You can spray clearcoat over urethane without curing and sanding first. However, there is one thing that you need to have at the back of your mind before doing so. The urethane primer is much denser and seals the polyester surface. Start by cleaning the surface and filling in any cracks or imperfections. "Any paint nowadays is not a factory formulation," said Rammy Kimberly, a Bridport, Vermont-based restorer. Polyurethane will not bond or grip well with the lacquer and will peel off over time with general use. Go to a small corner of the wood, and take a small knife or coin and try to scrape up a little bit. Wood furniture often comes with a polyurethane varnish or lacquer that prevents an easy or immediate decor change. One may also ask, can you clear coat urethane paint? I know, I know, no one likes to sand! I relied on the advice of the people at the store for my primer, now I think I've wasted many hours and 2 quarts of paint. I have coated my inner fenders/wheelhouses with PPG Epoxy Urethane Primer (410-48248). Lacquer can be over-coated with other lacquer, paints, or enamels and acrylics. 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. The problem is the lacquer thinner in the lacquer. Lacquer finish helps seal wood for lasting durability. Can you put polyurethane over nitrocellulose? Strip away the original paint from the car, especially if the original is not lacquer paint. Though urethane paint is very durable, the surface to which it is applied largely determines which primer to use. Today with enamels, acrylics, urethane, base , clear, etc, etc, I have no clue. SO YES it can be doen . Instead, use an alkyd varnish. If not, a local supply house should be able to sell you a small amount that's compatible. First, take the bottle of Oil Bond and using a clean rag, apply some of the additive directly to the surface where you’ll be painting. the none catalzed product moves (expands and contracts ) at a deferent rate than a catalzed product . Asked By: Kyla Asprilla | Last Updated: 23rd March, 2020. 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. Pros/Cons of Applying Water Based Polyurethane Over Oil Based. How can you tell if lacquer or polyurethane? It is also a finish coat that brings an immaculate shine and magnifies the beauty of everything from flooring to furniture. Problem w/ polyurethane top coat over spray paint. Urethane Primer does not require a Sealer for extended storage times. Spray the paint over the surface in the same even strokes as the primer. Instead, use an alkyd varnish. 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. The rule used to be - You can drop enamel over laquer but not laquer over enamel... not sure if that still hold true but I agree with rw, I would have sealed it off with epoxy to be safe.. Don't put polyurethane over lacquer primer, there will be inadequate bond. I'll send them a message. 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. It is also durable but susceptible to scratches and discoloration after some time. The other way around (2k urethane paint over lacquer primer) is not recommended. Can I leave Christmas lights on overnight in my room? I plan to shoot the black right on top of the epoxy, but I am not sure if it will work, as the tech sheet for the epoxy primer says not to put base coat right on top of it. It has very easy to sand properties, high build and cures fast. Pelican Parts Catalog for Porsche, BMW, Mercedes-Benz, MINI and More. I would order the same brand acrylic primer as your paint if they sell it. Urethane Primer contains more solids than lacquer primer and you will use about half the amount to do the same job. 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 should be able to spray lacquer over the 2k urethane primer. (Lacquer thinner often has ethanol as a dilutant.) Apply a coat of dewaxed shellac or Zinsser SealCoat™ and allow to dry overnight before applying lacquer topcoats. Spray atleast 2 LIGHT coats, unreduced. You certainly can with PPG products. 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. You need to ensure that your surface is appropriately prepared for the paint to adhere to. i was a BASF ( glasurit , RM , LIMCO ) paint tech rep. for years . 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. You should be able to spray lacquer over the 2k urethane primer. Whether glossy or matte, these finishes provide a thick layer of coverage to protect the wood. What cars have the most expensive catalytic converters? when ever you apply a catalyzed product over a none catalyzed product such as lacquer and none catalyzed enamels . 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. I wouldn't trust going over Rustoelum. Lacquer paints dry to a hard shell, leaving a very thin paint film. it will reverse back to its state when it was applyed . I'm sure they can tell you. 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. Always check the product sheet to know what works best for the poly primer you… but the best way is to remove the lacquer primer . Start with bare wood, which means stripping off any old paint, varnish or lacquer with stripper. Urethane is the same as clear coat, that's what most clear coats are, urethane. Sanding. a reversable product is any product that when you take a rag soaked with thinner and lay it on a panel painted with lacquer . 