It’s at least almost always worth a try. as a BASF rep the answer is yes and no . Step 4. this makes the harder outer shell more prone to chip , lift , delaminate and so on . The 1:1 mix ratio makes it easy to mix (one part primer to one part catalyst). I got some Emerald Urethane and asked rep if I could spray directly over ASE. Latex primer is ideal for drywall, brick, concrete and previously painted metal and wood. So the lacquer paints cannot be sprayed on in a thick coat, or the product will not perform properly. They are urethane, enamel, and epoxy. 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. No sags. It's common to do custom paint in lacquer and coat with urethane, just not the other way around. It can be painted over enamel and is also very durable. #7 the none catalzed product moves (expands and contracts ) at a deferent rate than a catalzed product . You’ll have to prime, sand and use oil-based paint in order for your paint to stick to the finish of your wooden furniture. The only issue was Gloss became SG with this much thinning. That means it is sprayed over the top of epoxy primer and can be sanded down. Also, if the first coats are sprayed too heavily, the urethane can invade the artwork and possibly blur any crisp, clean edges. 2k primer should go over lacquer primer with NO problems. on your test with the lacquer and acetone they will remove some color off of enamel primers so that's not a good test. Can Lacquers be used over enamels? The enamel dried fine over the spar varnish but not over the epoxy were it stayed tacky for days and days, until I dragged the boat out into the hot summer sun for several days. Dupli-Color® enamels can be sprayed over lacquer substrates, or any other painted surface that has been sanded smooth and clean of dirt, grease, and dust. Although latex paint dries to the touch in a few hours, it can take up to 30 days to cure, depending on the color and thickness of the coating and the ambient temperature and humidity. Frequently asked questions about urethane primers Automotive undercoats, primers, sealer and body shop supplies available to order online. SO YES it can be doen . 611 Posts #7 • Mar 14, 2011. jIM i WOULDN,T THE OLD RULE OF THUMB YOU CAN PUT ENAMEL OVER LAQUER BUT YOU CANT PUT LAQUER OVER ENAMEL. This is especially true with enamel and urethane paints used over a lacquer-based paint or primer, since they are totally incompatible. Lacquer paints dry to a hard shell, leaving a very thin paint film. you can clear coat over acrylic enamel but no not for 24 hours and then and only then if you wet sand it 1st with a untra fine sand paper . Please keep in mind that we are comparing the products that are 2-part in rattle cans although it is not mentioned anywhere. Sprayed some gloss Emerald just for kicks on some old polyurethaned MDF shelves primed with BIN and man it came out good. You didn't say if the urethane is clear. All-purpose primers are acceptable for most applications. This primer offers excellent adhesion to bare metal and provides a proper foundation for your paint job. This is a test of Sherwin Williams Emerald Urethane paint. If acrylics, which can dry in an hour or less, are applied over uncured enamels they can seal in the solvents of the enamel. is there a jell coat on your fiberglass bumper? A polyurethane finish prevents other materials from adhering to its surface. Although urethane does offer the best finish, is industry standard, easier to apply, dries quicker and provides better coverage, it is more labour intensive than acrylic enamel. Urethane is also better than enamel paint, since it provides a good finish and doesn't run lines. Betty Taylor March 2, 2009 10:53 am Can I use spar urethane on my new wood floors? Be sure to follow me on Instagram https://www.instagram.com/caraddictgarage/ for quick updates. In the meantime, it’s important to talk to your paint dealer about the time window allowed between the primer and paint topcoat. Even if you don't use any other primer and are applying new paint over existing paint, it's important that you use a sealing primer to separate the two coatings. Some are a few hours; others allow several days. Acrylic enamel is the more traditional option that was used on older cars. First time I used it was over All Surface Enamel on a door (w/2 coats Bin). Can you paint urethane over enamel primer? High quality acrylic urethane paints should be sprayed with high volume, high pressure compressed air driven sprayers. if you do so with a metallic color you will sand off some of the metallics . 