Step 1
Clear all movable items from the room and clean the floor. Dust or sweep the area with a clean cloth to remove as much dirt and dust as possible.
Step 2
Apply chemical stripper to the floor. Use a paintbrush to apply a uniform coat of the stripper to all areas of the floor. Be careful around corners, being sure to get the corners without touching the walls.
Step 3
Scrape the polyurethane off. After the chemical stripper has set the manufacturer's recommended amount of time, the polyurethane will begin to bubble and turn loose. Use a putty or floor scraper to remove from the floor. Collect and dispose of the scrapings.
Step 4
Sand the floor lightly to remove any remaining polyurethane. Small bits may stick even after stripping. Lightly hand sand these areas to get any remaining bits.
Step 5
Sweep or wipe down the floor to get rid of any remaining loose debris.