Depress the nozzle tip until it stops coming out anything else except for clear propellant. Sand with 220-grit paper between coats, if necessary. Wait until the coat is thoroughly dried before applying another coat. Unless you need a thicker spray, mainly, stick to thinner coats.Ĭanned spray is used to create thin coats, which naturally dries faster. Thin coats don’t run or sag, and they develop cracks rarely. This position will prevent the wet finish from running down the vertical side rather, it will pull that down into pores.Īpply thin and wait to dry before a second coat. Place your project like you’re going to spray the wood surface horizontally. Shake for a minute to ensure proper mixture of the polyurethane, solvent, sheen, and propellant before pressing the nozzle on your wooden surface. Polyurethane contents of any aerosol tend to settle at the bottom. Make sure your piece of wood is smooth and even through sanding as required, ready to get a protective coat. How to Spray Aerosol Poly – Step by Step Guide Pick a thicker spray if you need a thick surface layer and to avoid more coatings.Get the fast-dry sprays if you need the project done promptly. Drying time is another essential consideration.Check the capacity to fight against humidity and heat, particularly for dining tables or cabinets.Pick a spray based on the desired appearance of finish, such as waterborne for a clear finish or oil-produced for a rich amber finish.But for safe indoor use (low VOCs, less odor) with lower durability, waterborne aerosols should get your preference. If you consider it for long-lasting outdoor projects, gloss oil-based units can do the job best.You should get the oil-based, anti-UV sprays for exterior projects, while waterborne spray will suit indoor wooden surfaces more.
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