Shellac

Shellac

Overview

Shellac is a natural resin secreted by the lac insect (Kerria lacca), harvested, and processed into flakes that dissolve in denatured alcohol. It has been used for centuries as a wood finish, protective coating, and traditional adhesive in woodworking, picture framing, and gilding applications. Shellac produces a glossy, durable finish that enhances the natural beauty of wood and can serve as a base for additional coatings.

Applications

• Sealing and finishing wood surfaces in furniture and frames.
• Serving as a base layer in water gilding and other decorative finishes.
• Traditional French polishing techniques for high-gloss wood surfaces.
• Temporary adhesive or sizing in conservation framing and restoration.

Best Practices

• Dissolve shellac flakes in denatured alcohol for consistent application.
• Apply in thin layers to avoid streaks, drips, or uneven buildup.
• Sand lightly between coats for a smooth finish.
• Use in a well-ventilated area due to alcohol fumes.
• Combine with protective topcoats, such as wax or clear coat, for enhanced durability.

Related Terms

• Water Gilded
• Clear Coat
• Finish
• French Polish