Urethane Primer does not require a Sealer for extended storage times. Personally I would have used an epoxy primer. Without the epoxy primer, it will chip with your fingernail. Lacquer finish helps seal wood for lasting durability. Pelican Parts Catalog for Porsche, BMW, Mercedes-Benz, MINI and More. 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. Problem w/ polyurethane top coat over spray paint. this makes the harder outer shell more prone to chip , lift , delaminate and so on . 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. How can you tell if lacquer or polyurethane? Lacquer is thin and penetrates the wood surface. You can spray clearcoat over urethane without curing and sanding first. 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. Email Report YeniPenny Dedicated Enthusiast Posts: 5968 Loc: Biloxi, Ms Reg: 11-26-01. Polyurethane will not bond or grip well with the lacquer and will peel off over time with general use. Apply acrylic urethane primer coat to all prepared surfaces. There are risks to spraying any type of solvent lacquer over any existing, and older, paint or finish. Alkyd varnishes are a polyester resin that will adhere better and repair more easily. 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. I have coated my inner fenders/wheelhouses with PPG Epoxy Urethane Primer (410-48248). Take a vacation. Lacquer can be over-coated with other lacquer, paints, or enamels and acrylics. Polyurethane is a more durable coating. you DO NOT use an EP primer over any solvent sensitive finishes such as lacquers ! First, whatever finish that is applied will never look as good as the one put on at the factory. Using an inappropriate primer can cause paint failure. 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. Second, polyurethane is not the best choice for painting over lacquer finishes. The other way around (2k urethane paint over lacquer primer) is not recommended. This will lay a first layer of velcro-like surface on which the paint will stick. Give it another once over, when there are no flaws, epoxy prime, top coat. Lacquer surfaces don't accept paint as easily as raw wood surfaces. "Any paint nowadays is not a factory formulation," said Rammy Kimberly, a Bridport, Vermont-based restorer. Today with enamels, acrylics, urethane, base , clear, etc, etc, I have no clue. Urethane primers are a better surface for basecoats. I'll send them a message. So the lacquer paints cannot be sprayed on in a thick coat, or the product will not perform properly. You should be able to spray lacquer over the 2k urethane primer. Though urethane paint is very durable, the surface to which it is applied largely determines which primer to use. If I were you I wouldn't even waste my time sanding. 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. What does it mean when your bf kisses you with his eyes open? Key differences between lacquer and polyurethane Despite being available in variances, polyurethane is more durable. It is thick and leaves a strong coating. and try to use only products from one paint system . You can spray clearcoat over urethane without curing and sanding first. Asked By: Kyla Asprilla | Last Updated: 23rd March, 2020. One may also ask, can you clear coat urethane paint? with out knowing just what you painted and with what products ,how they were preped i would only be gessing on what went wrong . I want to paint them with the Eastwood underhood black (lacquer). What is the difference between lacquer and urethane? I just finished the body work on my 46 Hudson Pickup truck. Back in the late 70's, a friend and I did about 10 different paint jobs with urethane clear over lacquer. Urethane is the same as clear coat, that's what most clear coats are, urethane. If not, a local supply house should be able to sell you a small amount that's compatible. Urethane is the same as clear coat, that's what most clear coats are, urethane. You certainly can with PPG products. SO YES it can be doen . Always check the product sheet to know what works best for the poly primer 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. I just finished the body work on my 46 Hudson Pickup truck. There are water-based polyurethanes not suitable for application over lacquer or shellac. I'm sorta new to this paint business, but I'm willing to try any suggestions ya'll might have. But the lacquer over poly could have more immediate bad consequences as the solvents in the lacquer attack the varnish. There are no significant advantages or disadvantages of applying water-based polyurethane over oil-based. We recommend you use the MP-2K Urethane Primer. Instead, use an alkyd varnish. The car sat for about a year in that state. The urethane primer is much denser and seals the polyester surface. the none catalzed product moves (expands and contracts ) at a deferent rate than a catalzed product . In more severe cases the topcoat will delaminate off the lacquer primer. Second, polyurethane is not the best choice for painting over lacquer finishes. It is also a finish coat that brings an immaculate shine and magnifies the beauty of everything from flooring to furniture. It has very easy to sand properties, high build and cures fast. I know, I know, no one likes to sand! you would have to use a water born primer or a product from U-POL called barcoat . What cars have the most expensive catalytic converters? Polyurethane will not bond or grip well with the lacquer and will peel off over time with general use. except the base coat you should use all catalyzed products . Wood furniture often comes with a polyurethane varnish or lacquer that prevents an easy or immediate decor change. 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 . a reversable product is any product that when you take a rag soaked with thinner and lay it on a panel painted with lacquer . However, there is one thing that you need to have at the back of your mind before doing so. I would order the same brand acrylic primer as your paint if they sell it. Once you’re finished sanding the polyester primer, use a urethane primer or a sealer over it. 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. But with the right materials, and a little bit of elbow grease, you can paint over the polyurethane. The rattlecan finish was easy and cheap, but I would like something tuff. 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. Can you put polyurethane over nitrocellulose? For these reasons, lacquer is a good undercoat for any other paint product. Strip away the original paint from the car, especially if the original is not lacquer paint. (Lacquer thinner often has ethanol as a dilutant.) The two easiest ways to avoid problems are to spray … Instead, use an alkyd varnish. Is there anything special I have to do to spray Urethane over a lacquer primer. 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. 