The two types of paint are not compatible, and if you try to apply oil paint over a latex base, you can expect issues like cracking and peeling. So, it's best to avoid using oil-based paint over latex. On the other hand, you can use latex paint over oil-based primer, but proper preparation is essential.
The most common issues when painting oil over latex (and vice versa) include peeling, blistering, and an overall poor finish.
Oil-based primers and paints have been an industry standard for decades. These primers work with both oil paints and latex paints, making them very versatile and applicable to a wide variety of surfaces.
There's absolutely no reason why you can't put a water-based acrylic paint on to of an oil-based primer. It hiss hold up perfectly well and the layers won't bleed into one another.
In order for your new paint to form a good bond with the existing paint, it's important that the two paints are compatible. Don't apply oil-based paint over latex; but you can put latex paint over oil-based, as long as you prepare the surface properly first.
An oil-based primer will readily cover and adhere to a latex under-layer. The problem however might be in how well the latex layer has bonded to the surface upon which it is painted. If that is not strong enough or it is already separating, or beginning to, both latex and oil paint will chip off.
If you have various stains, shellac Bonding primer is the ideal choice. It can be used to cover rough surfaces and old varnish as well as metal and ceramic.
Most acrylic and oil-based primers will accept both acrylic and oil-based top coats. For example, acrylic paints can be used over oil-based primers. If your project surface has an existing oil-based top coat and you would like to repaint it, either use another oil-based top coat, or the appropriate bonding primer.
Water-based primers work well on ceilings, interior walls, and exterior surfaces for new projects. On the other hand, oil-based primers offer better performance on surfaces that require more durability and stain-blocking capabilities.
Can you use water-based paint over Zinsser BIN? Absolutely, you can paint over Zinsser BIN with almost any type of paint, be it water-based undercoat, satinwood, gloss, eggshell, or emulsion.
Interestingly, oil-based paint will adhere to latex paint.
(Note: Bonding primers are not recommended for use over peeling paint).
Water based primer is usually used for walls and ceilings where there is new work and preparation is required, and oil based primer is primarily used for doors, windows, metal or woodwork. Enamel is hardier so surfaces that require heavy traffic or exposure to the elements are usually painted in enamel.
KILZ Original 1 Gal. White Oil-Based Interior Primer, Sealer, and Stain Blocker 10901 - The Home Depot.
That's just a bad idea. The latex and oil won't mix (oil and water, you know). Unless they're vigorously mixed together, the oil and water based paints will dry at different rates. The latex will dry within 2–3 hours and the oil may take days.
Painting is a popular and rewarding way to spruce up a room or outdoor space, but the fumes from oil-based paint primer can be dangerous. Some of the paint fumes' side effects include headaches, dizziness, nausea, and even more severe health problems.
Latex Over Oil: Yes, with Proper Prep
On the other hand, you can use latex paint over oil-based primer, but proper preparation is essential. Before applying latex paint over oil-based primer, make sure to sand and clean the surface thoroughly.
After priming, allow to dry 4 hours, test a small area for bleeding by applying the topcoat before painting the entire project. If the stain bleeds through, apply a second coat of primer and allow to dry overnight and retest before topcoating. Use Multi-Purpose Latex Primer over solvent sensitive stains.
Oil-Based Primer - These primers work with both oil paints and latex paints for interior and exterior paint jobs. Oil-based primers are great for blocking stains and are preferred for porous surfaces like wood.
When the oil-based primer is completely dry, the surface may still have a few small imperfections. This is typical even if you are a pro. The surface may feel chalky or even slightly rough. Using a Sanding Sponge, lightly sand the entire surface.
KILZ Concrete & Masonry Bonding Primer is specially formulated to optimize the adhesion of masonry coatings. With proper application, this product provides a sound foundation for coatings with excellent resistance to water, alkali and efflorescence.
A 'bond coat' primer that's great for hard-to-stick surfaces, it offers excellent adhesion without sanding. Bulls Eye® 1-2-3 also prevents rust formation when applied over clean ferrous metal such as iron and steel.
Not all bonding primers are self-leveling. If you've selected one that is not, sanding is a necessity to create a smooth surface for your paint or topcoat. Use fine-grit sandpaper so that you do not damage the surface. Sanding will allow for superior adhesion and durability.
Customers say the Behr Bonding Primer is an effective solution for various surfaces, providing excellent adhesion and coverage with minimal sanding required.