Re: Wood floor finishes
Agree with the sealing, but orbital sanding can leave circular scratches that show up. Get, borrow or buy a belt sander with especially fine grit belts to make sure everything is with the grain.
In fact, I installed a red oak floor and used oak sealer, the stuff is about the consistency of cake batter. (The stuff is rather hard to find, I had to purchase it from Schmucks Lumber and Millwork in Alexandria VA. BTW, they had a curved Cherry staircase in the showroom 5 ft wide. Looked like something out of a 1940's movie) I let that sealer dry and sanded. Used tack cloths to take up the dust, and then a coat of thin polyurethane, followed by another hand sanding with 600 grit paper, and tack cloth to get up the dust. Then 4 coats of polyurethane.