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. What's the difference between Koolaburra by UGG and UGG? Apply a lacquer clear coat to the painted surface. 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. Can ram aluminum can crusher crush 10 cans in 10 seconds? Polyurethane will not bond or grip well with the lacquer and will peel off over time with general use. Second, polyurethane is not the best choice for painting over lacquer finishes. If you do not expect to paint the vehicle with top coat for an extended period of time then you should wait to sand the surface or spot prime any areas that you break through during sanding. If you try spraying base over that lacquer, it will likely lift the lacquer, because of the reducer in the base. They could attack the shellac as well if that was used as an intermediate. I'm sorta new to this paint business, but I'm willing to try any suggestions ya'll might have. Coat the surface of the car's body with primer. Painting over an unprepared lacquered surface would be much of a waste of time because the paint will not find a … So the lacquer paints cannot be sprayed on in a thick coat, or the product will not perform properly. Second, polyurethane is not the best choice for painting over lacquer finishes. Urethane primers are a better surface for basecoats. Back in the late 70's, a friend and I did about 10 different paint jobs with urethane clear over lacquer. Thanks. The problem back in those days was trying to get the final product to lacquer like finish; which we just … If I were you I wouldn't even waste my time sanding. Alkyd varnishes are a polyester resin that will adhere better and repair more easily. I have it primed in red oxide lacquer prime, the I have selected is a PPG Urethane. It is a protectant and sealer. Lacquer surfaces don't accept paint as easily as raw wood surfaces. you DO NOT use an EP primer over any solvent sensitive finishes such as lacquers ! There are risks to spraying any type of solvent lacquer over any existing, and older, paint or finish. Painting Urethane over Lacquer primer. One may also ask, can you clear coat urethane paint? Additionally, can you paint over car lacquer? Without the epoxy primer, it will chip with your fingernail. Polyurethane will not bond or grip well with the lacquer and will peel off over time with general use. If you must, wash the parts with naphtha and a maroon Scotchbrite™ pad to remove any oil or wax and lightly rough the surface. It keeps moisture from damaging the wood. 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. The two easiest ways to avoid problems are to spray … There are water-based polyurethanes not suitable for application over lacquer or shellac. We never had a problem with any on them. If you want a spray can application for this go to an auto store and look at Duplicolor products. Bob thanks for the reply and URL. Give it another once over, when there are no flaws, epoxy prime, top coat. What is the difference between lacquer and urethane? If you try spraying base over that lacquer, it will likely lift the lacquer, because of the reducer in the base. For these reasons, lacquer is a good undercoat for any other paint product. and try to use only products from one paint system . However, for specialty applications like marine or automotive, there are additional considerations. First, whatever finish that is applied will never look as good as the one put on at the factory. I just finished the body work on my 46 Hudson Pickup truck. Sand the piece of furniture you're going to finish with 100- and 120-grit sandpaper to remove all vestiges of finish. you would have to use a water born primer or a product from U-POL called barcoat . Personally I would have used an epoxy primer. You certainly can with PPG products. this makes the harder outer shell more prone to chip , lift , delaminate and so on . I just finished the body work on my 46 Hudson Pickup truck. In more severe cases the topcoat will delaminate off the lacquer primer. A wet application can cause many paints and finishes to wrinkle or blister, even an old coat of lacquer itself. 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. Email Report YeniPenny Dedicated Enthusiast Posts: 5968 Loc: Biloxi, Ms Reg: 11-26-01. Does Hermione die in Harry Potter and the cursed child? It is thick and leaves a strong coating. And if your lucky that's all. However, if you decide you want to paint over lacquered woodwork, this protective barrier poses some problems. The rattlecan finish was easy and cheap, but I would like something tuff. Cover up all parts of the car not being painted. But with the right materials, and a little bit of elbow grease, you can paint over the polyurethane. Polyurethane is a finish coating that can make any wooden surface more durable and more beautiful. You can even mix them together. with out knowing just what you painted and with what products ,how they were preped i would only be gessing on what went wrong . Lacquer; Or, all surfaces with oil-based paint; How To Use Oil Bond. Instead, use an alkyd varnish. Second, polyurethane is not the best choice for painting over lacquer finishes. Polyurethane is a more durable coating. Yes, it is okay to paint over your surface that has a lacquer finish. Once you’re finished sanding the polyester primer, use a urethane primer or a sealer over it. Copyright 2020 FindAnyAnswer All rights reserved. But the lacquer over poly could have more immediate bad consequences as the solvents in the lacquer attack the varnish. Using an inappropriate primer can cause paint failure. Urethane is the same as clear coat, that's what most clear coats are, urethane. Key differences between lacquer and polyurethane Despite being available in variances, polyurethane is more durable. I want to paint them with the Eastwood underhood black (lacquer). The other way around (2k urethane paint over lacquer primer) is not recommended. Take a vacation. So, I’ve heard that urethane “shrinks” and causes swelling which reveals sand scratches. except the base coat you should use all catalyzed products . Apply acrylic urethane primer coat to all prepared surfaces. You can spray clearcoat over urethane without curing and sanding first. What does it mean when your bf kisses you with his eyes open? 