Zinssers cover stain is an 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 top coated the same day saving time and money on