continue to roll they want to suck the air back in- sorry- far from a technical description... if the paint on the substrate is not properly adhered, when the wet roller rolls over it, the old paint will become softer because of the water in the new coat, it can activate the old paint and rip it off.

My gut instinct would be to suggest that you brush on a water based eggshell. Perhaps use thinned emulsion over the bits that have come away (or a water based primer if you have some).

Water based eggshell, if applied properly is fine for ceilings prone to high levels of steam, the water should drip off, but ultimately air flow is key- ie- reducing the moisture in the first place.

 

[Beavis@Useless]

So should I brush the rest of the bubbled/flaky bits off first before painting? They are ripe for coming off.

Then use a brush to paint on water based eggshell followed by a thinned emulsion over the dodgy bits? Once that has dried, should I then paint over the emulsion with the rest of the anti-mould paint that I’ve used on the rest of the ceiling? I am clueless, sorry. Sadly I have no windows in the bathroom, only an electric fan. Thanks for your help.

 

[Iwilldoit]

Actually I dont think that is artex - it looks like textured paint.