Too much moisture in bathroom

!8 moths ago I had a section of a door frame in the bathroom in which the paint peeled and cracked. I sanded it down and used a primer Zinsser 123 then painted with a good latex paint. Now I need to do it again. I am going to use the primer Kilz Original Interior Primer which is oil based and then paint with same latex paint. Any suggestions on something else I should do? Could I put the primer on the paint as a sealer? Thanks!

Something in that area is not letting the paint stick. I dont know if its moisture though.

I thought latex wouldn’t stick to oil base paint. Or is it the other way around? Whichever way it is, I had a painter do it wrong on all the door trim in house.

If painting over oil with latex you need to sand the surface before painting.

or prime with Valspar stainblocking primer sealer. easier than sanding but cost a little more

Run the exhaust vent while taking a shower,

BP that is the problem, the fixture installed has heat and light but no exhaust fan. That is the next job.

A stop gap solution fir no venr fan, if you have an HVAC supply in bath, operate air hanler a few minutes with door ope to introduce smr dry air into bath.

I agree, door may have oil base primer or paint as a base coat. If so latex may never stick to it. In fact you probably need to srtip it.

Latex is fine over an oil based primer. Go to your Kelly Moore or Sherwin Williams and get them to recommend paint

Yes. No exhaust fan is a problem. Install one, then:
1) run fart fan while showering
2) make sure said fart fan duct is in fact exhausting
3) once done with shower, let fan run For 5-10 more minutes just in case
4) technically, should somehow wipe water off walls after each use, but nobody does

easy, take cold showers where it won't steam up the room ... fixed

and Bullfrog, we have a squidgy in our shower and wipe down the shower walls & door upon each use.