When sanding a bathroom floor, it is important to start with the proper safety equipment, such as safety glasses and a dust mask. You will also need a vacuum to remove all the dust particles created during the process.
Next, you will want to choose the right type of sandpaper. Coarse grains are best for rough surfaces, while fine-grit sandpaper works better on smooth surfaces.
When sanding, start with a circular motion and gradually switch to back-and-forth motions. Take extra care to sand in those tight corners and along walls. Once all of the sandings are complete, use a shop vac to clean up any remaining dust particles and then apply sealant, stain, or paint as desired.