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