We do not recommend putting the epoxy over water-based polyurethane. The epoxy could cause the water-based polyurethane to wrinkle or soften. Also, Epoxy does not stick very well to water based polyurethanes and you could end up with fisheyes (epoxy pushing away from the surface)..
Similarly, you may ask, does epoxy stick to polyurethane?
The epoxy seal coat will not stick to an oil based stain or oil based paint. The polyurethane will cover that and allow the epoxy to stick. This does not take the place of the epoxy seal coat as that is still necessary. You will paint the epoxy on your surface just as you paint on a wall.
One may also ask, will epoxy stick to oiled wood? Inside the cracks and other defects the epoxy won't stick as well as it would to bare wood, however once cured drying oils aren't oils any longer so the bond won't be as terrible as one might expect. Long wait for the oil to fully cure though — a month at least!
In this regard, will oil based polyurethane stick to water based polyurethane?
Flooring wholesalers and veteran floor finishers agree that you can recoat water-based poly with oil-based as long as the original coating has completely cured—generally 30 to 60 days. You'll have to lightly buff the old finish with a power buffer to prepare it for the new polyurethane.
Can you pour on polyurethane?
To seal the wood before top coating, thin your oil-based polyurethane to one part mineral spirits and two parts polyurethane (first, gently stir the contents in the can). Pour the products into a glass jar and gently stir the mixture with a flat stir stick. NOTE: Never shake a can of polyurethane!
Related Question Answers
Is epoxy better than polyurethane?
POLYURETHANE FLOOR COATING BENEFITS Like epoxy, polyurethane is a thermosetting polymer as well and is considered a high performance coating. Aliphatic polyurethane has more flexibility than epoxy and it is this flexibility that aids in absorbing impacts better. It is also much more abrasion resistant.What does epoxy resin not stick to?
Epoxy resin adhesives will bond all woods, aluminum and glass well. It does not bond to Teflon, polyethylene, polypropylene, nylon, or Mylar. It bonds poorly to polyvinyl chloride, acrylic and polycarbonate plastics. The only way to tell if an epoxy will bond to a material is to try it.Can you apply epoxy with a brush?
Yes, epoxy resin can be used as a glue. In fact, it may be the strongest glue you will ever use! Mix and stir as usual, and apply as necessary with a brush or foam brush.What is the difference between epoxy and polyurethane?
The main operational differences between epoxy and polyurethane are:1. Epoxy floors are usually harder than polyurethanes, For Epoxy they have higher compressive and impact strength2. Polyurethane floors are usually softer and elastic. This gives them a better resistance and scratching.How thick can you pour epoxy resin?
Water-clear, high-gloss, low-viscosity, pourable epoxy resin lets you pour single layers up to 1″ thick for larger applications, and up to 2″ thick for smaller molds.How do you prepare wood for epoxy?
Surface Preparation - Clean. Epoxy bonding surfaces must be free of any contaminants such as grease, oil, wax or mold release. Clean contaminated surfaces with lacquer thinner, acetone or another appropriate solvent.
- Dry. All epoxy bonding surfaces must be as dry as possible for good adhesion.
- Sanded.
Is water based polyurethane as good as oil based?
Oil-based polyurethanes leave an amber glow and require fewer coats. Both water based and oil based poly offer good protection; the biggest difference is in appearance. It's actually the most durable hardwood floor finish. If you love the natural look of maple, apply a water-based (waterborne) polyurethane.Is water based polyurethane waterproof?
Yes, polyurethane provides a protective layer on hardwood (as well as furniture) making it harder for water to penetrate into the wood. But, it is not waterproof; rather, it's water resistant.What will remove water based polyurethane?
Pour equal parts of lacquer thinner and denatured alcohol into a small empty paint can. Mix with a wooden stir stick, scraping into the mixture any lacquer from the base and sides of the can.What is water based oil modified polyurethane?
Minwax® Water Based Oil-Modified Polyurethane combines superior durability and the warm look of traditional polyurethane with the convenience of a water-based finish. Lower in odor than traditional solvent-based polyurethanes. Cleans up easily with warm water.Is oil based polyurethane more durable than water based?
Oil based polyurethane lasts longer than water based. There is no contest on the durability between the 2 options. Water based polyurethane has lower VOC's - which is a bit of an environmental benefit (more about that in a moment) - but because it has lower VOC's (Volatile Organic Compounds), it doesn't last as long.Is oil based stain better than water based?
Oil-based stains are not easily penetrated by the elements. Oil-based stains dry more slowly than water-based stains and thus maintain a more even finish. Oil-based stains are far more durable than water-based stains and thus require far less maintenance.How do you use water based varnish?
Apply Water-Based Poly With a Pad Water-based poly dries faster than oil, so it's even harder to brush over a big surface. The solution is a paint pad, which applies poly fast and smooth. Just dip the pad into a pan of poly and drag the pad across the surface.How do you apply water based polyurethane over stain?
Applying a Water-Based Polyurethane Water-based polyurethanes don't match well with oil-based stains, so if you're applying over stain you'll want to "rough up" the stained surface slightly before applying your water-based polyurethane, using some synthetic steel wool.Do you have to seal wood before epoxy?
Epoxy can give wood a waterproof, resilient finish. However, there are some cases where it is not advisable to use epoxy as a finish, but you can still get the benefits of epoxy by using it as a sealer before applying your finish coat.What does epoxy do to wood?
Epoxy is the perfect material to make permanent repairs of rotting window sills, door jambs and exterior molding that are difficult to remove and expensive to replace. Epoxy is easy to handle too. You mix it like cookie dough, mold it like modeling clay and, when it hardens, you carve and sand it just like wood.Do you sand between coats of epoxy?
Then you'll begin sanding epoxy resin between coats. Sanding epoxy isn't hard, but you'll want to be thorough! Sand the entire piece evenly. It will look terrible when you finish sanding it, but don't worry.What kind of epoxy should I use on wood?
Pro Marine Supplies is the best epoxy resin that I used. This epoxy contains no VOCs and provides great coverage. Also, Pro Marine cures harder and more quickly than most epoxy resins. When it comes to creating a beautiful wooden table top, the epoxy resin is off the charts, period.Can you put epoxy over shellac?
You can certainly do this but don't have to. You want to seal the wood regardless, either with a brushed on layer of epoxy or probably several layers of shellac. This will dramatically help with air bubbles when it comes to the pour. Yes. 
