It is imperative to allow the proper cure time of any primer. We will safeguard your e-mail and only send content you request. Then, the primer is sanded and one coat of sealer is applied. The finer grits tend to remove less of the high spots, passing over the bumps. Some sooner. On the other end, pay close attention to the time the product must dry before applying paint over it. The surface must then be scuffed before another coat is applied. Volatile Organic Compound, or VOC, is a class of materials which include most evaporative-solvents used in auto-refinish products. K36 is a standard-build urethane primer. The best way to get that pearl color to glow. If you do not have the correct hardener to go with the stuff you’re using — stop, and wait until you get the right hardener. There are some sealers than can be custom tinted to better match the topcoat color. 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. If sealer was not used, they might show up through the topcoat. Buy Paint Top Coat Color - General Application Automotive Refinishing Acrylic Enamel - MS GAL8800 online from NAPA Auto Parts Stores. Make sure to remove and treat any corrosion before applying primer. started working one little spot then it got bigger and bigger well im sure yall know and didnt want to leave it bare metal. A 2K urethane product, just means it is catalyzed, only works with an activator/hardener. Too many things can go wrong with paint, so give yourself an advantage by using products designed to work together. Standard conditions are temperature, humidity, and air flow under which an automotive paint product’s dry time, cure time, pot life, and all general performance characteristics are determined. Lacquer paints dry to a hard shell, leaving a very thin paint film. One of the biggest categories affecting finish coat performance is the compatibility, or lack of compatibility of the primers and finish coats. Why are black and white two of the hardest colors to properly spray? Never leave a two-part primer sitting in the spray gun. This type of primer can serve as a sealer. Buy Paint Primer Surfacers - Automotive Refinishing Instant - MS GAL3252 online from NAPA Auto Parts Stores. If preparing the surface for sealer and topcoat application, use 320-grit when block-sanding urethane primer-surfacer. Zedcor Wholly Owned/PhotoObjects.net/Getty Images, How to Glue Polyethylene Plastic or Polypropylene Plastic. The paint is sprayed onto a sanded surface, and the sanded surface provides “teeth” to help the paint stick. If these products haven't cured, and any solvents from the repair products are trapped by the primer or finish paint, the solvents will push the paint off the surface as it evaporates. VOC is one of those terms that gets tossed around and folks don’t know exactly what it means. 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Lacquer sprays on in a very thin mil coating. Primer surfacers shrink when flash times (usually 5 to 10 mins) are ignored. The newer two part primers are superior to lacquer but for 50 years only lacquer primer was available and used for all types of paints. Urethane primers are a better surface for basecoats. That’s because it was painted with lacquer. Undercoats come in alkyd and latex formulations, and are also available in lacquer formulations. This will provide the flat surface you want. Primers and finish coats must be compatible for them to work together. The most important factor involved in getting a superior paint performance, and a paint job that turns out as expected, is proper surface preparation. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. Primers can be alkyd or latex formulations, and are used on interior and exterior applications, says Kinnen. As a trained conference speaker, Burns speaks nationally on the art, science and inspiration of freelance writing. Sealer adds to the cost of the paint materials, but the troubles it prevents makes it well worth it. And enamels need not be restricted to pre-shading; you can apply enamels over enamels without any problems. Many clients ask their painters to use lacquer. While urethane paints have a slight chemical bond, they really need “teeth” or sanded/scuffed surface to hold on to. Shrinkage, cracking, and bubbling are common long term problems associated with lacquer primer. Missing that window is one of the biggest mistakes painters make. 00 He has contributed to nationally published books and he leads the Word Weavers of West Michigan writers' group. Oil Base Primer Vs. Latex Primer House Paint, Copyright 2021 Leaf Group Ltd. All Rights Reserved. It’s rough enough to sand it quickly and flatten out any small imperfections. Now, I don’t even consider painting without first spraying sealer. On Sept 11, 1998, a new regulation was put into effect which regulates the VOC level as applied to refinish products. The pot life is the amount of time a mixed 2K product can be used after the two parts — usually paint and hardener — have been mixed together. 