Can You Use Water Based Polyurethane Over Oil Based Stain
Camila Farah
And actually the answer is yes you can use our emtech water based sealer or top coat over the oil stain.
So there s no need to go oil on oil simply because your stain is oil based. You should never put a water based finish on top of an oil based finish. Wiped stain thoroughly waited 60 hours before attempting to apply minwax water based oil modified polyurethane using synthetic bristle brush. If you are wiping or brushing on the water base over the oil stain a sprayed on sealer or shellac will lock in the stain before the brushed or wiped on wb coating.
It s possible to use a waterbased polyurethane over an oil stain if the stain is completely dry and has thoroughly gassed off. You can apply water based polyurethane over oil based as long as you set suitable conditions for this to happen effectively. Then you can apply the polyurethane. This is because the curing process for oil is polymerisation and polymerised oil is akin to resin.
Minwax says that you should wait at least 24 hours before topcoating the oil stain with the clear finish but a full day after i applied varathane ultimate spar water based polyurethane to the seat board of a bay window i was horrified to see that the water based poly had not adhered to the stained wood beneath. All of this is exactly as per instructions on products. You can also use mineral spirits. Water based over oil based.
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Please use the following guidelines. Another method that you might want to try is to wipe or brush in only one directions instead of back and forth then allow the coating to dry. When using a water based topcoat over an oil based stain allow oil based finishes such as java gel stain to dry at least 72 hours before coating with a water based topcoat. If you wait for the oil based stain to properly dry cure it s no longer oily.
It is a better choice to apply a barrier coat like zinsser sealcoat which is dewaxed shellac between thew stain and topcoat. Ensure that you remove dirt grease and wax from the surface by scrubbing the surface using a wood cleaner or de glosser. You may apply the minwax water based polyurethane over a fully cured minwax wood finish stain oil based. Can i apply water based polyurethane over an oil based stain.
Jim carroll explains why it s not only acceptable to use a water based finish over and oil finish provided you do it correctly but that it can be the best solution when you want to bring out the natural character and color of the wood. Oil based over water based.
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