No real reason to use lacquer primer anyway. Weather, dirt and other damaging elements never ⦠But the lacquer over poly could have more immediate bad consequences as the solvents in the lacquer attack the varnish. They could attack the shellac as well if that was used as an intermediate. Here is a comparison of these two products so that you will be able to make a fully informed decision as to which of the two to use on your next wood project. (Lacquer thinner often has ethanol as a dilutant.) When a car is painted with acrylic enamel, a clear coat is applied over the paint. They are made of solid oak facings with the sides oak veneered plywood. Urethane over lacquer? I've worked with GM factory lacquers that were as resilient as factory baked enamel and other factory GM lacquer that would lift immediately if a thinner or aggresive reducer came anywhere near it. Question I'm a contractor with various guys coming and going over the span of this 4 year custom house we're building. Lacquer clear sucks in the sun but lacquer paint can be wetsanded and buffed to a mirroe finish rather quickly, then cleared over ⦠However, for specialty applications like marine or automotive, there are additional considerations. Today's lacquers are available in both spray and brush-on styles, but both have the advantage of being among the fastest drying of all woodworking finishes.Brushing a lacquer finish requires a little more time and effort, but is probably a little bit cleaner than spraying. The key to success is to make sure the oil has fully dried first. Be sure to follow me on Instagram https://www.instagram.com/caraddictgarage/ for quick updates. You didn't say if the urethane is clear. Because acrylic paint is lighter than urethane, careful consideration should also be used when selecting a primer. Make yourself at home...read, ask and answer! Urethane has many advantages. But the spar was applied over oil, primarily. It is extremely durable and resistant to damage; however, over time it can begin to discolor and become scratched. 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. The drying process is much slower than urethane paints and leaving a coat to sit for 24 to 48 hours before applying another coat is recommended. Aaron, the simple truth is spraying urethane clear over a factory lacquer paint job is a crap shoot. Iâve used spar urethane for years on cornhole boards Iâve made from cherry, curly maple, walnutâ¦even a few exotics, padauk, lacewood zebrawood. . It will bubble or peel eventually. So Which One ? Polyurethane and lacquer are two of the most popular finishes for wood. Paint products adhere by chemical or mechanical bond, or sometimes both. You also must factor in that the EPA has been the driving force in automotive paints as much as anyone over the past 15-20 years. Epoxy coatings darkened in four to six months. "At $250, I can buy urethane paints for that price," Jim said. The rattlecan finish was easy and cheap, but I would like something tuff. It's a different material and will very likely peel in a few years or less. Wonder why it's so smooth? The #1 site on the Internet to discuss and learn about autobody and paint. This should make sense, because once dried, the oil has cured to a hard solid film surface, and stuff will now stick to it. Second, polyurethane is not the best choice for painting over lacquer finishes. For me its simple. The other general class of oils are Non Drying Oils. MillenniumRemodeling | Posted in Construction Techniques on January 27, 2003 07:48am My buddy stained a bookcase, then brushed on a lacquer; hates the result. No degradation at all in the finish. October 28, 2008. Post a reply. One thing about painting stripes, Always try and pull the tape while the paint is still wet, it'll give you a better edge. Painting a car makes it look new again. 02-03-2010, 06:22 PM. Is there a seal coat that can be applied to prevent this reaction and if so, what is it and how should it be applied? Lacquer provides the extremely intense gloss finish often used on many Asian-inspired or ultramodern furnishings. Painting Urethane over Lacquer primer. I have also painted lacquer with a urethane clear. Live Q&A - Can Enamel Paint be applied over lacquer paint? They are both relatively easy to apply and clean up. It's not compatible. urethane over lacquer. The HD color match paint is lacquer, yes, 1970s locquer. Either way, when done right you can hardly tell a difference in the two. View Full Version : Urethane clear coat over lacquer paint? 2k Urethane over lacquer. No, you don't want lacquer over urethane. Automotive paint resins are usually one of the following three chemical compounds: lacquer, enamel, or urethane. Unfortunately, lacquer is also known to peel and discolor over time. It's common to do custom paint in lacquer and coat with urethane, just not the other way around. Instead, use an alkyd v This is especially true with enamel and urethane paints used over a lacquer-based paint or primer, since they are totally incompatible. Never put lacquer over urethane, Lacquer is a rock hard brittle paint and urethane is a flexible paint. 