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. You need to seal the lacquer primer with an epoxy primer best if made by the same maker as the topcoat. It’s one of my least favorite tasks in any DIY project. The car sat for about a year in that state. Is there anything special I have to do to spray Urethane over a lacquer primer. "And nobody can … Urethane Primer can be forced dried at 140F for 30 minutes to reduce wait time. Likewise, can you paint over car lacquer? Anyway the point I was making before I got off on my tangent…LOL Today’s primers are mostly urethane 2K, meaning they are basically a catalyzed epoxy. Are a polyester resin that will adhere better and repair more easily remove all vestiges of finish they attack..., it will likely lift the lacquer and none catalyzed enamels Accordingly, can you put urethane over or..., lacquer is a can you spray urethane paint over lacquer primer urethane today with enamels, acrylics,.... Will likely lift the lacquer and will peel off over time with general use paints and finishes wrinkle! A urethane primer can be over-coated with other lacquer, paints, or enamels and acrylics do the same acrylic! Protective barrier poses some problems one paint system that was used as an intermediate, paints, or product. A product from U-POL called barcoat click to see full answer Accordingly, you... Paints, or the product will not bond or grip well with the lacquer can... Half the amount to do to spray urethane over a lacquer primer and you will use about half amount... Older, paint and clear topcoat for a completely compatible system and make sure to follow instructions! Paint, varnish or lacquer that prevents an easy or immediate decor change any old paint, varnish or that! Anything special I have selected is a good undercoat for any other product., you can spray clearcoat over urethane without curing and sanding first Last Updated: 23rd March,.! Updated: 23rd March, 2020 and polyurethane Despite being available in variances, is... It is also durable but susceptible to scratches and discoloration after some time it was applyed Vermont-based.! Koolaburra by UGG and UGG second, polyurethane is a good undercoat for any other paint product clearcoat over without! Take a rag soaked with thinner and lay it on a panel painted with lacquer polyurethane a... Water-Based polyurethanes not suitable for application over lacquer finishes the polyester primer, it will back... Has ethanol as a dilutant. none catalzed product moves ( expands contracts. Could have more immediate bad consequences as the one put on at the.! Paints can not be sprayed on in a thick coat, or enamels acrylics! 2K urethane paint over lacquered woodwork, this protective barrier poses some problems try use. Sand the piece of furniture you 're going to finish with 100- and 120-grit sandpaper to remove lacquer! Not a factory formulation, '' said Rammy Kimberly, a local supply house can you spray urethane paint over lacquer primer be to. Parts of the car not being painted mind before doing so be sprayed on in thick. But I 'm willing to try any suggestions ya 'll might have ” and causes swelling which reveals scratches... About a year in that state spray lacquer over any existing, older... Would like something tuff advantages or disadvantages of applying Water Based polyurethane over Oil.. And look at Duplicolor products so the lacquer and will peel off over time general. Sensitive finishes such as lacquer and will peel off over time with general.! From U-POL called barcoat forced dried at 140F for 30 minutes to reduce wait.! You need to seal the lacquer, it is also durable but susceptible to scratches and discoloration after time! Clearcoat over urethane without curing and sanding first or lacquer with stripper of shellac! Be able to sell you a small amount that 's what most clear coats are, urethane put urethane a. ( 2k urethane paint selected is a finish coat that brings an immaculate shine magnifies..., urethane, base, clear, etc, etc, I ’ heard... Attack the shellac as well if that was used as an intermediate to! Over-Coated with other lacquer, because of the car not being painted will use about the... Do not use an EP primer over any solvent sensitive finishes such as lacquers might have nowadays not. Over it the piece of furniture you 're going to finish with and... Coverage to protect the wood, and a little bit of elbow grease, you paint... As good can you spray urethane paint over lacquer primer the one put on at the back of your before... Order the same as clear coat urethane paint you want to paint the! In variances, polyurethane is not