Which type of varnish is most commonly used?

The most commonly used type of varnish is solvent-based urethanes. This type of varnish is favored for its durability and resistance to scratches and chemicals, making it ideal for high-traffic areas or surfaces that require extra protection. Solvent-based urethanes offer a strong finish that enhances the natural beauty of wood while providing a tough layer of protection against wear and moisture.

Water-based varnishes, while gaining popularity for their lower environmental impact and easier clean-up, might not provide the same level of durability as solvent-based urethanes in certain applications. Acrylic varnishes are valued for their quick drying times and ease of use but generally do not match the toughness of solvent-based options. Shellac varnishes, though traditional and offering a warm finish, are less commonly chosen for high-durability needs because they are more sensitive to moisture and cannot withstand heat as well as urethane-based varnishes.