Only water based acrylic or latex paint should be used on foam insulation whether you are using the material for crafts or are painting unfinished walls.
Painting over spray foam.
Avoid using spray paints as they will dissolve the styrofoam.
Avoid any oil based or other solvent based.
And although it might be a way to improve the overall appearance of an insulated space that has not been covered with drywall much care must be given to the paint and the application.
Fill in cracks with insulating foam and then paint it.
It is also beneficial because it is much gentler on the spray foam.
After allowing the foam to harden and cure sufficiently you can paint it any color you want to ensure that it blends with surrounding surfaces.
Painting over spray foam insulation is not a straightforward undertaking.
And although it might be a way to improve the overall appearance of an insulated space that has not been covered with drywall much care must be given to the paint and the application.
If you want to keep your styrofoam s shape and texture the same when you re painting it stay away from spray paints.
Paint over the gesso with water based latex paint in the color of your choice.
If you are researching can you paint over expanding foam because you are planning on painting over expanding foam in your home using spray paint is a favourable option.
This is because it takes far less time compared to painting over it with a usual bristle brush or roller.
Apply as many layers as needed for full coverage and let dry.
Regular spray paints such as latex or enamel ones eat up the styrofoam once you spray the paint onto it.