How to Spray a Wood Floor Finish

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Finishing your wood floors with a spray instead of a brush is a quick, easy and efficient way to finish your floors. A brush allows a more meticulous and precise approach, but it takes much longer than spraying on a finish. Additionally, using a spray finish allows you to also use a fast-drying finish, which keeps dirt and dust out of the finish because it dries so fast, according to FineWoodworking.com. A spray gun atomizes the finishing liquid and propels it toward the floor while mixing it with air. Spraying is as simple as using a brush and quicker.

Things You'll Need

  • Spray gun (low-pressure)
  • Hand sander
  • Liquid spray finish
  • Six 4-foot by 6-foot cardboard panels
  • Duct tape
  • Box fan
  • Sand the wood floors to create a grip effect. The sanded floors will serve to grip the spray when applied. Use an electric hand sander or an industrial-strength sander to lightly sand the floors, keeping the job even and consistent.

  • Build a spraying booth to keep the spray from coating walls and furniture. Duct tape together six 4-foot by 6-foot cardboard panels, and top it off with a large piece of cardboard to serve as the lid. These panels will need to be moved with you as you spray, serving as a shield of sorts for the walls and other items in the room.

  • Open any windows in the room and, for further protection, place a box fan in each window. Make sure the fan blows toward the outside of the house when you turn it on or the fan will be counterproductive. This will serve as a vacuum for the fumes put out by the spray gun.

  • Set the nozzle on your spray gun to a low pressure to create a misty spray (not a pressure spray) when you pull the trigger. This will allow a more even and accurate coat on your wood floors. Pressure sprayers are effective in some settings, but for spraying a wood floor in a room, low-pressure spray is the best approach.

  • Starting in the back corner of the room--meaning the farthest spot from the door--begin applying an even and smooth coat of spray finish, keeping your arm moving back and forth constantly to avoid spraying too much in one spot. Let dry for about 24 hours.

  • Apply another coat if needed using the same steps practiced in steps 4 and 5, also using the fumes booth and all of the protective attire you used during the first coat.

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