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removing oil-like marks.stains when screening/finishing oak wood

Posted by debndulcy (My Page) on
Tue, Oct 27, 09 at 10:47

I'm about to screen or lightly sand my old oak wood floors, but concerned about getting whatever substance (it looks like an oily substance - possibly from food or a bathroom product) - out in the process - before applying polyurethane. I've done a lot of wood furniture finishing and don't recall a way to get such marks or stains out (saw someone use a darker stain and work towards blending all - but that's not an option in this case).
I had the 60-yr old floors fully refinished 10 years ago when I first bought this house, as they looked so awful. All of the work (and cleaning thereafter) in the house since has removed most of the polyurethane and any seal (and of course, there are scratches, too).

I am also concerned that when my forced air heat 'blows'(given the season), that it will blow dust into my wet poly finish. Could that happen and is there a way to reliably protect against it?

THANK YOU for all information and advice which may help -


Follow-Up Postings:

RE: removing oil-like marks.stains when screening/finishing oak w

I think using two different types of sanders will do the best job.

First, to get off the remaining poly, use a buffer sander with mesh pads. Start at 80 grit and then 100. Use a ROS for corners(and a card scraper).

Then switch to a U-Sand sander. That is a heavy machine with four sanding ROS type sanders and dust collection. It is only recommended for unfinished floors. Start with 100 grit and work to 150 and 220.

I always do floor sanding/finishing in the summer so I can turn off the blower.

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