Things You'll Need:
- Coarse sandpaper (20-grit) Medium sandpaper (50- to 60-grit) Disc sander Drum sander Scraper Lint-free rag Paint brush Stain Sealer
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Step 1
Make sure all dirt is removed from the hardwood gym floor before sanding it. Make sure that the floor is dry.
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Step 2
Load your coarse sandpaper in your drum sander per the manufacturer's instructions.
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Step 3
Plug in your sander. Align yourself with the floor's grain.
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Step 4
Turn on the sander and touch the drum to the floor. The drum sander will rotate itself forward. Allow the sander to move itself forward in a straight line. When you reach the opposite wall, lift the drum sander. Continue across the entire floor, overlapping each pass by 2 inches.
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Step 5
Load your disc sander per the manufacturer's instructions. Use the disc sanders in areas such as around the walls of the gym, where your drum sander was unable to reach.
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Step 6
Load your drum sander with a medium-grit sandpaper, and do a second pass over the entire floor. Load the disc sander, and go over the areas the drum sander missed.
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Step 7
Sweep up the floor to remove all of the dust before refinishing.
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Step 8
Work in 2-square-foot areas, and begin applying the stain by dipping a lint-free rag in your color of choice. Work it into the area and allow it to penetrate the wood for 10 minutes. Wipe up the excess with a clean, lint-free rag. Repeat until the entire floor has been coated. Allow the stain to set for 8 hours, and repeat this process.
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Step 9
Apply a sealer to the floor in the same manner in which you applied the stain. Wipe and allow it to set for 48 hours before using the gym floor.
