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\n<\/p><\/div>"}. There’s a better option out there! Can you paint over oil based stain and varnish with polyurethane? Can I use a sander between coats, or should I do it by hand? Read on for another quiz question. A dust mask is also useful for protecting your lungs from sanding dust when you sand the floor between coats. ", refresh the memory. Tip: To keep outdoor dust and particles away from the surface, applying polyurethane should take place in a well-ventilated room indoors, with an … Click on another answer to find the right one... To apply polyurethane, start by removing any old finish from the wood and sanding it down so that it’s completely smooth. Then using the tack cloth you can clean it off completely. Sanding between coats is to make the new poly coat adhere better to the previous one for protection, not merely to make a clean, even look. Read on for another quiz question. According to This Old House, polyurethane is the most popular finish for hardwood floors. Let it dry completely before you move onto the next step. She is co-founder of On Fiction Writing, a website for writers. Nope! As long as you don't get it super-hot, you don't have to worry that it might explode if you agitate it by shaking or stirring it. We welcome your comments and Yes, you can use a sander. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. All information is provided "AS IS." 1995-2018 MH Sub I, LLC dba Internet Brands. © Copyright 2020 Hearst Communications, Inc. Thank you! However, it makes spraying a poor choice for overall coverage, because you'd have to apply man coats. ", "This helped me to learn that polyurethane is not a polish, as I previously thought it was. Just be sure you use a tack cloth to clean off dust that’s appropriate for water-based finishes, like a cheesecloth moistened with denatured alcohol. Can you apply polyurethane over a painted wood trim to get a glossy finish?