Painting bathroom with lots of moisture?

DK75

I year ago I removed wallpaper from a bathroom and primed and painted afterwards. Over the last few months the paint began cracking and eventually peeling off the wall. It is time to regroup and re-paint the bathroom. Any suggestions on what paint or primer to use for a bathroom that does not have an exhaust fan?

After I scrape all the peeled and chip paint off the walls, should I sand the edges, apply some spackle???

Any advice on preparation, priming, painting is greatly appreciate.

MinConst

First you need to get an exhaust fan in there. After that prep as you said, prime and paint with a quality paint. Sherwin Williams has a Bath paint for you guessed it Bathrooms. But you need to remove the moisture from the room or you will be doing this forever.

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slickshift

Scrape all the loose stuff off
Sand the whole room
If you have uneven levels of paint from the scraping, feather sand them or skim some joint compound over them if needed
Sand to smooth out as good as possible

Paint with Zinsser's Perma-White
It can be tinted pastels and light colors if you want, but not full or deep colors
I'd recommend the satin sheen off-hand, but the eggshell seems to be just as good if you want it flatter

The Z's P-W will need no primer with proper prep
If you have good sized spots of joint compound you should "spot prime" them with the P-W before your actual coat goes on
Feather sand the edges of those spots if needed (probably not)

Then apply coat one
Let dry
Apply coat two
Let dry

The longer you wait to use the shower after application, the better
It'll dry to re-coat in about 2 hrs @ 70* (The warmer the better once it's up)
I'd recommend trying to do both coats in one day if the room is small enough to do so
Then don't use the shower till the next day

I'd also recommend getting an exhaust fan in there if possible

Although I am a profesional painter, I have a personal experience with a situation like this
I lived in a rented 1800s house on the corner on a river and the ocean, with my small family of two women, one a teen, who loved long hot showers in the tiny, tiny, bathroom
Also, the washing machine was in there
And no fan
Nor could I put one in
Talk about paint peel

Needless to say I was X-14ing (mildecide) it every four to six weeks
If I let it go for 8 weeks it was a bio-hazzard

After the Perma-White I never had to X-14 it again
I didn't see a peel for over two years after that