On older floors the first step when sanding is to choose an aggressive grit like 24 grit per square inch to level the boards one to another and remove imperfections if possible.
What grit of sandpaper for hardwood floors.
Use a radiator edger to sand under all radiators or toe kicks if you have them.
We call this process rough cutting.
Macro grits are a class of abrasives that range from medium to coarse sandpaper calibers.
Use overlapping strokes by at least 1 3 the belt width to remove scratches.
Start with coarse sandpaper of 36 to 40 grit progress to a medium 60 grit paper and finish with a finer 100 grit.
This is usually the final grit for most standard hardwood floors.
Can take out the scratch from 120 grit or 100 grit sandpaper if necessary.
Macro grit sized sandpapers are commonly used on tougher wood and metals and have a stronger clearance.
Sanding wood floors refinishing yourself will definitely save money and even an inexperienced homeowner can likely do a better job than the lowest bidding handyperson who quotes on it once you understand the basics a quality final result on your wood floor is more about patience than anything else.
Takes out 60 or 80 grit scratch.
Dura gold premium 12 sanding discs variety pack box 60 80 120 180 240 grit 1 disc each 5 total sandpaper discs with psa self adhesive drywall floor woodworking auto for power sander 10 96 10.
Do not skip the progression from coarse grades to finer grades.
The result is a fresh new looking wood floor.
This is usually the final grit for maple birch or other particularly hard woods and for any floor that you would like to stain.
Once the entire room is down to bare smooth wood switch to a medium 80 grit sandpaper.
For most floors 36 grit sandpaper is a good place to start.
Best answer for either soft or hardwoods start around 50 grit and gradually step down to 120 grit.
More facts on sandpaper types.
The medium grit paper smooths the floor by removing the visible lines from the coarse sandpaper.
If your floor does not have serious damage and only has a thin layer of finish you may be able to skip this step and start with 60 grit sandpaper instead.
Replace the abrasive belt after sanding about 250 square feet for most effective results.
They feature mid to low grit numbers.