That old gym floor at my neighborhood rec center looked rough. Deep scratches everywhere, splinters sticking up, and you could hear it creak whenever someone ran across. I figured I could learn how to fix it myself instead of nagging the city council about it.

Clearing Out & Inspection

First, I borrowed keys from the janitor and hauled out all the basketball hoops and bleachers. Swept the whole area with a push broom, then got down on my knees checking every plank. Found three rotten boards near the free-throw line where rain leaked through the roof last winter.

The Dirty Work

Step one was tearing out the bad boards. Used a circular saw to cut out the damaged sections – sawdust went flying everywhere, looked like a beige snowstorm. Dug through piles at the hardware store to find matching maple replacements. Had to chisel the tongue-and-groove edges by hand because the new boards weren’t fitting right.

Sanding Nightmare

Rented this giant floor sander that nearly broke my wrists trying to control it. The instructions lied about “easy operation” – thing kept jerking sideways like an angry bull. Went through three grits:

• Started with 36-grit for deep scratches
• Switched to 60-grit after two passes
• Finished with 100-grit for smoothness

My ears rang for hours even with earmuffs. The dust collector bag exploded halfway through – looked like a flour bomb went off.

Sealing the Deal

Used water-based polyurethane because the internet said it dries faster. Bad idea. The first coat went on streaky and showed every brush mark. Had to sand lightly AGAIN with 220-grit paper, which took forever. Second coat went on smoother after I switched to a lambswool applicator, but then I stepped in wet finish running to stop a door from slamming. Left my shoeprints near center court forever.

Final Result

Took four days total with sore muscles everywhere. Still have flecks of polyurethane in my hair. But man, seeing that first kid slide across the shiny surface without catching splinters? Totally worth it. Just don’t look too close at my shoeprint art near the half-court line.