• When shopping for sand paper, it would be wise to pick up large quantities of the 36, 60, and 100 grit paper. Again, this is obviously just a very rough guideline. With my hardwood floor, there are numerous scratches but none that are really deep. Floor sanders come in three distinct types: edgers, orbital sanders, and drum sanders. Thanks for your information. , How to Pick the Right Grit Sequence for a Hardwood Floor. When you sand your hardwood floors, you use coarse sanding equipment to remove all of the finish and stain from your floors as well as smooth out the wood underneath those layers of stain and sealer. So countersink all nails by at least 1/8 in. Unfortunately there is no set guideline as to just how much paper you should buy, however, here is a rough estimate for a standard-sized room with a typical wear and tear. Spot sanding and touching up is very difficult to blend back in. The rest of the grits are simply smoothing it out and making the floor ready for the finish. The floor will accept the finish evenly and look great. If your house was built before the ban in your country, consider hiring a floor finisher with lead certification to test your floor and refinish it safely. Floors that have been painted may even require you to go tougher and use 24 or 16-grit paper. For instance, if the floor is in a bad state or old you may need to start with a coarser sandpaper to sand down to the original floor. I sanded my whole floor with a starting grit of 80. This will ensure the smoothest results possible. In the hands of an experienced craftsman, a drum sander will make a lot of sanding go much faster. I had no idea that 12 grit is usually what you start with, and the most coarse. Below you’ll find a price guide for wooden floor sanding, repairs and surface finishing with either an oil, wax or lacquer. Most operators perform sanding using the dry method, while the final polishing is done on a wet floor.