2k primer should go over lacquer primer with NO problems. Durability may be what you are looking for over vintage correctness. Baked alkyd-butyl and butyl coatings looked good after two years of open exterior exposure. Is there anything special I have to do to spray Urethane over a lacquer primer. wildone | Posted in Finishing on January 29, 2002 12:48pm * We have a bookcase combination consiting of four units with a clear lacquer finish. now this was bulk acrylic lacquer that I sprayed on, then spayed 2-3 coats of clear lacquer. It is all a matter of what you are looking for in your guitar. First, whatever finish that is applied will never look as good as the one put on at the factory. I tape off my stripe as ⦠Make yourself at home...read, ask and answer ... could have been from a spray can we or the o/p has no idea. On a vintage recreation or restoration I want lacquer. He estimated acrylic enamel paints at about half the price, or between $100 and $130 per gallon, though he said he hasn't bought an entire gallon of acrylic enamel in a long time. I just looked at a tank and fenders I did about 12 years ago and I was even amazed, they looked perfect. Can you paint urethane over enamel primer? I have it primed in red oxide lacquer prime, the I have selected is a PPG Urethane. Varnish over Lacquer? In short; you CAN apply a lacquer or a polyurethane over a Danish oil. This means that you might be facing frequent maintenance, but it should be relatively easy to touch up . Acrylic lacquer paints can be costlier than acrylic enamels. As with all primers, proper surface preparation and weather conditions must be ⦠However, there are distinct advantages to using each. Lacquer finishes have been used for centuries to give woodworking projects a tough, durable and water-resistant clear finish. If the urethane clear is cured and isn't scratched or sanded thin you can shoot lacquer over it without any worry of lifting. Correspondingly, can I put urethane over lacquer? Its 2013 avoid lacquer if possible and use a urethane single stage or urathane base coat clear coat you will have a more durabale stable end product. General Discussion. A nitrocellulose lacquer failed in less than one year of open exterior exposure. (Ohâ¦I waxed the boards too.) It's applied via a sprayer, because it is thinner than the other finishes. The high lead content in lacquer has led to lower lacquer production, which in turn led to higher demand among a small set of restorers. Why? Though urethane paint is very durable, the surface to which it is applied largely determines which primer to use. Never paint any urethane over lacquer primer. When I use urethane, I keep it as thin as possible. If you cut thru or cut it very thin the strong lacquer thinner could get thru and possibly lift the urethane. PeaceKeeper. Lacquer over Urethane on Site A builder gets advice for using a shellac inter-coat to isolate a lacquer top coat from already-applied urethane. Can he sand the lacquer and put a spar urethane over it without clouding the ⦠Manufacturers make polyurethane from synthetic resins ⦠General Discussion. Q: I would like to spray a lacquer finish over an oil-based polyurethane, but have been told that the two finishes are not compatible. If you only scuff and shoot the lacquer, there isn't a darn thing that can happen. Identifying the finish on wood floors or furniture is necessary if you plan to strip and refinish the wood surface. A quick guide to wood finishes - what to use, and when to use them. Polyurethane is a highly durable finishing material that comes in high-gloss, gloss or matte finishes. This is why it is best not to mix and match systems or ⦠Urethane lacquers lasted about one year under the same conditions. I've done a lot of Harley tins with Harley paint that is lacquer then top coated with urethane clear and never had any problems. 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. Just as you can over any Drying Oil. I painted my GTX with lacquer and a clear enamel over it in the 80s it lasted about 10 years and then started to look shabby. I understand that Polyurethane or Urethane clearcoats are more durable - harder and gasoline resistant than lacquer. Unlike polyurethane, where you must sand the surface in order to apply a new coat, lacquer is generally thin enough that a new coat can be sprayed over the surface without the need for this. I just finished the body work on my 46 Hudson Pickup truck. Greg Williams: The best Iâve used is ⦠If you want to learn how to paint your own car, this is the place! Click to see full answer. That is why the light sanding or scuffing with 600 is all that is needed. It's more flexible, arguably equal to or better gloss, and excellent UV protection when cleared. Thanks Randy Polyurethane will not bond or grip well with the lacquer and will peel off over time with general use. If it's not, shoot it with another coat of clear urethane. There would be no problem spraying lacquer over the urethane, no problem what so ever. The lacquer you get today is not the lacquer you sprayed 20-15 or even 5 years ago. 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