Old reclaimed oak wood floors. Polyurethane question.


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Old 09-17-15, 11:41 AM
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Old reclaimed oak wood floors. Polyurethane question.

We just bought a 15 year old custom built Los Angeles home designed by an architect who lived in it for 10 years. The floors were never refinished. A contractor has suggested scraping and finishing with two coats of oil based urethane and one coat of water based to hinder yellowing. Does this sound right?
If so I want to give these specs to others I'd like bids from. Many thanks for any insights you can offer.
 
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Old 09-17-15, 11:49 AM
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Up until you got to the poly, I was on board. Personally, I like the amber coloring added by oil based poly so three coats of that is what I would use. If you don't like the amber, use three coats of water based. I have doubts about anyone who suggests water based over oil based.

Also keep in mind that a light scuff sanding along with removal of the sanding dust is needed between coats of poly to promote adhesion.
 
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Old 09-17-15, 11:55 AM
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Thanks much for your expertise, but to clarify, is mixing the oil based and water based a no-no or
is there another reason his suggestion is questionable? He is a very respected guy with tons of satisfied customers.
 
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Old 09-17-15, 12:00 PM
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Water based products tend not to stick to oil based products.
 
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Old 09-17-15, 12:23 PM
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Many thanks for your expertise and help.
 
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Old 09-17-15, 01:43 PM
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I've never heard of a pro applying waterbased poly over fresh oil base poly Waterbased poly is supposed to adhere to sanded oil base but I don't have a lot of confidence in that.

I also like how oil base poly deepens the colors naturally in the wood and ambers some over time. Another benefit of oil poly is it dries to a harder film = longer wear. I'd recommend water based poly only if you want a poly that doesn't change the look of the wood any.
 
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Old 09-17-15, 02:25 PM
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I also don't believe that one coat of water based poly would "stop 2 coats of oil based poly from yellowing." The latex is not a UV barrier.
 
 

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