Cover Stain® is the only interior / exterior primer, sealer, stain sealer and bond coat that dries for recoat in only two hours. On interior surfaces, Cover Stain® dries quickly and has great hiding power providing outstanding stain killing and enamel undercoating performance. Stains of all kinds are permanently sealed so topcoats are blemish free. Cover Stain® is especially effective on nicotine and water stains. New wood trim can be primed, sanded and topcoated the same day, saving time and money. On exterior surfaces, Cover Stain® has a unique formulation that delivers full penetration and flexibility on all surfaces, especially dimensionally unstable wood paneling and trim, where few oil-based primers can succeed.