For me its simple. Painting Urethane over Lacquer primer. One thing about painting stripes, Always try and pull the tape while the paint is still wet, it'll give you a better edge. When I use urethane, I keep it as thin as possible. 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. "At $250, I can buy urethane paints for that price," Jim said. 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. Instead, use an alkyd v Click to see full answer. 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. They are both relatively easy to apply and clean up. Can he sand the lacquer and put a spar urethane over it without clouding the … If the urethane clear is cured and isn't scratched or sanded thin you can shoot lacquer over it without any worry of lifting. Either way, when done right you can hardly tell a difference in the two. If it's not, shoot it with another coat of clear urethane. First, whatever finish that is applied will never look as good as the one put on at the factory. 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. A nitrocellulose lacquer failed in less than one year of open exterior exposure. Post a reply. Baked alkyd-butyl and butyl coatings looked good after two years of open exterior exposure. Live Q&A - Can Enamel Paint be applied over lacquer paint? 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. Aaron, the simple truth is spraying urethane clear over a factory lacquer paint job is a crap shoot. Lacquer clear sucks in the sun but lacquer paint can be wetsanded and buffed to a mirroe finish rather quickly, then cleared over … 2k Urethane over lacquer. This is why it is best not to mix and match systems or … 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. Urethane has many advantages. Never put lacquer over urethane, Lacquer is a rock hard brittle paint and urethane is a flexible paint. It is extremely durable and resistant to damage; however, over time it can begin to discolor and become scratched. It's not compatible. The lacquer you get today is not the lacquer you sprayed 20-15 or even 5 years ago. I tape off my stripe as … Polyurethane and lacquer are two of the most popular finishes for wood. This should make sense, because once dried, the oil has cured to a hard solid film surface, and stuff will now stick to it. But the spar was applied over oil, primarily. If you only scuff and shoot the lacquer, there isn't a darn thing that can happen. Be sure to follow me on Instagram https://www.instagram.com/caraddictgarage/ for quick updates. The rattlecan finish was easy and cheap, but I would like something tuff. Make yourself at home...read, ask and answer! Durability may be what you are looking for over vintage correctness. Greg Williams: The best I’ve used is … If you cut thru or cut it very thin the strong lacquer thinner could get thru and possibly lift the urethane. The other general class of oils are Non Drying Oils. 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. Weather, dirt and other damaging elements never … 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. It will bubble or peel eventually. Because acrylic paint is lighter than urethane, careful consideration should also be used when selecting a primer. 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? 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. Lacquer finishes have been used for centuries to give woodworking projects a tough, durable and water-resistant clear finish. No, you don't want lacquer over urethane. . It's applied via a sprayer, because it is thinner than the other finishes. urethane over lacquer. 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. Polyurethane will not bond or grip well with the lacquer and will peel off over time with general use. It is all a matter of what you are looking for in your guitar. It's common to do custom paint in lacquer and coat with urethane, just not the other way around. Varnish over Lacquer? Manufacturers make polyurethane from synthetic resins … Make yourself at home...read, ask and answer ... could have been from a spray can we or the o/p has no idea. The #1 site on the Internet to discuss and learn about autobody and paint. now this was bulk acrylic lacquer that I sprayed on, then spayed 2-3 coats of clear lacquer. Though urethane paint is very durable, the surface to which it is applied largely determines which primer to use. General Discussion. PeaceKeeper. As with all primers, proper surface preparation and weather conditions must be … Can you paint urethane over enamel primer? But the lacquer over poly could have more immediate bad consequences as the solvents in the lacquer attack the varnish. Painting a car makes it look new again. 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. Urethane over lacquer? wildone | Posted in Finishing on January 29, 2002 12:48pm * We have a bookcase combination consiting of four units with a clear lacquer finish. In short; you CAN apply a lacquer or a polyurethane over a Danish oil. I have also painted lacquer with a urethane clear. This means that you might be facing frequent maintenance, but it should be relatively easy to touch up . Question I'm a contractor with various guys coming and going over the span of this 4 year custom house we're building. No real reason to use lacquer primer anyway. Wonder why it's so smooth? No degradation at all in the finish. Thanks Randy A quick guide to wood finishes - what to use, and when to use them. They are made of solid oak facings with the sides oak veneered plywood. Just as you can over any Drying Oil. So Which One ? Polyurethane is a highly durable finishing material that comes in high-gloss, gloss or matte finishes. ... you'll have to spray a solvent-based clear over an Auto-Air basecoat. Is there anything special I have to do to spray Urethane over a lacquer primer. It's a different material and will very likely peel in a few years or less. The clear coat of urethane supplies the acrylic enamel paint with a buffer between the paint and the elements. I just finished the body work on my 46 Hudson Pickup truck. 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. The HD color match paint is lacquer, yes, 1970s locquer. I just looked at a tank and fenders I did about 12 years ago and I was even amazed, they looked perfect. The key to success is to make sure the oil has fully dried first. You didn't say if the urethane is clear. General Discussion. If you want to learn how to paint your own car, this is the place! 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. (Oh…I waxed the boards too.) Identifying the finish on wood floors or furniture is necessary if you plan to strip and refinish the wood surface. Never paint any urethane over lacquer primer. Paint products adhere by chemical or mechanical bond, or sometimes both. 02-03-2010, 06:22 PM. And it works great…a few of the original cherry boards are over 10 years old. 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. However, there are distinct advantages to using each. Urethane lacquers lasted about one year under the same conditions. (Lacquer thinner often has ethanol as a dilutant.) Epoxy coatings darkened in four to six months. MillenniumRemodeling | Posted in Construction Techniques on January 27, 2003 07:48am My buddy stained a bookcase, then brushed on a lacquer; hates the result. 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. 2k primer should go over lacquer primer with NO problems. Lacquer provides the extremely intense gloss finish often used on many Asian-inspired or ultramodern furnishings. However, for specialty applications like marine or automotive, there are additional considerations. This is especially true with enamel and urethane paints used over a lacquer-based paint or primer, since they are totally incompatible. Just don't cut thru the urethane, that would be the only issue. It's more flexible, arguably equal to or better gloss, and excellent UV protection when cleared. 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. There would be no problem spraying lacquer over the urethane, no problem what so ever. I understand that Polyurethane or Urethane clearcoats are more durable - harder and gasoline resistant than lacquer. Acrylic lacquer paints can be costlier than acrylic enamels. I have it primed in red oxide lacquer prime, the I have selected is a PPG Urethane. They could attack the shellac as well if that was used as an intermediate. Why? October 28, 2008. View Full Version : Urethane clear coat over lacquer paint? 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