yes but not the other way around the latex passes moisture
There are some water based coatings that will adhere to an oil based surface without using a primer; however, an oil or acrylic-based primer, used as a bridge, will allow you to paint latex over an oil-base paint trouble free.
Any oil based chalky surface sealer should lock the calcimine down, providing a stable surface that will accept any latex ceiling paint.
If you have painted latex over oil based it will peel of very quickly.
No, you either need to really rough up the oil paint with fine sand paper, or put a base coat on before you paint with your Latex paint. If you don't your Latex paint won't adhere.
Acrylic latex paint is a good product, but sits on the surface and does not penetrate. Raw wood and previously oil-based painted surfaces must be primed first to assure adhesion.
Yes, oil based paint is very versatile and can be painted over many painted surfaces, including those previously coated with latex paint, as long as the surface is dull and clean.
Yes it can.
You should not need a sealer over latex paint. If you sealed the paint, it eliminates the breathing it is designed to have thus compromising the paint, and may cause it to peel together with the sealer.
There are some water based coatings that will adhere to an oil based surface without using a primer; however, an oil or acrylic-based primer, used as a bridge, will allow you to paint latex over an oil-base paint trouble free.
Any oil based chalky surface sealer should lock the calcimine down, providing a stable surface that will accept any latex ceiling paint.
Any paint and decorating store should have little pads (like wet-wipes) that you rub onto the painted surface. Whether or not the paint rubs off will tell you what kind of paint was originally used.
If you have painted latex over oil based it will peel of very quickly.
No, you either need to really rough up the oil paint with fine sand paper, or put a base coat on before you paint with your Latex paint. If you don't your Latex paint won't adhere.
Acrylic latex paint is a good product, but sits on the surface and does not penetrate. Raw wood and previously oil-based painted surfaces must be primed first to assure adhesion.
What a nightmare you just encountered, huh? The latex is going to want to peel, and keep peeling. Short of sanding all the paint off that you just applied you can apply a coat of shellac (primer/sealer by Binzer) directly over the peeling latex paint. It dries very quickly and has an awful smell but it will take care of the peeling paint problem. I bet you will never paint over oil again.
Hot water
yes