Mould on bathroom ceiling :(

I work for timber and damp specialists and this matter frequently comes up after surveys. You need to use an antifungicidal treatment and follow the manufacturer's instructions, and also fit an extractor fan if there isn't one in the bathroom.

I work for timber and damp specialists and this matter frequently comes up after surveys. You need to use an antifungicidal treatment and follow the manufacturer's instructions, and also fit an extractor fan if there isn't one in the bathroom.

To avoid it happening again make sure you have electrical ventilation connected to the light switch (it usually continues for five minutes after the light is switched off) and natural ventilation via a trickle vent at the top of the window.

Please watch your eyes. Whenever I beach anything I always try not to get it in my eyes but invariably manage to do so. I always think to myself 'I should wear glasses to do this', and then don't [this happens to me a lot; I often say out loud 'why am I not doing/doing this, this is really silly' and then go ahead and do it]. Worrying .

The inhibitor paint has worked well in my shower room and it was done years ago. I cannot remember what the ceiling was washed down with first. The walls and floor are tiled.

I go for straight bleach. Works better than diluted bleach but you have to be careful because of the fumes.

Was going to look online but knew GNers would be speaking from experience

I think it's a cup of bleach to a gallon of water.

Thanks both; I'll try the weak bleach, and I agree about the anti-mould paint

What constituted the weak solution in, say, a half-bucket of hot water?

Yes paint that contains a mould inhibitor does work, I used it on our shower room ceiling a couple of years ago, first cleaned with diluted bleach, then applied 2 or 3 coats of the mould inhibitor paint.

There is lots of advice online.
We had a problem with water penetration on our daughter's flat which caused mould. We washed everything down with a mild solution of bleach and then bought special anti mould paint. I can't remember the name of it. Walls and ceiling now as good as new.

Emulsion paint ought to be OK if you wash it over with diluted bleach. Of course, you could end up having to do the whole ceiling when the mouldy bit is cleaner than the rest (this is my excuse for not washing the patch round the light switches)