Is The Existing Coating Water Based Or Solvent Based

To determine whether the surface you are painting has an oil based or a water based paint coating on it, wet a cotton ball with methylated spirits and rub it over the surface. If the paint is removed, it is a water based.

To determine whether the surface you are painting has an oil based or a water based paint coating on it, wet a cotton ball with methylated spirits and rub it over the surface. If the paint is removed, it is a water based.