Will just some light sanding and reapplying a couple coats of straight poly be ok? The rattlecan finish was easy and cheap, but I would like something tuff. It was stained with a stain containing polyurethane. There is a problem with putting lacquer over poly. You can never reconstitute polyurethane once it has hardened. Be certain to work quickly adding a thin coat, but don't over-brush your work. Re: Stupid mistake - polyurethane and lacquer Poly over lacquer is ok, lacquer over poly won't work because the thinners are to hot and they will melt the poly. Lacquer vs. Polyurethane. It was fine, but I wasn’t impressed enough with it to use it again. Is it possible to spray a 2 part clearcoat (Poly/Urethane) over the acrylic lacquer, perhaps using some intermediate layer between them so there's no reaction. You can add additional coats later to even out the finish as needed. I proceed in the usual manner of sanding the wood to 320, then applying the General Finishes Seal a Cell as the first coat. Dullness. Spray lacquer is commonly used on new furniture and in new construction. Water-based oil-modified polyurethane is a relatively new product that combines the durability of an oil base with the cleanup of a water base. 1968 Coronet R/T ACTS 16:31. Lacquer. It will leave a sticky mess which won't every really dry. Minwax Polycrylic is junk, in my humble opinion. But it is a finish that has been used on furniture for a very long time so I wouldn’t really consider it an inferior finish. However, I can't guarantee that the NC lacquer will adhere to the well cured polyurethane. OldDupontGuy's Profile; E-mail OldDupontGuy; OldDupontGuy's Website; Top Contributor. The advantage of the water-based finish is ease of use, quick drying, no odor, and easy cleanup. You got it backwards. can you put epoxy resin over lacquer, Resin is an ill defined term and has been used for a wide range of substances. View Entire Discussion (6 Comments) More posts from the DIY community . (Age is the best indicator though, as sniffling for loss-y aromatics may not work all the time.) Can you use polyurethane over a lacquer finish on wood? What are cons and pros of each and in what scenario you should choose one over the other? Lacquer has a high VOC (volatile organic compound) content, which makes it dangerous to use without a respirator that has an organic vapor cartridge. A quick guide to wood finishes - what to use, and when to use them. Before you decide to go forward with the NC lacquer, you should know that if you ever want to apply another coating over it, such as a polyurethane, you will probably experience lifting. The lacquer will not bubble the poly. Poly, lacquer, waterbased poly…. You can't sand down laminate in order to get the polyurethane to stick, so there's no way to improve the cohesion between the two. You can see that a band saw is a band saw and not a table saw (even though both have a table) and that a mortise-and-tenon is not a dovetail. In contrast, woodworking is physics. We’ve answered the question can you apply water-based polyurethane over oil-based and we know that it’s okay to apply water-based poly can over oil-based provided that the surface of the application is in excellent condition bearing no dirt or grease. All have their pros and cons but when it comes to clear coat for automotive finishes polyurethane is state of the art for today at least. Answer + 1. See Answer. You can choose from polyurethane, lacquer, shellac, or even varnish. Hi, you can certainly use ASCP over Polyvine if you fancy a change of colour, no problem. If it really is tung oil, it won't work over lacquer or polyurethane. Polyurethane varnish is one of the best finishes for a countertop-- it's durable and, when applied properly, can be just as subtle as lacquer. I needed to just put a clear water-based polyurethane over the paint. Wiki User Answered . Many individuals use these terms interchangeably, but there is actually quite a difference between lacquer and polyurethane. In varnish making, resin can be a viscous liquid often derived from coniferous plants, such as balsam, or rosin. You can also find polyurethane in paints, foam cushions, and many other products as it provides strength while being durable and flexible. I understand that Polyurethane or Urethane clearcoats are more durable - harder and gasoline resistant than lacquer. When you spray lacquer over a solvent-based acrylic finish, they combine to form a hybrid film, even if the acrylic is pigmented to form a paint. Can you use polyurethane over lacquer on kitchen cabinets? Top. If you paint over it prematurely it could cause a reaction and I would never advise anyone to put a waterbased product over the top of a petrolium based product that hasn’t cured. Hi Mark, can you be more specific about what you want to put on top? Brush-on lacquer will dry quickly but is formulated to give you at least a little bit of time to apply and even out the finish. I'll stain it to match (oak) and then would like to put polyurethane on all the cabinets to give them a uniform appearance. Oil finishes tend to soak into the grain and yellow. Step 7 Run your hand over the frame during a "dry phase" to ensure that the surface is perfectly smooth. Some believe that a good quality shellac finish is just as good as any other finish out there, but those guys also happen to sell shellac so it’s hard to say. 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