7 months of sitting in the sun, rain and dirt, looks like the day I … Enamels have solvents that need to outgas during the curing process which can take a couple of days to a week depending on the thickness of the paint to completely cure. These sprayers should have at least a 60 gallon compressed air tank in order to maintain high velocity air at regulated pressure. Lacquers have a tendency to lift enamel surfaces. when ever you apply a catalyzed product over a none catalyzed product such as lacquer and none catalyzed enamels . The pen is there so the camera could focus on something. After a series of experiments I discovered the 'enamel problem' happened when applied to epoxies containing nonyl phenol (most epoxies do - our Premium No Blush epoxy does not). Arcylic and enamels don't. Over the last year I have torn down my 69 RS and sanded the paint down to the metal. Looked perfect. This way it hides imperfections. but the best way is to remove the lacquer primer . Will have to experiment with it to see if I can retain full gloss. ... As a top coat, an enamel can be sprayed over anything but if you are using enamel as a base coat, you can only use enamel as its top coat. You can generally paint any oil based paint over any water based paint. Painting over polyurethane requires patience, time, and effort. It can even protect your furniture from ultraviolet rays, which is why it is commonly used in automobiles.Some urethane paints actually contain polyurethane, but the two are still very different. Urethane properly reduced is similar to enamel, but the high solids clear can be more viscous and need a different tip in the spray gun. The solvent used to thin enamel is called reducer, as it reduces the viscosity. I haven't posted in a very long time. I let it sit in the garage (like usual) but laid a towel over it to protect the finish from bugs, dust, etc. Use urethane paint, it forms a chemical bond with epoxy. Except for smell, alkyd and acrylic enamels sprayed the same to me. Barring some weird chemistry, the only problem I would see is: Is the water-based enamel so slick the oil-based paint won’t stick? Sprayed it. SprayMax, 2 Part (2K) Urethane Aerosol Clear Coat. Thinned it with about 30 percent water to get through a number 5 tip Graco4900 HVLP. Cheers, JC Yeah, I can get a mirror finish without the clearcoat - that is not the problem. Types. Reply. Urethane and acrylic enamel paints are most commonly used for auto body finishes. Pros of Using Urethane Car Paint Urethane paint can be sprayed over most paints, including lacquer. Then about 300 little pimples presented on each face of door. I also doubt it would be wise to mix Kirker Lazer Dry with S&W DIMENSION AE since that is what he stated to have bought in the first post and he also stated to have the product sheets. can spar urethane be sprayed over with lacquer with out a problem,also i am thinking toning a door then going over it with spar urethane will that work with outh a problem. This 2k urethane Clear Coat spray has a much higher U.V. Apart from this, urethane paint dries off quickly; it's resistant to chipping and doesn't fade easily. Enamel primer is the same as urethane primer, but is meant to go under enamal topcoats. Live Q&A - Can Enamel Paint be applied over lacquer paint? then, apply a medium to heavy coat, and finally a heavy coat. If I apply urethane paint over the enamel, ... spar urethane can be used over a water sealer. It's a different material and will very likely peel in a few years or less. I've been busy building stuff and testing out new paints. Yes. I wouldn't trust going over Rustoelum. The most common primers are latex and oil, available for interior and exterior use. It can’t be an epoxy primer, but it can be a urethane primer. I believe that Urethane paints are not allowed to be sprayed without a license in California. As I completed a section I would spray a light coat of self etch primer on the bare metal to protect it. I doubt it would be wise to use urethane hardener components from one brand manufacturer to the next manufacturer ie: 2k urethane primer hardener to mix with urethane clear coat from another brand. No, you don't want lacquer over urethane. It is usually not waterproof, so it is not a good topcoat. Always on the search for a great cabinet paint that can be sprayed and brushed. With acrylic enamel paint there are additional steps that need to be made in terms of adding a base coat and clear coat. Not be sprayed over most paints, including lacquer intent is you spray a coat,. 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