Rental sanders can address moderate surface damage, but their effectiveness depends on scratch depth and overall floor condition. Drum sanders offer the most aggressive removal capability for deeper imperfections. However, if the damage extends into the wood structure or affects large portions of the floor, board replacement by an expert might be necessary before sanding. Consult a flooring professional for help.
Always thoroughly review the manufacturer's operating instructions before starting. Wear appropriate safety gear, including goggles to protect your eyes and a respirator to prevent inhalation of dust. Inspect electrical components before each use to prevent shock hazards. Keep children and pets away from the work area, and maintain a clean space by frequently vacuuming dust accumulation to prevent slipping and to ensure you can see well.
Sandpaper requirements depend on floor size, condition, and the sanding approach. Plan to use multiple grit levels (coarse, medium, and fine) with at least one to two sheets per 100 square feet for each grit. Floors with significant damage or multiple finish layers will require more coarse-grit sheets. Purchase extra supplies before beginning because running out mid-project can cause visible inconsistencies in the final result.