removing dark urine stains from hardwood floors

spinachqueenMarch 20, 2012

How do I remove dark urine stains from hardwood floors. Our dog has been urinating on a rug under table and I've just discovered it. Any advice? It's really dark!

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glennsfc

You can't. You will have to replace the stained material.

    Bookmark   March 20, 2012 at 10:54PM
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tinan

You may be able to sand down to unstained wood and re-seal.

    Bookmark   March 20, 2012 at 11:59PM
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brickeyee

"You may be able to sand down to unstained wood and re-seal."

The problem that usually shows up is that the urine can penetrate at the joints between the strips of floor, and you simply cannot 'sand out' enough to remove the staining that came in from the edge of the strips.

If it is a small area you can remove strips and replace them.

If the floor is old look at closets fr a ready source of matching wood.

The new wood in the closet will not show as badly

    Bookmark   March 21, 2012 at 9:13AM
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spinachqueen

Thanks for your advice. This is depressing! We'll just have to see how it works out.

    Bookmark   March 21, 2012 at 8:17PM
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tinan

If the floor was NOT prefinished, then the cracks should be sealed and the urine will not have gone down between the planks. Rent an orbital sander and test it out - it's not expensive to rent one for the weekend, then you can reseal it if you are successful in getting down past the stains.

    Bookmark   March 22, 2012 at 12:39AM
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brickeyee

"If the floor was NOT prefinished, then the cracks should be sealed and the urine will not have gone down between the planks"

A site finish does not seal the floor longer than the first heating season.

The wood shrinks, and every joint opens slightly.

    Bookmark   March 22, 2012 at 10:19AM
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tinan

From my one-time experience in fixing a urine stain on a hardwood floor which was site finished (renter's litterbox leaked and had no mat underneath), it was easy to sand down past the stain and refinish. So I think there is at least a chance that this is easy to fix. I would certainly try the sanding down before ripping it out and replacing it.

    Bookmark   March 23, 2012 at 12:45AM
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Jon_dear

You could sand all the way to plywood and never get the stain out. Just sayin' Remember the sandable thickness is only about 3/16 to 1/4 of an inch. At that depth you hit nails/staples in the tongue.

    Bookmark   March 24, 2012 at 8:03PM
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cindyls

I have the same problem. I just ordered a wood bleach. I'm going to lightly sand my floor in that area, and then apply the wood bleach. I will then put sealer on top. I hope it works. I will let you know.

    Bookmark   December 2, 2013 at 3:13AM
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glennsfc

Follow all the directions on the wood bleach. Some of that stuff is real caustic.

    Bookmark   December 3, 2013 at 12:09AM
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