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(I don’t know if flooring questions are appropriate for ‘Woodworking’ or ‘Homebuilding’, so I’m posting it both places.)
We recently (last week) had new hardward floors installed in our family room and kitchen and they look great. They used a traditional, oil-based polyurethane for the finish (Dura Seal).
I’ve just read about moisture-cured polyurethane from a number of companies. They all indicate that it’s their toughest product.
b Is possible or advisable to put down a moisture-cured surface directly over the (new) oil-based polyurethane?
If the stuff is as claimed, it may have been the ultimate product for my situation, but I found it after the other stuff was down.
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Flooring finishes.
The moisture-cured polyurethane varnish could cause problems if applied over oil-based polyurethane because the solvents are different and you might get "orange-peeling" on the existing coat. The difference in hardness is slight, far better to keep an eye on the wear and re-coat with oil-based when necessary. A tip, don't ever use anything to clean the floor except warm water and a mild detergent (dish-washing liquid is ideal) that way you won't get rejection problems when you come to re-coat.
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