How to Bleach Wood

Discussion in 'Remodel Forum & Blog' started by Blumengarten, May 26, 2009.

  1. Blumengarten

    Blumengarten New Member

    Messages:
    56
    Location:
    Pennsylvania
    Hi Folks,

    When my cat got old, it got diabetes and peed all over the wooden floors, sometimes in places where I couldn't find until it had already soaked through the finish (like behind the piano, behind the sideboard, behind the couch, etc., yuck!). I got some stuff that removed the odor and that seems to have done the trick (at least so far, the real test will be in the heat of summer), but now I'm left with ugly stains on the floor (they're oak).

    I've done internet searches on wood bleaches, and learned that there are two different kinds, which work on different types of stains, but I can't find out which would work on urine stains (if any would). I'd like to get these sections of wood (there are several) closer to the yellow oak color of the rest of the floor, rather than this really ugly dark brown!

    Thanks,
    Joy
  2. Ian Gills

    Ian Gills Senior Robin Hood Guy

    Messages:
    2,780
    Location:
    USA
    If the urine has deeply penetrated the wood, there may be no choice but to sand it down and refinish. This may be best left to a professional.
  3. Blumengarten

    Blumengarten New Member

    Messages:
    56
    Location:
    Pennsylvania
    Hi Ian,

    I've sanded, stained, and refinished the floors in both my house and my mom's, so I'm not afraid of the work. If I felt like doing the work, I'd just sand the entire floor and stain it dark to cover the stains, but I don't want to go to all the work and expense. I just want to know what kind of bleach would be best to lighten the stain so it doesn't stand out as much.

    Thanks,
    Joy
  4. killavolt

    killavolt In the Trades

    Messages:
    33
    Location:
    Southington CT
    I like Oxalic acid (wood bleach) especially for use on pet stains. It will bleach the stain out without turning the wood white. Depending on the depth and severity of the stain, you may have to apply two or more times to completely bleach out the stains. You can buy Oxalic acid from most home centers in the paint department.
  5. Blumengarten

    Blumengarten New Member

    Messages:
    56
    Location:
    Pennsylvania
    Thanks, Killavolt, that's exactly what I wanted to know!

    Joy
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