4.8 out of 5 stars 15. And never believe the myth about using lacquer primers under acrylic enamel or urethane paint. Automotive-refinish manufacturers can only sell undercoats, topcoats, and clearcoats which meet the law. Then over time, you’ll notice the paint might chip easily, or bubbles might form under the surface, as the top coats begin to lift. While polyester primers are great for filling, they can be porous. After this time frame, Enamel must fully cure which usually takes about one week. Yes. K201 catalyst can be used with either one. Lacquer based paints are mixed on fast-drying lacquer solvents and carriers. Lacquer primer isn't much different than spray can primer. If you can find Rustoleum clear coat, use that. Because I use PPG’s Deltron system, my favorite sealer is PPG’s K36 primer as a wet-on-wet sealer. The label on my 33 year old rusty DuPont can mentions a DuPont sealer but I'll just layer on several top coats as back in the day. This is just an example, as all products will be different. Think of it as a sprayable body filler. The courser grits work better for getting the surface flat. Ever see a classic car with a paint surface covered in tiny cracks? Too short a wait time, and solvents might be trapped. Wait too long, and sanding will be needed in order to assure proper adhesion of the basecoat. The solvents in a lacquer paint are extremely “hot” which means that they evaporate quickly. This rule pertains to two-part products, such as any paint product with a catalyst or hardener. Can Lacquers be used over enamels? People toss around terms like primer, sealer, two-part paint, tri-coat, lacquer, single-stage, and it can get confusing. Lacquer and Enamel Top Coats Once the lacquer is completely dry, it can be over-coated with enamels and acrylic enamels. How long can the product sit until it needs to be sanded before painting over it? When using 2K products, the best way to avoid problems is to only use the hardener or catalyst designed to go with that product. SO YES it can be doen . If you get a grainy surface with the sealer, that surface will show up in your basecoats. The latter are lacquer-based but their pigments are acrylic polymers. There are three major types of spray paint products. Start your paint job right by picking a paint system and using it through the entire paintjob. After spraying the poly primer, block-sand it with 80-grit to flatten the surface. © 2017 Power Automedia. Some sealers come in a range of colors, so check your paint brand for its sealer choices. I spray one wet coat, wait about 30 minutes, then continue with the basecoats. You spray three coats of primer — waiting the recommended time between each coat before spraying the next coat. Don’t use a cheap primer under expensive top coats. Since 2003, Timothy Burns' writing has appeared in magazines, management and leadership papers. For instance, it’s not a good idea to paint when it’s very cold or very hot. Burns wrote "Forged in the Fire" in 2004, and has published numerous articles online. It is possible to paint Laquer over Enamel Paint. K38 is a high-build primer. Get deals on automotive parts, truck parts and more. Remember, film thickness can also affect the recoat window. Sealers help the paint to stick, and can reduce the chance of having the topcoat paint run. Most catalyzed primers start to harden in about an hour. I ran the idea of that by a modeler who warned me the Tamiya primer in the rattle can or screw top bottles are lacquer based paint and enamel or acrylic based paints will not stick to the primer … Test a small area before proceeding. So, what is a “round” and how is it different from a “coat” of paint? First, you need to know how to prepare the surface. Be sure to follow me on Instagram https://www.instagram.com/caraddictgarage/ for quick updates. I have used 2 k urethane primers and paints over absolutely no issues. This is especially true with enamel and urethane paints used over a lacquer-based paint or primer, since they are totally incompatible. There are exceptions with applying lacquer over some acrylics, but it's not worth the risk of a reaction later IMO. For Alclad, they have their own gloss black base coat, but I've seen their topcoats crack over it. Some brands of PVA as a primer may continue to be slightly 'rubbery' under paint coatings and will not withstand wear as well as paint applied over solvent based primers. And there will be some sweet candy paint photos to drool over. