This premium, whole-house primer-sealer provides outstanding results, with low odor, as well as great flow & leveling. Water-based, acrylic primer delivers flexible use to stick to all surfaces without sanding whether you're working indoors or outdoors. The durable formula resists mold & mildew & inhibits rust for results that last. Quick-drying design dries in just one hour to apply additional layers with a minimal wait time.