Zinsser 03504 Cover Stain Interior/Exterior Oil Primer Sealer, 1-Quart, White Cover stain, QT, Oil based stain killer primer/sealer Adds extra shine to your product Manufactured in United States High-hiding formula blocks most stains and helps seal water, smoke and nicotine stains Sticks to interior and exterior surfaces and sands easily Great for new construction, remodeling or repainting work and priming small projects Dries-quickly on interior surfaces and helps provide enamel undercoating performance Use on exterior surfaces to help deliver full penetration and flexibility on surfaces