If you really want to paint over it, which I don't suggest, your best bet is to spray epoxy over it as a sealer. You certainly can with PPG products. Urethane primers are a better surface for basecoats. Wood furniture often comes with a polyurethane varnish or lacquer that prevents an easy or immediate decor change. First off, any paint, whether acrylic enamel, nitrocellulose lacquer or a clearcoat urethane, will not be totally authentic to the car as it left the assembly line. It is also durable but susceptible to scratches and discoloration after some time. In order for the acrylic urethane finish coats to properly bond to the painted surface, acrylic urethane prime coats should be applied according to the manufacturer's instructions. Painting over an unprepared lacquered surface would be much of a waste of time because the paint will not find a … Give it another once over, when there are no flaws, epoxy prime, top coat. Polyurethane can be oil- or water-based, and you can use either kind over latex paint; however, oil-based polyurethane tends to yellow as it ages, whereas water-based varieties stay transparent. They could attack the shellac as well if that was used as an intermediate. Is there anything special I have to do to spray Urethane over a lacquer primer. You cannot put anything catalyzed (poly, urethane, etc) over lacquer b/c the lacquer has no catalyst & therefore will be "reflowed" when the hot reducers & catalyst hits it.....resulting in a list of potential problems. Pelican Parts Catalog for Porsche, BMW, Mercedes-Benz, MINI and More. You need to seal the lacquer primer with an epoxy primer best if made by the same maker as the topcoat. Lacquer; Or, all surfaces with oil-based paint; How To Use Oil Bond. My plan is to cover that primer with an epoxy primer (as a sealer) then spray the can with another polyester or urethane primer, then block it down to 600-grit before I spray base clear. If you try spraying base over that lacquer, it will likely lift the lacquer, because of the reducer in the base. You can spray clearcoat over urethane without curing and sanding first. You can rub a rag soaked with enamel reducer all day over top a lacquer finish and it won’t hurt it but take a rag full of lacquer thinner over an enamel painted surface and see what happens. I have coated my inner fenders/wheelhouses with PPG Epoxy Urethane Primer (410-48248). Thanks. Second, polyurethane is not the best choice for painting over lacquer finishes. Coat the surface of the car's body with primer. Today with enamels, acrylics, urethane, base , clear, etc, etc, I have no clue. Lacquer finish helps seal wood for lasting durability. Polyurethane is a more durable coating. However, for specialty applications like marine or automotive, there are additional considerations. For these reasons, lacquer is a good undercoat for any other paint product. Start with bare wood, which means stripping off any old paint, varnish or lacquer with stripper. The two easiest ways to avoid problems are to spray … If it doesn't work, your budget just doubled, and your hours just tripled since you now need to strip it again to start all over. We never had a problem with any on them. Whether glossy or matte, these finishes provide a thick layer of coverage to protect the wood. The other way around (2k urethane paint over lacquer primer) is not recommended. a reversable product is any product that when you take a rag soaked with thinner and lay it on a panel painted with lacquer . Bob thanks for the reply and URL. It’s one of my least favorite tasks in any DIY project. Sand the piece of furniture you're going to finish with 100- and 120-grit sandpaper to remove all vestiges of finish. also becouse the softer reverseable lacquer is on the underside of a harder shell the other down side is a good chance of shrinkage and ringing out . The urethane primer is much denser and seals the polyester surface. You can spray clearcoat over urethane without curing and sanding first. If you really want to paint over it, which I don't suggest, your best bet is to spray epoxy over it as a sealer. Instead, use an alkyd varnish. Can ram aluminum can crusher crush 10 cans in 10 seconds? You should be able to spray lacquer over the 2k urethane primer. Always check the product sheet to know what works best for the poly primer you… One may also ask, can you clear coat urethane paint? First, whatever finish that is applied will never look as good as the one put on at the factory. I want to paint them with the Eastwood underhood black (lacquer). but the best way is to remove the lacquer primer . It is thick and leaves a strong coating. Problem w/ polyurethane top coat over spray paint. SO YES it can be doen . with out knowing just what you painted and with what products ,how they were preped i would only be gessing on what went wrong . But the lacquer over poly could have more immediate bad consequences as the solvents in the lacquer attack the varnish. Instead, use an alkyd varnish. except the base coat you should use all catalyzed products . You should be able to spray lacquer over the 2k urethane primer. Spray atleast 2 LIGHT coats, unreduced. Spray the paint over the surface in the same even strokes as the primer. What does it mean when your bf kisses you with his eyes open? A polyurethane finish or varnish is a durable coating that protects a wooden surface, which means you can’t paint directly over it or your paint won’t adhere to it. It is also a finish coat that brings an immaculate shine and magnifies the beauty of everything from flooring to furniture. the none catalzed product moves (expands and contracts ) at a deferent rate than a catalzed product . Using an inappropriate primer can cause paint failure. I'm no bodyman, but what I learned is epoxy primer, filler, sand, high build primer/filler, wet sand, prime, sand, prime, sand, prime until you can't fucking stand it anymore. What is the difference between lacquer and urethane? Just like most protective topcoats, such as polyurethane or varnish, a topcoat of, Color sanding and polishing was invented on, Enamel paints come in wider variety of colors and. I know, I know, no one likes to sand! We recommend you use the MP-2K Urethane Primer. Lacquer surfaces don't accept paint as easily as raw wood surfaces. If I could answer him would I'd answer him knowing only that there was a rule back in the day that said you can enamel over lacquer but not the other way around. Lacquer is thin and penetrates the wood surface. I used nason 2k etch primer, but I think I was supposed to use urethane or lacquer primer now that I'm looking at the product sheets. Instead, use an alkyd varnish. "And nobody can … Yes, it is okay to paint over your surface that has a lacquer finish. The problem back in those days was trying to get the final product to lacquer like finish; which we just … The other way around (2k urethane paint over lacquer primer) is not recommended. The car sat for about a year in that state. However, if you decide you want to paint over lacquered woodwork, this protective barrier poses some problems. If you try spraying base over that lacquer, it will likely lift the lacquer, because of the reducer in the base. ; How to use a Water born primer or a product from U-POL called barcoat wood and! And you will use about half the amount to do the same job with. Not lacquer paint the polyurethane paint system risks to spraying any type can you spray urethane paint over lacquer primer! Reg: 11-26-01 should use all catalyzed products will peel off over time with general use can you spray urethane paint over lacquer primer this. 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