Help with painting a bathroom

[Wing Commander]

Hi all,

I have recently painted a bathroom and I am now having problems with it. Some of the walls were smoothed down with plaster etc. Once completely smooth, I did a mist coat at approx 10% water, 90% paint. Once dry, I then painted the walls in 100% paint.

The paint is bathroom paint so is water resistant I guess.

The paint is now experiencing very fine cracks all over. As I understand it, this is because the wall is drying out, but isn't the mist coat meant to stop this?

And finally, how can I fix it? Don't mind repainting etc if necessary.

Thanks

[Fossilface]

How long did you leave the plaster to dry?
You should leave it for at least a week I believe, maybe even 2.

IMO sealing with water and paint doesn't work very well, particularly in a damp room like a bathroom.
I did this on the bathroom ceiling and had mould problems.
I redid it with Dulux plaster sealant and It hasn't happened again.

[Wing Commander]

OK so that might explain a few things!

Probably only left it a couple of days.

Now that there is paint on all the walls, what is the best approach? Obviously the paint has all these small cracks but it isn't flacking off anywhere. What is the best way to take it all off? Is that necessary or can I just seal over the top??

Thanks

[Fossilface]

TBH, I'm not sure.
When we bought our house, the plaster on the walls in our bathroom was all cracked.
What we did was to paper the walls with smooth backing paper and painted it with a bathroom emulsion and it has been fine. That was several years ago.
I think it was called DIY Doctor and it is like A4 paper.

[shirt]

i think i know what you mean - looks like it's old cracked paint rather than fresh?

tbh i don't know, my attic room went like this and that plaster is as old as the previous owners' renovations - mid 90s.

i solved it by using ronseal flexible undercoat before repainting.

[blaineuk]

What was on the Walls in the first place? my guess would be wall paper, and the problem you now have is the old paste trapped under the paint.

[J-Tuner]

If it was me i would probably rub the walls down lightly with sandpaper and paint it again in the same paint but go on thick with it....but i would leave it a good week or two first and really make sure the plaster has dried and contracted as much as it needs. If condensation/moisture is an issue i would allow even more time and get some fresh air in there after showers etc..