How to Apply a Varathane Spray Polyurethane Finish

Varathane spray polyurethane combines the quality of the Varathane brand with an aerosol can to create a convenient way to apply a durable polyurethane finish to any wooden surface.

Wooden furniture can be finished with a polyurethane spray.Wooden furniture can be finished with a polyurethane spray.
Fine detail is difficult to finish evenly with a foam or bristle brush. Spraying the finish is convenient and fast, and the polyurethane will accept subsequent coatings to create a hard-wearing finish in satin, semi-gloss and high gloss sheens. Varathane spray polyurethane can be used successfully over unfinished natural wood, stained wood or painted wood.

Lay drop cloths over flooring, furniture and other objects to protect them from overspray.

Shake the can of Varathane spray polyurethane vigorously for three minutes before use. Shake the can at various intervals while using the product to keep it well-mixed

Hold the spray can 10 to 12 inches from the surface of the object you are finishing and spray in long sweeping motions to avoid drips and runs. If runs and drips appear, touch them up with a foam brush. Apply one light, even coat at a time for best results. At least three coats are recommended for a durable finish.

Allow each coat to dry thoroughly. Varathane spray polyurethane dries to the touch in two hours and dries hard in four hours. For a smooth coating, sand the finished surface with a 220-grit sanding pad between coats (called buffing). Remove the sanding dust with a tack cloth before spraying a fresh coat.

Hold the can upside down and push the button to clear the nozzle if the can is not emptied. When the nozzle is clear, only compressed gas will come out of the can. The can is then ready to store.

Things You Will Need

  • Varathane spray polyurethane
  • Drop cloths
  • Foam brush
  • 220-grit sanding pad
  • Tack cloth

About the Author

Kelly Nuttall is a student at Utah Valley University in Orem, Utah. She is set to graduate in the spring of 2011 with her bachelor's degree in technical communications. She has been writing for various websites since March of 2009.