Why? Post a reply. For me its simple. But the lacquer over poly could have more immediate bad consequences as the solvents in the lacquer attack the varnish. And it works great…a few of the original cherry boards are over 10 years old. Weather, dirt and other damaging elements never … It will bubble or peel eventually. If it's not, shoot it with another coat of clear urethane. Wonder why it's so smooth? You didn't say if the urethane is clear. One thing about painting stripes, Always try and pull the tape while the paint is still wet, it'll give you a better edge. Never paint any urethane over lacquer primer. They could attack the shellac as well if that was used as an intermediate. No degradation at all in the finish. In short; you CAN apply a lacquer or a polyurethane over a Danish oil. 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. The rattlecan finish was easy and cheap, but I would like something tuff. As with all primers, proper surface preparation and weather conditions must be … It's a different material and will very likely peel in a few years or less. (Lacquer thinner often has ethanol as a dilutant.) The clear coat of urethane supplies the acrylic enamel paint with a buffer between the paint and the elements. Durability may be what you are looking for over vintage correctness. That is why the light sanding or scuffing with 600 is all that is needed. The HD color match paint is lacquer, yes, 1970s locquer. The key to success is to make sure the oil has fully dried first. 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. This means that you might be facing frequent maintenance, but it should be relatively easy to touch up . The #1 site on the Internet to discuss and learn about autobody and paint. This is why it is best not to mix and match systems or … 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. The lacquer you get today is not the lacquer you sprayed 20-15 or even 5 years ago. Identifying the finish on wood floors or furniture is necessary if you plan to strip and refinish the wood surface. 2k Urethane over lacquer. No real reason to use lacquer primer anyway. Can you paint urethane over enamel primer? Lacquer finishes have been used for centuries to give woodworking projects a tough, durable and water-resistant clear finish. Just don't cut thru the urethane, that would be the only issue. I tape off my stripe as … General Discussion. 2k primer should go over lacquer primer with NO problems. Just as you can over any Drying Oil. 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. 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. There would be no problem spraying lacquer over the urethane, no problem what so ever. A nitrocellulose lacquer failed in less than one year of open exterior exposure. It is extremely durable and resistant to damage; however, over time it can begin to discolor and become scratched. 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? PeaceKeeper. So Which One ? A quick guide to wood finishes - what to use, and when to use them. Urethane lacquers lasted about one year under the same conditions. (Oh…I waxed the boards too.) Click to see full answer. Either way, when done right you can hardly tell a difference in the two. 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. However, for specialty applications like marine or automotive, there are additional considerations. But the spar was applied over oil, primarily. Make yourself at home...read, ask and answer! Thanks Randy However, there are distinct advantages to using each. Polyurethane and lacquer are two of the most popular finishes for wood. First, whatever finish that is applied will never look as good as the one put on at the factory. The other general class of oils are Non Drying Oils. Manufacturers make polyurethane from synthetic resins … 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. Painting Urethane over Lacquer primer. Automotive paint resins are usually one of the following three chemical compounds: lacquer, enamel, or urethane. Baked alkyd-butyl and butyl coatings looked good after two years of open exterior exposure. now this was bulk acrylic lacquer that I sprayed on, then spayed 2-3 coats of clear lacquer. Acrylic lacquer paints can be costlier than acrylic enamels. Urethane over lacquer? I just looked at a tank and fenders I did about 12 years ago and I was even amazed, they looked perfect. Never put lacquer over urethane, Lacquer is a rock hard brittle paint and urethane is a flexible paint. Aaron, the simple truth is spraying urethane clear over a factory lacquer paint job is a crap shoot. Be sure to follow me on Instagram https://www.instagram.com/caraddictgarage/ for quick updates. Unfortunately, lacquer is also known to peel and discolor over time. Polyurethane will not bond or grip well with the lacquer and will peel off over time with general use. Correspondingly, can I put urethane over lacquer? It is all a matter of what you are looking for in your guitar. Varnish over Lacquer? It's not compatible. 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. When a car is painted with acrylic enamel, a clear coat is applied over the paint. Can he sand the lacquer and put a spar urethane over it without clouding the … Lacquer provides the extremely intense gloss finish often used on many Asian-inspired or ultramodern furnishings. No, you don't want lacquer over urethane. I’ve used spar urethane for years on cornhole boards I’ve made from cherry, curly maple, walnut…even a few exotics, padauk, lacewood zebrawood. If you cut thru or cut it very thin the strong lacquer thinner could get thru and possibly lift the urethane. Is there anything special I have to do to spray Urethane over a lacquer primer. Urethane has many advantages. View Full Version : Urethane clear coat over lacquer paint? Live Q&A - Can Enamel Paint be applied over lacquer paint? 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. 02-03-2010, 06:22 PM. ... you'll have to spray a solvent-based clear over an Auto-Air basecoat. Polyurethane is a highly durable finishing material that comes in high-gloss, gloss or matte finishes. Second, polyurethane is not the best choice for painting over lacquer finishes. When I use urethane, I keep it as thin as possible. 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. Make yourself at home...read, ask and answer ... could have been from a spray can we or the o/p has no idea. Epoxy coatings darkened in four to six months. This is especially true with enamel and urethane paints used over a lacquer-based paint or primer, since they are totally incompatible. 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. If the urethane clear is cured and isn't scratched or sanded thin you can shoot lacquer over it without any worry of lifting. 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. Because acrylic paint is lighter than urethane, careful consideration should also be used when selecting a primer. This should make sense, because once dried, the oil has cured to a hard solid film surface, and stuff will now stick to it. "At $250, I can buy urethane paints for that price," Jim said. They are both relatively easy to apply and clean up. . It's more flexible, arguably equal to or better gloss, and excellent UV protection when cleared. Greg Williams: The best I’ve used is … urethane over lacquer. I have also painted lacquer with a urethane clear. Paint products adhere by chemical or mechanical bond, or sometimes both. On a vintage recreation or restoration I want lacquer. October 28, 2008. If you want to learn how to paint your own car, this is the place! Question I'm a contractor with various guys coming and going over the span of this 4 year custom house we're building. 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. General Discussion. 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. Though urethane paint is very durable, the surface to which it is applied largely determines which primer to use. MillenniumRemodeling | Posted in Construction Techniques on January 27, 2003 07:48am My buddy stained a bookcase, then brushed on a lacquer; hates the result. It's applied via a sprayer, because it is thinner than the other finishes. Instead, use an alkyd v If you only scuff and shoot the lacquer, there isn't a darn thing that can happen. I just finished the body work on my 46 Hudson Pickup truck. 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. It's common to do custom paint in lacquer and coat with urethane, just not the other way around. Lacquer clear sucks in the sun but lacquer paint can be wetsanded and buffed to a mirroe finish rather quickly, then cleared over … They are made of solid oak facings with the sides oak veneered plywood. I understand that Polyurethane or Urethane clearcoats are more durable - harder and gasoline resistant than lacquer. 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