This exclusivity has occasionally prompted a condescending snicker or two in professional circles when discussing the merits of lacquer over polyurethane. The "professional" tag some professionals often attribute to lacquer does not necessarily reflect lacquer's superiority as a finish, but rather its unarguable superiority as a commercial production-finishing product.
In its totality, the use of lacquer saves a great deal of time and effort. First, among its many economic advantages, finishers spray lacquer; they do not brush it on. The spraying method is the fastest means of covering a surface; some finishers will spray six or more applications of lacquer within an eight-hour workday. Since the solvents present in succeeding coats of lacquer melt into and slightly reconstitute previous dry coats, there is no need to sand between coats.
Lacquer presents a "forgiving" nature. Do-it-yourselfers should be aware that in order to apply lacquer efficiently and easily, they must purchase a high-volume, low-pressure spraying device. There is a single brush-on lacquer available today, but it requires you to have a great deal of dexterity because it sets-up and dries very quickly. Polyurethane finish is a brushable liquid that takes a relatively long time to make ready for another coat. Since polyurethane is a plastic, each layer is independent of the next -- they do not "melt" into one another as lacquers do.
Despite being available in variances, polyurethane is more durable. It is thick and leaves a strong coating. Lacquer is thin and penetrates the wood surface. It is also durable but susceptible to scratches and discoloration after some time. Polyurethane is thicker and needs a brush to apply it. There could be some brush marks on your surface after applying it.
You need a fine brush to prevent that. With the lacquer, you need the high volume low pressure sprayer to spray it on your target.
It applies evenly even though the spray is expensive than the brush. So, in comparison, it is easier to apply lacquer than it is with polyurethane. Polyurethane takes longer to dry out. Within polyurethane variances, the water-based dries faster than the oil-based polyurethane.
Lacquer dries quickly hence it is preferred by many woodworkers. It can dry within 10 minutes whereas polyurethane can take many hours to dry. Because of this quicker drying time, it is easy to apply multiple coats using lacquer than it is with polyurethane. It is easy to apply multiple coats with lacquer. Polyurethane, however, requires more time for it to cure and then sanding for the multiple coats to adhere firmly. Difference Between Polyurethane and Lacquer.
Difference Between Similar Terms and Objects. MLA 8 Madisha, Lusi. Name required. Email required. Please note: comment moderation is enabled and may delay your comment.
There is no need to resubmit your comment. Notify me of followup comments via e-mail. Written by : Lusi Madisha. The pros and cons of lacquers and polyurethane. Varnishes can be applied onsite, though they may be a little messy.
To learn more about carpentry services or to find great local carpenters in Stowmarket, click here to visit Ligna Carpentry today. Or, call to speak to an advisor and get a cost estimate for your project. What Is Varnish? What Is Lacquer? Do They Look Different? Which Finish Lasts the Longest? Are They Applied in the Same Way? Are Carpentry Finishes Flammable? Those that dry with solvent evaporation, ie. And those that dry via a chemical reaction. These are called catalyzed lacquers.
They are generally found at a specialty paint store, and have a very short shelf life. Lacquer can be bought in all finishes; from matte to high gloss. Lacquer is the most forgiving of all topcoats. It is easy because application of a new coat partially re-dissolves the prior coat, and they adhere well and blend together perfectly. Lacquer is the clearest of all topcoats. When you really want the beauty of the natural color of the wood to show through, it is ideal.
However, on some species, lacquer can take away some of the depth and the 3D quality of the wood that is achieved with the amber-toned color warmth of polyurethane. The very best way to apply lacquer is to spray it. This can be with a spray system. Or with aerosol cans. Brushing lacquer is available also. Note: brushing lacquer sprays on perfectly well!
But, spray lacquer dries too fast to be brushed on. There are drawbacks to lacquer however. Lacquer can discolor over a long time. Lacquer has a high VOC volatile organic compound content, which makes it dangerous to use without a respirator that has an organic vapor cartridge. A dust mask will not protect you from the vapors of lacquer.
It can be bought in all finishes, from matte to gloss. And, it can be sprayed on, brushed on, or even wiped on. The wipe on is usually a thinner mix to allow for better leveling.
If the Poly, is brushed on, a natural bristle brush is best to avoid bubbles that could form from a foam brush.
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