This floor sanding was a tough challenge. We had to repair the floor in a room for rent which was not renovated in the past 25 years. The flooring was in horrible condition, and it required a lot of additional work.
We had to reclaim many floorboards, sand the entire flooring, do the best gap filling, and finally the finishing. The gap-filling was more complicated due to the floorboards' size.
The job took 11 hours.