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Can you put an oil based polyurethane over the top of water borne polyurethane?
Wiki User
∙ 12y ago
Yes, but the older finish must be completely dry before applying the new oil based top coat.
For furniture use fine steel wool to remove the glossy surface from the old finish to ensure proper adhesion between the two, oil and water based polyurethane. For hardwood floors it would be advisable to "screen" the floor with a buffer using 100 or 150 grit screens. You can rent a buffer for the short time it takes to screen a floor for around $40.00. Without roughing up the old poly the new poly will not have anything to grip and will begin to peel in a short time.
After you have vacuumed up the dust created by the screening process (for floors) wipe down the floors or furniture using mineral spirits or a solvent like denatured alcohol to clean the surface before you apply the finish. Use caution as both of these cleaning chemicals are extremely flammable.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agono
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Can you apply polyurethane over enamel paint?
You can apply "oil" based polyurethane over "oil" based enamel, you can also apply "water" based polyurethane over "water" based enamel, never mix the two, there's to much of a chance for problems.
Can polyurethane be sprayed over an item painted with acrylic paint?
Yes, both oil and water-based polyurethanes will adhere well to an item coated with acrylic paint. If it is a polyurethane paint, dull the surface prior to painting. If it is a clear. realize that that oil based polyurethane will impart an amber hue while a water based polyurethane is crystal clear and will not affect the color.
Can polyurethane go over oil base paint?
Yes, as long as the polyurethane is oil-based.
What are uses of Polyurethane?
Polyurethane is usually used over stained or unstained wood to protect it from water and damage. It is a sealer.
Why after spraying water based coating's there's bubbles coming out?
After you spray something with a water based coating you should spray over it with polyurethane. This will make the bubbles not come up and the surface you have just sprayed stay smooth.
Can you apply polyurethane floor paint over oil based floor paint?
Yes, you can.
Can you put oil based polyurethane over latex paint on wood book shelves to prevent marring?
I make it a habit never to mix water-based with oil-based, way to many problems occure. On the up note they have water-based poly, use that. Good-Luck
Do you need to apply wax over a polyurethane?
No, in fact the wax can ruin the polyurethane finish. Clean the floor with a good wood floor cleaner. Do not mop with water.
Can you use oil base polyurethane over latex paint?
Yes, you can use latex paint over poly but you have a few steps to do before you can apply it. First, whether the poly is oil or water based, you'll want to sand it to give it a tooth (something to grab onto). Make sure to wear a mask and goggles. Next, prime the surface you want to paint. You can fill any hole or fix imperfections over the primer but you'll have to prime those areas again if you do. After you're priming is done, you can roll out your paint. Quick note: if the poly is oil-based, I would use an oil based primer (Zinsser"s bin 1-2-3 oderless oil primer, white can with yellow flag on it). You can roll latex over this primer.
Can you use oil base polyurethane over water base stain on a sanded floor?
yes
Why does the oil based polyurethane can say not to use it over paint?
Because it will impart a yellow cast to the paint surface.
Can you put an oil based polyurethane over water based stain?
No you cant ,you should never ever put water base over anything except oil base primer and any other water base paints.If you put water base paint over anything that is oil based it will never ever stick it will peal.People will tell you you can do it but they are wrong its bad voodoo