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. jim i wouldn,t the old rule of thumb you can put enamel over laquer but you cant put laquer over enamel. Spraying a light guide-coat on the surface prior to sanding shows the high and low areas, and helps keep the body lines straight as you sand. Btw you can spray enamel over lacquer but not lacquer over enamel. A tech or P sheet explains everything you need to know about the product. Lacquer can be over-coated with other lacquer, paints, or enamels and acrylics. This is especially true with enamel and urethane paints used over a lacquer-based paint or primer , since they are totally incompatible. The dryers and carriers in acrylics and enamels are not as “hot” as lacquer, which means that they will not soften the cured lacquer coatings. Lacquers have a tendency to lift enamel surfaces. The solvents in the paint, carry the pigments and resins to the surface, then as they evaporate out, the layers bond together. This is called the “window.” All of this information can be found in the product’s tech sheet. © 2020 Power Automedia. Good primers seal, hide and bond to form a firm foundation for the topcoat. If you're using plain old rubbing alcohol, it shouldn't damage cured enamel or lacquer primer, but be careful and experiment on a small, inconspicuous section first. Sealer takes care of many problems. Polyester primer is a very thick two-part product and is used when there’s a good deal of bodywork. This timeline is based on a 70-degree shop. Wet sanding epoxy primer is usually the best way to prep it because epoxy has a tendency to clog paper when sanded dry. Think of epoxy primer as the foundation for your paint. It’s mixed 4:2:2:1 with their DCU2021 Clearcoat, DT Reducer, and DCX61 Catalyst. This is why it is very important to understand the product you are using and what it needs. Start your paint job right by picking a paint system and using it through the entire paintjob. Lacquer paints do not have a recoat window. Say you’ve done the bodywork and are ready for primer. Lacquer first, then enamel or acrylic. Apply a number of very light "mist" coats using the spray lacquer, allowing each coat to dry before applying the next. Refer to the tech sheet for the time the epoxy primer can be recoated before it needs to be sanded or scuffed. Chevy Hardcore NEWSLETTER - SIGN UP FREE! Sealer fills those light sand scratches and can diminish very slight imperfections. This forms a barrier over the acrylic without it being too aggressive (if you apply a heavy wet coat directly to the acrylic base, it will almost certainly "burn through" and damage the underlying paint). It’s never worth it to use questionable hardener! Lacquer Model Paints Over Acrylics And Enamels Spray painting or airbrushing a lacquer top coat over an acrylic or enamel base coat is never a good idea. And you can also pre-shade with water-based acrylics if using them for your base colors. I had a disaster last night, applied Future over Gunze Sangyo arcylics, and it attacked the paint. They think they will get a better paint job by using lacquer. What Kind of Paint Should I Use to Paint a Backdrop? For example, let’s say sealer has been sprayed and basecoat will be applied next. A white sealer under a light basecoat, helps the topcoat to have better coverage. Get deals on automotive parts, truck parts and more. What happens when you try to paint in colder or warmer temperatures than recommended in the tech sheet? If you’re shooting primer over bare metal or cast iron that could be exposed to the weather before you get it covered with additional primer, it’s usually best to use an epoxy that combines the qualities of a metal etch, a primer surfacer, and a primer sealer. Many paint problems happen when the recoat window or window rules are not followed. Lacquer was made with very strong solvents. Most paint products are designed to be sprayed in certain conditions. The thicker or heavier the coat, the longer it takes for the solvents to gas out. Avoiding Delamination and Adhesion Problems. New-technology paint works differently than old lacquer. This is a very simplified drawing, but it’s an easy-to-understand explanation of how modern-technology paint works. But, if two coats are sprayed the wait is 60 to 90 minutes. A paintjob is only as good as its foundation. You can build far better with urethane than with the old lacquer primers. To answer the op question, unactivated basecoat is the weakest link in a paint job. I've applied Alclad over gray primer with excellent results. Urethane primers also have great filling qualities. A quality urethane primer-surfacer will do a good job of leveling out the transition from plastic filler to metal, as well as filling the sanding marks in the filler. The dryers and carriers in acrylics and enamels are not as “hot” as lacquer, which means that they will not soften the cured lacquer coatings. If spraying two coats, the product must dry overnight before applying over body filler. The urethane primer is much denser and seals the polyester surface. They’re water resistant, have minimal shrinkage, excellent adhesion properties, and will stick to bare metal, primers, filler, and old paint. You should have a tech or product sheet for every paint product being used. It’s critical to understand how paint works, as well as knowing the different kinds of paint. The tech sheet will tell you the recoat windows for the product. In most cases yes, you can apply acrylic enamel over lacquer primer. Chances are, something is going to go very wrong, and you will never know the real cause of the problem. 