Cover Stain from Zinisser dries quickly and has great hiding power, providing outstanding stain killing and enamel undercoating performance. It's suitable for both interior and exterior use and sticks to all surfaces without sanding. This product seals water, smoke, and nicotine stains, and is our best exterior wood sealer, blocking cedar and redwood bleed. It's touch dry in 35 minutes and recoatable in 2 hours.