What do you do if you paint latex over oil base paint?

My wife and daughter are paint my daughters room today. They finished the walls and painted the trim with a white latex paint. My wife mentioned that the latex trim paint just does not seem to coat very well. I remembered then that when we moved in 8 years ago, we had the interior of the house painted and that i believe they used a oil base white paint for the trim. What can we do now? Should we just paint on another coat? Will it start peeling off?

skeeter

 

"What can we do now?"
Pray!!

It's hard to get latex to stick to oil base enamel. Often it will be ok for awhile but when it gets knicked, it often starts to chip and sometimes peel. Another coat of paint won't help

Ideally you would attempt to remove all the latex from the oil base trim and either recoat with oil enamel or use a solvent based primer and then the latex enamel...... but that's a lot of work

 

Hi Skeeter!

Yeah...if it was a Glossier oil trim paint previously, AND if you didn't sand and prime it b4 you painted, you will have a BARELY adhering new paint film.

Will your new paint peel off...??
50/50...sorry!

>>> What exact Brand, series, & sheen is your new trim paint?

The BEST solution....
* As Marksr suggests, sand off your new trim paint.
* Make sure the older oil paint is well dulled. Get every molecule of sanding-dust off. Do a light wipe with paint-thinner too.
* Now a good Latex primer will hold well. I suggest Zinsser's 123, or C2-One primer. A smellier primer, BIN primer from Zinsser would do great too.
* Now you're ready to apply 2 full coats of your chosen top-quality Latex trim paint.

Faron