Lacquer vs. Sealer — What's the Difference?

Lacquer is known for its ability to dry quickly and form a hard, protective surface, which is often shiny and clear. This makes it popular for use on wood, metal, and other materials needing a durable finish. In contrast, sealers are applied to provide a protective barrier that can stabilize or enhance the underlying material's properties, such as grain in wood.

The application of lacquer typically involves spraying it onto the surface, where it dries by solvent evaporation, creating a solid, tough film. On the other hand, sealers can be applied through various methods, including brushing and spraying, and are designed to penetrate into the substrate, offering protection without necessarily forming a thick surface layer.

Lacquer finishes are often chosen for their aesthetic appeal, as they can enhance the appearance of the surface, providing a high gloss and smooth finish. Whereas, sealers are usually more functional, used to prepare surfaces for further finishing, or to protect from moisture and environmental damage without altering the appearance significantly.

Due to its chemical composition, lacquer is typically less flexible than many sealers and can be susceptible to cracking with age or in response to temperature changes. Sealers, however, often provide a more flexible barrier, accommodating slight movements in the substrate, such as wood expansion or contraction.

Maintenance and repair considerations differ significantly; lacquer finishes, while durable, can be difficult to repair or touch up without redoing the entire surface. Sealers, conversely, can often be reapplied or touched up locally with less risk of visibly contrasting with the original finish.