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Deep Stains

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Forum topic by kyguy posted 03-23-2015 02:56 PM 538 views 0 times favorited 2 replies Add to Favorites Watch
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kyguy

1 post in 621 days


03-23-2015 02:56 PM

I’m in the process of sanding my hardwood floors for refinishing.there are some areas where it seems like theres some kind of stain is all the way through the wood. I’ve made at least six or seven passes over some spots with the drum sander and still doesn’t seem to be coming out all the way, where as a single pass takes off all the finish with 60 grit paper in other areas. Is there something I can do to lighten the stain or better yet remove it with bleach or hydrogen peroxide ? I’m afraid to make too many more passes and wont be able to feather them out with this drum sander takes a lot of wood quickly. Check out the pics,

the 1st one in the middle where it looks like a huge puddle is where I’ve made the most passes, the others only made 2 before it was time to return sander.


2 replies so far

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CharlesNeil

1610 posts in 3330 days


#1 posted 03-23-2015 03:09 PM

Looks like a water/ iron stain, Try a little “deck Brightener”.. its oxcllic acid, a bleach that handles these type of stains .

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Hammerthumb

2532 posts in 1434 days


#2 posted 03-23-2015 11:09 PM

I believe it is pet urine. It penetrates deeply. Charles is right. 2 part oxollic bleach. Last time I bought it was at Sherwin Williams. You should keep some vinegar and water mixed 50/50 to neutralize the bleach. Just do the dark spots. If left too long, it will turn it white.

Most important: read the directions. This is highly toxic stuff and will burn any part of your body that it contacts. Eye and face protection and elbow length gloves are highly recommended!

-- Paul, Las Vegas

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