If it’s waterborne, a coat should dry in less than 2 hours and be ready for the next coat. How long does polyurethane spray take to dry and cure? It mainly depends on the type of poly. Clear the nozzle well and store the can as instructed by the manufacturer. 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
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