Lacquer vs Varnish vs Polyurethane: when to use each finish?
When it comes to finishing wood, there are lots of different options. There exists no “right answer” when choosing the best finish for any project. The finishing process choice depends on various factors, such including cost, ease of application, environmental concerns, and durability. Let’s look at the differences between varnish, lacquer vs polyurethane and when you should use each.
Lacquer-
Lacquer is a quick-drying, synthetic resin that comes in various colours. It dries quickly because it is “solvent-based,” which dries when a volatile solvent evaporates. Lacquer is the least durable of all the finishing methods.
Varnish-
Varnish is a paint usually used to seal and protect the wood. Varnishes are a “water-based” finish, meaning they dry when water evaporates. It is the most durable finish on this list, but it is also more labour — intensive than lacquer and polyurethane.
Polyurethane-
Polyurethane is a synthetic resin often used as a wood finish but has excellent uses on many other materials. It is a “ water-based” finish, which means that it dries when water evaporates. Polyurethane is similar to varnish in that it is more durable than lacquer. It is the most labour — intensive of the finishes on this list. It usually requires a couple of coats, sanding, and another coat or two.
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When to use- Lacquer, Varnish, Polyurethane
Lacquer-
Lacquer is best used as a decorative finish that is applied over a different finish. Lacquer is the least durable of the three finishes discussed here, so it should usually be used on projects that aren’t meant to last a long time. Lacquer is quick to apply and can be used on indoor and outdoor projects.
Varnish-
Varnish is best used for projects meant to last a long time. Varnishes can be applied over lacquer or polyurethane, so you can choose whichever finish you want to use. Varnishes are more durable than lacquer, so they are better for projects that need a long lifespan.
Polyurethane-
Polyurethane enhances any wood surface’s appearance and is best used in areas with moisture issues. It safeguards the wood from damage and can create a high gloss finish. Polyurethane can also help fix water damage and dry rot on decks, porches, and other wooden surfaces. It can help add water resistance to wood surfaces, making them more strong and less prone to water damage and rot. Another benefit of polyurethane is its ability to resist discolouration and yellowing over time. It means the finish will stay fresh-looking for years to come.
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