About a month ago my friend and I refinished his white oak floor. The floor was drum sanded with 36 grit, 60, and then 80. It was also edged with the same grits, and screened with 100 grit prior to staining. We used minwax stain and minwax fast drying satin. The stain went on well and was given 24 hours to cure prior to coating with poly. The first coat of poly went on well, with some minor bubbling. We screened with 220 grit screen and then re applied.

The floor looked pretty good after the second coat went on but there was some spots my buddy was not happy with, so he paid a professional in the area to come back and screen and recoat the entire floor to eliminate some of the applicator marks and lines we were leaving during the application. He applied masterline polyurethane in satin.

After he left and the floors dried everything looked really good, however over the last month spots on the floor have began to chip and flake away, and the top coat does not seem to be as resilient as it should be. I have attached a photograph of what I am talking about. There are basically spots like this in every room in the house, some worse than others. The finish seems to keep flaking off if you pick at it in these spots.

Is there a solution for this? What could have caused this to occur. It seems like the only coat this is coming off is the top coat, the two coats that we did seem to be fully adhered.

It looks to me like Masterline and Minwax didn't bond properly, which means you might have to resand.

I'm not a fan of neither one of these brands when it comes to floor finishes and I really can't comment on mixing them up since I've never done it, but it looks like that's what happened.

Did you allow enough time between the second and third coat for the finish to properly cure?

We waited about 36 hours between those coats. The professional came to do the third coat at about 24 hours, said it was not dry enough. He came back the next morning and felt like they were good to go. Screened and applied the Masterline. It seems like the spots are getting worse. I agree that the Masterline did not bond to the minwax, is a screen and recoat a possible solution?

It seems like it is getting worse.

Sounds like still wasn't dry enough even though he thought otherwise. Were you there? Did it look like the buffer was leaving swirl marks in the finish? That's an indication of a finish that's still wet.

To be honest, I would try a good screen and recoat before I'd resand the project, but it's not guaranteed to work.

You know what, try this before you do anything else, spot screen and touch up some of these areas and see how they come out. Don't worry about the touch ups not looking right, you wanna see if the "fix" as a screen and recoat works on these areas.

If they do, I'd give it a good buff and pray for the best.

Now, if in the worst case scenario you don't succeed and need to resand, use Bona Woodline next time for finishing, if oil based polyurethane is your finish of choice.

You cant screen and recoat a failing finish..there is no bond..

i think th problem was in your stain and finishing.

if you used the 350 VOC Minwax stain formula..more likely the problem is there.

the fast dry poly is not a great product either.

th job will need to be redone.

if its minor spotting it may be possible.

take a razor and in inconspicuous area of floor, cut a number symbol into the floor..put masking tape on it and and then pull it up..if finish comes off on the tape its peeling and needs to be redone.