How Long Does It Take For Spray Paint To Dry On Glass. Depending upon the type of finish you are doing, it can take about 3 to 4 hrs to totally hard dry. To spray paint any type of glass, ceramic, or porcelain, wipe down the surface with rubbing alcohol to remove any dirt or adhesive on the surface of the glass that would prevent the paint from sticking.
Due to the rubber’s porous surface, it takes at least 24 hours for spray paint to dry after application. Do not apply any polish before the lapse of at least 10 days until the paint is completely cured. After the alcohol has dried, shake the spray paint can for about a minute.
This is to see whether splotches will show up or not.
Setting the paint can be done in a few ways. Permit a few hours for the first coat to dry, then spray a second coat. Surface dry in 3 to 5 minutes, touch dry in 10 minutes and hard dry in 2 to 3 hours. If you didn’t get a primer, this would act as the primer.