Difference Between Oil Size Gilding and Water Gilding

 1. Oil Size Gilding

- Definition

Oil size gilding is a technique where gold leaf is applied using an oil-based adhesive (size). The adhesive takes a few hours to dry to the right level of tackiness before the gold leaf can be applied.

- Characteristics

More durable and weather-resistant than water gilding.

Suitable for outdoor objects like signs, picture frames, and sculptures.

Less delicate and does not require burnishing (polishing to a mirror finish).

2. Water Gilding

- Definition 

Water gilding uses a water-based adhesive (gesso and bole), which must be activated with water before applying gold leaf. This technique allows for burnishing to achieve a mirror-like shine.

- Characteristics

Produces a highly polished, mirror-like finish when burnished.

More delicate and suitable for fine art, antique restoration, and high-end furniture.

More difficult to execute and sensitive to humidity.

Why Use Different Techniques? 

1. Outdoor vs. Indoor

- Oil gilding is more durable and ideal for outdoor exposure.

- Water gilding is delicate and best for indoor decorative objects.

2. Aesthetic Finish

- Oil gilding has a softer, satin-like appearance.

- Water gilding can be highly polished to a reflective, mirror-like surface.

3. Application Complexity

- Oil gilding is easier and more forgiving.

- Water gilding requires skill and precise conditions.

The picture below is a drawer decorated by artist Joanne Kim using oil gilding, gold paint, etc.