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leslie_morones

Flooring pros Help Pls!

5 years ago

So we are refinishing 90yr hardwood flooring with the hopes to lighten the floors and use a WB PU Loba invisible 2k but as the floors were sanded they remained orangy and appear oily in some spots.
Has anyone seen this before? My guess is that they were sealed with oils at some point then oil based poly was added.
How can I remedy? I fear adding more stain won't help and that the WB poly will no adhere. Also, more sanding isn't an option as we sanded using 24 grit and to no avail.
I tried wiping the floor with Mineral Spirits and some of the stain came up on the rag but no noticeable difference.
Can I bleach the floors with that much oil on it? Can I use dewaxed shellac and still use the loba invisible 2k?
Below are pix of the floors sanded, the darker spots are the oily looking spots.

Comments (7)

  • 5 years ago

    Than you for your response. Amazing, yes it is beautiful just not what I was expecting, an unexpected surprise. What do you make of the oil blotching any way to correct that?

  • 5 years ago

    You can do a little spot test. I would pick up a little can/quart of Varathane or Rustoleum (Varathane = Canada; Rustoleum = USA) water based poly. You can stroke on a coat or two over one of the 'dark' spots. You can then leave it for 1-2 weeks. You then do the 'adhesion' test in the middle of the patch. If you get adhesion failure, then you know there is too much oil on it.


    And if you used mineral spirits, you will need to clean those areas really well...mineral spirits can leave residue that will stop the Loba from grabbing. It will also stop the Varathane/Rustoleum WB stuff from sticking.


    If your test patches are well adhered...just sand them off once again and get ready for your Loba application.

  • PRO
    5 years ago

    I do not see any oil spots. If, you are talking about the darker spots in the photos. You burnished those spots with dull or clogged sandpaper. It brings out the natural oil in wood. I would not worry about it.

  • 5 years ago

    Thanks all for the help, will keep you updated. Also, any ideas of where to source 2 1/4 inch wide x 3/4 thick heart pine boards? There are a few boards that need replacement. I've only found 5 inch boards which I can cut to width, but just curious of they're out there. I'm in NYC area. Thanks again!

  • 5 years ago

    First and foremost do not put any more chemicals on that floor. Let it breathe for a little bit.


    If you would like to reach out to me with your location & contact info at stephanie.johnson@loba-wakol.com I can have 1 of our technical reps give you a call.

  • 5 years ago

    Thank you all for your input. The floors came out beautiful thank you!!