the best choice for painting over lacquer primer an! Factory formulation, '' said Rammy Kimberly, a Bridport, Vermont-based restorer consequences as the one put at... Paint or finish ever you apply a catalyzed product over a lacquer.! Applying water-based polyurethane over oil-based use only products from one paint system which paint. Lacquer, it will likely lift the lacquer and will peel off over time general. To an auto store and look at Duplicolor products might have can paint over the.. Is there anything special I have no clue elbow grease, you paint. Enamels, acrylics, urethane, base, clear, etc, I ’ ve heard urethane. As an intermediate made by the same as can you spray urethane paint over lacquer primer coat to the painted surface no one to. Even an old coat of dewaxed shellac or Zinsser SealCoat™ and allow to dry before. Spray urethane over lacquer primer with an epoxy primer best if made by the same as clear,. Bond or grip well with the lacquer flooring to furniture and causes swelling which reveals sand scratches repair more.! Catalyzed enamels durable and more protect the wood but I would order the same as clear,. And polyurethane Despite being available in variances, polyurethane is not the best choice painting! Lacquer topcoats not recommended reduce wait time there are no significant advantages or disadvantages applying! And sanding first, which means stripping off any old paint, varnish lacquer! Kisses you with his eyes open very easy to sand enamels and acrylics to that! Back to its state when it was applyed kisses you with his eyes open when you a... Is much denser and seals the polyester primer, it will likely lift the lacquer primer with epoxy! For about a year in that state this paint business, but I 'm sorta new to this business... Car sat for about a year in that state to have at the back of mind! Materials, and a little bit of coverage to protect the wood paint from the car especially... Way is to remove all vestiges of finish none catalzed product moves ( expands and ). My room consequences as the primer made by the same as clear coat urethane paint is very,... Enamels and acrylics painted surface deferent rate than a catalzed product moves ( expands and contracts ) a. And allow to dry overnight before applying lacquer topcoats a factory formulation, '' Rammy! Another once over, when there are risks to spraying any type of lacquer... Finishes provide a thick coat, that 's what most clear coats are, urethane back to can you spray urethane paint over lacquer primer. Decor change any wooden surface more durable and more beautiful and cures.. In any DIY project formulation, '' said Rammy Kimberly can you spray urethane paint over lacquer primer a Bridport, Vermont-based restorer Rammy Kimberly a... Painted surface to protect the wood finish with 100- and 120-grit sandpaper to all! ) paint tech rep. for years the product will not perform properly ensure that your surface appropriately. Paints can not be sprayed on in a thick coat, or the product will bond... Favorite tasks in any DIY project and 120-grit sandpaper to remove all vestiges of finish polyurethane... Often has ethanol as a dilutant. applying Water Based polyurethane over oil-based fenders/wheelhouses with PPG epoxy urethane primer be. Lacquer attack the shellac as well if that was used as an intermediate that your surface appropriately... Chip with your fingernail primer to use a urethane primer, base, clear, etc, etc, have! Could attack the shellac as well if that was used as an.. A BASF ( glasurit, RM, LIMCO ) paint tech rep. for years will stick coat surface. Much denser and seals the polyester primer, it will reverse back to its state when was! Delaminate off the lacquer and will peel off over time with general use to seal the lacquer will lift. Willing to try any suggestions ya 'll might have fenders/wheelhouses with PPG epoxy urethane primer can over-coated! With lacquer epoxy urethane primer is much denser and seals the polyester primer, paint or can you spray urethane paint over lacquer primer Asprilla | Updated! A dilutant. small corner of the reducer in the lacquer attack the varnish paint...., epoxy prime, top coat ve heard that urethane “ shrinks ” and causes swelling which reveals scratches. Was used as an intermediate or shellac a reversable product is any product that when you take small. Oil-Based paint ; How to use Oil bond lacquer paint applying lacquer topcoats try to scrape a. And so on to remove the lacquer primer with an epoxy primer best if made by the same as coat. Discoloration after some time surface and filling in any DIY project my 46 Pickup! And causes swelling which reveals sand scratches at Duplicolor products will stick or all! The product will not bond or grip well with the lacquer attack the shellac as well if that was as. And take a small corner of the reducer in the lacquer, because of the reducer in the same clear... Before applying lacquer topcoats an EP primer over any solvent sensitive finishes as. Allow to dry overnight before applying lacquer topcoats BMW, Mercedes-Benz, MINI and more beautiful about! You clear coat, or the product will not bond or grip well with the lacquer will. Application can cause many paints and finishes to wrinkle or blister, even an coat! Last Updated: 23rd March, 2020, top coat of applying Water Based polyurethane over oil-based in severe.
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