Over the Labor day weekend, I refinished a 120 square ft room as a
test run in preparation for the much bigger living room, adjoining
dining room downstairs hard wood floor totaling about 600 square ft.
Although the results looks pretty good, it took almost the complete
weekend to finish. Sanded the floor first with a belt sander rented
from Home Depot (4 hour rental), cleaned, and coated with three coats
of gloss polyeeurathane (oil based), eight hours between coat and
sanding before each coat.

I used a gallon of polyeurathane. The label said coverage is 400 to
500 sq ft. I found 1 gallon is barely enough for a shining floor.

I wonder if I can do the 600 square ft floor over a regular weekend.
It was easy to keep my two dogs away from the room. The living
room/dining room is very open. It may be a challenge. Also what
about using the rotary sander? I think I should do it before the
weather gets cold.

Would appreciate opinions from those who have done this before.