Sandpaper grit designations might be the opposite from what you think.
What grade of sandpaper for hardwood floors.
This is usually the final grit for maple birch or other particularly hard woods and for any floor that you would like to stain.
In most of my projects i have always started with a rough grade 50 grit followed by a medium one 120 then a fine 240 grit one or more for the finishing.
Protect yourself from the dust by wearing a dust mask and safety goggles.
Be sure the paper is properly installed and be prepared to change it regularly.
Initial efforts in hardwood floor sanding.
As you begin sanding remember never to turn the sander on while the sandpaper and drum are touching the floor.
Use a coarse grade in the beginning unless the floor is in very good condition.
A higher number means a finer softer sandpaper grit.
Decide on the grade of sandpaper that you are going to need.
Can take out the scratch from 120 grit or 100 grit sandpaper if necessary.
Takes out 60 or 80 grit scratch.
More facts on sandpaper types.
For example 60 grit sandpaper is the roughest sandpaper typically used on wood.
This is usually the final grit for most standard hardwood floors.
It can be made from the grains of a natural mineral called garnet or from synthetic ones like aluminum oxide alumina zirconia or silicone.
Sandpaper for power sanding is sold in.
The lower the grade the rougher the sandpaper.
A lower number means coarser and more abrasive.