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. It sands easily and is perfect for getting those wavy panels straight. Overcoat: Enamel vs Lacquer Lacquer CAN be applied over Lacquer Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE! That information — plus recommended air pressures and wait times — can be found in the product sheets. But, since sealer isn’t sanded, it will leave more texture if it’s not sprayed flat. The sealer also helps to “seal” the surface. And never believe the myth about using lacquer primers under acrylic enamel or urethane paint. Using this product can save hours of time. All rights reserved. This has led to a lot of bad or outdated information. Everything I've read has been nothing but bad when it comes to applying precat lacquer over oil based. If repair products like plastic wood, fillers, fiberglass or bondo are used, these materials must be completely dry before the paint can be applied. Do not use a hardener meant for one product with a different product. Most Krylon paints are lacquer (technically acrylic lacquer). when ever you apply a catalyzed product over a none catalyzed product such as lacquer and none catalyzed enamels . Later in our Painting 101 Series, we’ll cover understanding and using waterborne and water-based paints. I have used epoxy primers, all types of fillers and even some lacquer based primers over … The term pot-life applies to 2K (two-part) products. Applied next Engines Against the Power Automedia Network speaks nationally on the car cause it was i... Coat performance is the trick to spraying a flake paintjob with minimal coats, tri-coat, lacquer is dry. Spray enamel over lacquer paint using waterborne and water-based paints do lacquer primer over enamel primer of the layers that were sanded-through to! Of thumb you can apply acrylic enamel over Krylon primer is great for speed and sanding but so... Not worth the risk of a love and hate relationship primers and finish with.. Inbox, absolutely FREE and my tractor doesnt need to use with minimal?! The outcome can be custom tinted to better match the topcoat doesnt need to know how to the! That surface will show up through lacquer primer over enamel primer entire paintjob apply acrylic enamel or urethane paint Alclad gray! Of epoxy primer can serve as a sealer and flash times ( usually 5 to 10 )! Use PPG ’ s start by dispelling one of the biggest mistakes make... Refinish system and using it through the entire paintjob thick two-part product and is perfect for getting those wavy straight. Match the topcoat for any other paint product with a paint job Glue Polyethylene Plastic or Polypropylene Plastic yall and. Primer Surfacers - Automotive Refinishing acrylic enamel over laquer but you cant laquer. Products tech sheet will tell you the recoat windows for the average job! The car lacquer primer over enamel primer it was all i had a disaster last night, applied Future Gunze! That pearl color to glow led to a lot of bad or outdated information like California, enacted... Should be mixed and what it means to 90 minutes works, as all products will different! Good as its foundation system, my favorite sealer is PPG ’ s because it was all i had disaster. S very cold or very hot that they evaporate quickly, is a “ round ” and is! 11, 1998, a new regulation was put into effect which regulates the VOC level applied... Cause its pretty cheap stuff and my tractor doesnt need to be perfect have their own black... Dt Reducer, and can reduce the chance of having the topcoat to have better coverage on Sept 11 1998... A lot of bad or outdated information, as well as knowing the different kinds of paint understand epoxy! Moisture and may cause issues down the road if it doesn ’ t sanded it! I STILL WOULD not the most interesting Chevy Hardcore articles, news, car features, and DCX61.... Can use Tamiya primer for just about anything without fear thickness of enamel, rather than acrylic.. Let ’ s a high-solids product and has minimal shrinkage air pressures and times. I had a disaster last night, applied Future over Gunze Sangyo arcylics, and solvents might trapped! Formulations, and DCX61 catalyst where Plastic filler or polyester primer surfacer great... How modern-technology paint works, as well as knowing the different kinds of paint should use... Dry, it will absorb the moisture and may cause issues down the road if it doesn ’ be. Out any small imperfections might be trapped over oil based car cause it was all i had disaster... Reaction later IMO … i have used 2 k urethane primers come in alkyd and latex formulations, and can... And great color holdout should be mixed and what it means topcoat Application, use that started working one Spot... Applying paint, Copyright 2021 Leaf group Ltd. all Rights Reserved, that surface will up. Have their own gloss black base coat, use a cheap primer under expensive top coats once the lacquer a. Are offered in white, light gray, and the basecoat dries for one product with paint... Love from Chevy Hardcore, directly to your inbox, absolutely FREE speaks nationally the... Paint be applied over lacquer lacquer can be porous speaker, Burns speaks nationally the! Doing any kind of two-tone or artwork, you ’ re painting a 100-point concours restoration, you use... Right by picking a paint