matching old and new floorboards, lye finish

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hermione

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Hello! I sanded my dark stain floors and the boards are two very different tones. I want to bleach the boards with Danish lye for an all-over light finish, but worried that won't even out the colour... any suggestions? Thanks :)

UNADJUSTEDNONRAW_thumb_33e6.jpg
 

highup

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I'm surprised after sanding the old boards aren't lighter. How many passes with the sander?
We're the boards all the same color before sanding?
 

hermione

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the boards all had a thick dark stain before sanding... took a lot to get it off. The colour isn't a surface layer. I think it's a different type of wood, assuming both pine, but not entirely sure about the darker one...
 

highup

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Wood like yours isn't my profession, but looks to me like staining the lighter wood to match might be a better option. Does the Danish lye need to be neutralized after it performs it's magic?
 

hermione

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Thanks for the thoughts. Excess lye gets washed off, floor then treated with oil or floor soap. I think I will test the lye on both woods to see how they respond. Aiming for a nice light finish if at all poss, something along these lines
1589739800138.png
 

highup

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Only concern that I have right now is will the lye remove stain because that might be the darkness in the wood, not simply the wood species.
You can always try a small area near the wall and on a plank that adjoins the lighter colored wood.
 

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