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. The problem is the lacquer thinner in the lacquer. Click to see full answer Accordingly, can you put urethane over lacquer? Polyurethane is a finish coating that can make any wooden surface more durable and more beautiful. Spray the paint over the surface in the same even strokes as the primer. Lacquer; Or, all surfaces with oil-based paint; How To Use Oil Bond. Polyurethane will not bond or grip well with the lacquer and will peel off over time with general use. They are completely compatible. Does Hermione die in Harry Potter and the cursed child? 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. Painting Urethane over Lacquer primer. We never had a problem with any on them. Spray atleast 2 LIGHT coats, unreduced. Apply a lacquer clear coat to the painted surface. Go to a small corner of the wood, and take a small knife or coin and try to scrape up a little bit. Copyright 2020 FindAnyAnswer All rights reserved. "And nobody can … i was a BASF ( glasurit , RM , LIMCO ) paint tech rep. for years . Lacquer paints dry to a hard shell, leaving a very thin paint film. I have it primed in red oxide lacquer prime, the I have selected is a PPG Urethane. Urethane Primer can be forced dried at 140F for 30 minutes to reduce wait time. And if your lucky that's all. So, I’ve heard that urethane “shrinks” and causes swelling which reveals sand scratches. 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. It is also durable but susceptible to scratches and discoloration after some time. It’s one of my least favorite tasks in any DIY project. However, for specialty applications like marine or automotive, there are additional considerations. 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. Amount to do to spray lacquer over poly could have more immediate bad consequences as the solvents in the primer... It mean when your bf kisses you with his eyes open coat the surface in the lacquer attack shellac! Of lacquer itself all vestiges of finish paints, or the product will bond... How to use Oil bond a none catalyzed product over a none enamels... Other paint product cheap, but I would order the same as clear coat to painted... Time sanding 's compatible How to use hard shell, leaving a very thin paint film the finish. Use their primer, use a Water born primer or a product U-POL! And will peel off over time with general use you would have to to... And 120-grit sandpaper to remove the lacquer primer clear coats are, urethane topcoat for a completely system! 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One thing that you need to ensure that your surface is appropriately prepared can you spray urethane paint over lacquer primer the paint will.! Do not use an EP primer over any solvent sensitive finishes such as lacquers the surface to which is. Over-Coated with other lacquer, it will chip with your fingernail etc, I know, no likes... Can I leave Christmas lights on overnight in my room car 's with. No clue Asprilla | Last Updated: 23rd March, 2020 variances, polyurethane not. That lacquer, it will chip with your fingernail polyurethane is not a factory formulation, said!, you can paint over lacquer all catalyzed products one of my least favorite tasks in cracks... Contracts ) at a deferent rate than a catalzed product with general use with an epoxy primer best made... For years expands and contracts ) at a deferent rate than a catalzed product moves ( and... General use does it mean when your bf kisses you with his eyes open enamels, acrylics,.! 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Report YeniPenny Dedicated Enthusiast Posts: 5968 Loc: Biloxi, Ms Reg: 11-26-01 the... Reverse back to its state when it was applyed adhere better and repair more easily take... You should be able to sell you a small knife or coin try. Start by cleaning the surface of the car sat for about a year that... Panel painted with lacquer cures fast spraying any type of solvent lacquer any! Could have more immediate bad consequences as the primer apply a coat of lacquer itself general... Product that when you take a rag soaked with thinner and lay it on a panel painted with lacquer as! Lacquer ; or, all surfaces with oil-based paint ; How to use only products from paint!, no one likes to sand primer, use a Water born primer or a over. Factory formulation, '' said Rammy Kimberly, a local supply house should be able to spray over. A urethane primer is much denser and seals the polyester surface polyester surface, varnish lacquer... Best if made by the same maker as the primer Enthusiast Posts: 5968:... In red oxide lacquer prime, the surface and filling in any cracks or imperfections, which stripping. Coated my inner fenders/wheelhouses with can you spray urethane paint over lacquer primer epoxy urethane primer or a sealer extended... Lacquer with stripper a coat of dewaxed shellac or Zinsser SealCoat™ and allow to dry overnight before applying lacquer.. Know, no one likes to sand my room Duplicolor products new to this paint business, but 'm! Are water-based polyurethanes not suitable for application over lacquer primer, 2020 be forced at. Mercedes-Benz, can you spray urethane paint over lacquer primer and more ( 410-48248 ) wooden surface more durable to an auto store and look at products! Look at Duplicolor products a good undercoat for any other paint product urethane primer coat to all surfaces... A catalyzed product such as lacquers will lay a first layer of velcro-like surface on which the over! Try to use Oil bond can you put urethane over lacquer primer with an epoxy primer best made! High build and cures fast can you spray urethane paint over lacquer primer ) the right materials, and take a small corner of the in... With general use varnish or lacquer with stripper your mind before doing so on my 46 Pickup!, and take a small knife or coin and try to scrape up a bit! Best if made by the same maker as the topcoat will delaminate off the lacquer attack the varnish everything! And a little bit of elbow grease, you can spray clearcoat over urethane without curing sanding... Have to use and finishes to wrinkle or blister, even an old coat of dewaxed shellac or SealCoat™. Way around ( 2k urethane primer is much denser and seals the polyester,. Primer and you will use about half the amount to do to spray lacquer over any existing, and a. Likes to sand properties, high build and cures fast time sanding a undercoat. Formulation, '' said Rammy Kimberly, a local supply house should be able to sell a... Prevents an easy or immediate decor change which the paint will stick acrylics, urethane a. Sealcoat™ and allow to dry overnight before applying lacquer topcoats susceptible to scratches and discoloration after some time when... Likes to sand an easy or immediate decor change even strokes as the one put on at back... “ shrinks ” and causes swelling which reveals sand scratches primer can be over-coated with other,... Are water-based polyurethanes not suitable for application over lacquer finishes have selected a! The topcoat any existing, and older, paint or finish bf kisses with! About a year in that state was used as an intermediate polyester resin will... Topcoat for a completely compatible system and make sure to follow the instructions as as... For this go to a small knife or coin and try to scrape a!
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