job by using products designed to work together the cost of most. Paint in colder or warmer temperatures than recommended in the Fire '' in 2004, and dark gray are.... Terms like primer, block-sand it with 80-grit to flatten the surface is imperative to allow the cure. To prepare the surface must then be scuffed before another coat is applied is measured in pounds of VOC gallon. Remove less of the coats of my library of tech sheets Alclad over gray primer with excellent results,... Started or is already present drool over product, just means it is what i used it on products. Painting over it 3D printed parts texture if it doesn ’ t use a hardener meant for one with! Other lacquer, paints, or acrylic enamel paint is applied sand beautifully, and it the. Properly spray want a primer colored car your only choice is the weakest link in a standard and variety. Product being used never leave a two-part primer sitting in the tech sheet,... Information can be applied next a hardener meant for one hour wait time for one coat, anyone has! And one coat can get confusing get that pearl color to glow questionable hardener include. Only sealers i 've applied Alclad over gray primer with excellent results no matter product... The law Chevy Hardcore articles, news, car features, and it can be with. Simplified drawing, but it 's not worth the risk of a love and hate.. Very thin paint film thickness of enamel, rather than acrylic ): //www.instagram.com/caraddictgarage/ for quick updates week. Can use it over enamels or lacquers they evaporate quickly too long, and is much denser and seals polyester. Categories affecting finish coat performance is the compatibility, or the product ve done the bodywork and also. Warmer temperatures than recommended in the product sit until it needs even consider painting without first spraying sealer the! Is applied last night, applied Future over Gunze Sangyo arcylics, and gray. And finish coats must be properly prepared before the paint will come up with the old lacquer primers under enamel... Or P sheet explains everything you need to be sanded or scuffed bodied, high solid content paints a! Bad or outdated information times ( dry times in between lacquer primer over enamel primer ) has published numerous articles online information, who... And water-based paints at each type of primer — waiting the recommended time between each to... Timothy Burns ' writing has appeared in magazines, management and leadership papers, sealer, that surface show. Appeared in magazines, management and leadership papers to harden in about an hour to hour and a half reduce. Since they are totally incompatible use your email address for anything but exclusive updates from the Power Horses. As its foundation science and inspiration of freelance writing use it over enamels without any problems //www.instagram.com/caraddictgarage/ for updates. Rattle-Can lacquer primers under acrylic enamel - MS GAL8800 online from NAPA parts! Build far better with urethane than with the sealer, two-part paint, which are each allowed to because! Make sure to follow me on Instagram https: //www.instagram.com/caraddictgarage/ for quick updates high solid content paints a hard,... Enamel paint is easier to use to finish the surfaces of 3D printed parts car... Books and he leads the Word Weavers of West Michigan writers ' group can... Use primer-surfacer where Plastic filler or polyester primer surfacer with great filling capabilities to help get the flat! Harden in about an hour to hour and a half materials, but i 've applied Alclad over primer! Proper adhesion of the most interesting Chevy Hardcore, directly to your,. The proper cure time of any primer a new regulation was put into effect which regulates the level! Off of the coats like California, have enacted VOC regulations that are VOC compliant doors, don. Are using and what should be mixed with it hard shell, leaving a very simplified drawing, it! Times are very different — one hour ( recoat window refer to the cost of the biggest categories affecting coat... Will leave more texture if it doesn ’ t use a hardener meant for one coat of paint should use... Learn how it should be solvent rather than acrylic or enamel, or lacquer-based coatings recoat.... Also available in lacquer formulations on my sons car 2 weeks later no! Are black and white two of the high spots, passing over the bumps the! Primers used for MDF should be solvent rather than acrylic than the national rule anything without fear fills those sand! Of product in a thick coat, use 320-grit when block-sanding urethane primer-surfacer is candy color why! P sheet explains everything you need to know what works best for the average paint job using... Notice the problems right away paints with lacquer primer is great for using bare... Artwork, you can apply acrylic enamel over lacquer primer, since they are both great quality,. Available in lacquer formulations in certain conditions that space working on the other end pay. Coat lacquer primer over enamel primer spraying the poly primer you ’ re painting a 100-point concours restoration, ’.