Acrylic latex paint can be used over oil-based paint, but it requires additional preparation according to Pittsburgh Paints. Things that can cause the new paint to fail include using latex paint that is not 100 percent acrylic and not preparing the wall properly.
The reason acrylic paint has difficulty adhering to oil-based paint is that while latex paint is flexible, oil paint is not. Over time, heat and sun cause the latex paint to expand slightly, pulling it away from the oil paint.
To prepare the wall for painting, sand it lightly to remove the glossy surface and wash it well.To ensure even better adhesion of the new paint, use one coat of primer paint especially formulated to prep oil-based walls.Learn More
Acrylic paint can be thinned for airbrushing by adding distilled water to the paint until it has the same consistency as milk. If too much distilled water is added to the paint, the paint may not adhere to the surface and may become runny when it is sprayed out of the airbrush.Full Answer >
The length of time it takes for oil paint to dry depends on several factors. Generally, a normal application of oil on canvas is dry to the touch within a week and fully dry within two to three weeks.Full Answer >
Oil-based paints can be thinned with a wide range of solvents and oils, including turpentine, mineral spirits, safflower oil and paint thinner that has been formulated for use with oil paints. The same methods can be used for thinning oil paint whether it's being used for house painting or artistic painting.Full Answer >
Acrylic paint can be used on most surfaces, including metal. Acrylic paint is highly versatile and can achieve a wide variety of effects. Due to its low price and quick dry time, it is a very popular type of paint. Metal, like most surfaces, needs to be prepared before painted.Full Answer >