Make sure that the water–based polyurethane coating is fully cured. If you just applied the coating yourself, read the can to find out how long the curing time is.
I just finished a wood floor with oil based polyurethane.. top coat oil with water UNTIL the oil is FULLY cured, which can take 30 days or more.
Recoating a water–based acrylic floor finish with oil–based polyurethane is not usually a problem, so long as the old finish is properly buffed and cleaned.
A friend recommend polyurethane as a finish, but the can she gave me says it is oil–based. Can I apply it over the water–based stain? A. – You could, but I would .
We explain how to choose and apply polyurethane on our blog.. If you want wood to keep its light color, use a water–based poly.. To keep a partially filled can of oil–based poly from skinning over, cover the finish with this amount of mineral .