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Yes, I just did it last week. If it's for outdoors, make sure to put 2 to 3 coats of poly on it. I recommend Minwax Helsman Spar Urethane.

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Q: Can you put polyurethane over thompsons water sealer?
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Related questions

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.


Can you apply a drying oil over a polyurethane that is not drying tacky I have stained a crib and have sprayed polyurethane over to seal but the poly is still tacky a week later?

Drying conditions of certain paints and sealers can be critical. Read the directions on the can. Sometimes the manufacturer will specify a certain temperature range and/or humidity level for the paint or sealer to properly dry and harden. You may have exceeded the time range for the polyurethane and it may be best for you to remove the sealer and start over. Make sure it's warm enough and that your humidity level is low enough then the sealer should dry properly. Good luck.


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 you put thompsons water seal over a flat paint?

Civialian Conservation Corp


Can you put water base sealer over oil base sealer?

if you put a oil base floor sealer over water base you will find the top coat will flake and peal off your new floor. You need to wait 30 days before applying the oil base sealer to reduce your chances of peeling.


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 water base stain on a sanded floor?

yes


Shellac over polyurethane?

A coat of shellac can be placed over polyurethane. You should use de-waxed shellac if you plan on placing more polyurethane on in the future.


Can you stain over Thompsons waterseal?

I've never tried that as it's not generally done. Staining is usually done before sealing.You'll have to remove the Thompson's before you stain unless it has been long enough that the Thompson's is no longer effective. To test to see if the surface will take stain, spray some water on it. If it beads up, it will not accept a stain.


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 you put polyurethane over eggshell paint?

Yes, you can put polyurethane paint over eggshell in latex or eggshell in oil.


Can you use water based paint over Beauti-Tone fast dry primer sealer?

Yes, you can.