how to seal a watercolor painting

how to seal a watercolor painting

one of the most important aspects of preserving your watercolor masterpiece is ensuring it remains vibrant and protected for years to come.

Understanding the Need for Sealing Watercolor Paintings

Watercolors, with their delicate pigments and translucent nature, can be prone to fading and damage over time. The surface of a watercolor painting often becomes porous after the initial application of water and pigment, making it susceptible to moisture and dust. Sealing the artwork not only enhances its appearance but also shields it from environmental factors that could compromise its longevity.

Methods for Sealing Your Watercolor Painting

There are several methods you can use to seal your watercolor paintings, each offering unique benefits and considerations:

1. Using Varnish

One of the most common methods for sealing watercolors is using varnish. Acrylic varnish is particularly popular as it dries quickly, adheres well to watercolors, and offers excellent protection against UV light, which can cause fading. GAC 900, a high-quality acrylic varnish, is widely used in professional settings due to its durability and ability to provide a glossy finish without altering the color of the paint.

Why is varnish an essential step?

Varnishing seals the surface of your watercolor painting, preventing the colors from bleeding or fading due to exposure to air and sunlight.

2. Applying Wax Resin

For a more natural look and feel, some artists opt for wax resin sealing. This method involves heating beeswax and resin until they melt, then brushing the mixture onto the painting. The wax forms a protective barrier on the surface while allowing the colors to remain visible through the translucent coating.

What makes wax resin appealing?

Wax resin provides a soft, matte finish that mimics the texture of traditional oil paintings. It’s particularly suitable for artworks where a subtle, unobtrusive seal is desired.

3. Using a Clear Coat

Another effective method is applying a clear coat, such as a polyurethane or lacquer, directly to the watercolor painting. These finishes offer strong protection against moisture and dirt while maintaining the original appearance of the artwork.

How does a clear coat benefit your watercolor?

A clear coat creates a durable, water-resistant layer that shields your painting from accidental spills, humidity, and other elements that might otherwise damage the delicate pigments.

4. DIY Sealant Recipes

Some artists prefer to create their own sealants using household items like cooking oils, mineral spirits, or even food coloring. While these homemade solutions may work, they typically lack the consistency and quality control of commercial products.

What are the pros and cons of DIY sealants?

DIY sealants can be cost-effective and allow for customization, but they often require careful mixing and application to ensure uniform coverage and proper adhesion.

Conclusion

Sealing your watercolor painting is crucial for extending its life and preserving its beauty. Whether you choose a commercial varnish, wax resin, clear coat, or a DIY solution, the goal is to protect your artwork from the elements and maintain its integrity. By taking the time to properly seal your watercolors, you’ll enjoy them for many years to come, knowing they are safeguarded against the challenges of the world outside.

  1. Q: What kind of varnish works best for watercolors?

    • A: Acrylic varnish is highly recommended due to its quick drying time, excellent adherence to watercolors, and ability to resist fading caused by UV light.

  2. Q: Can I use any type of varnish for my watercolor painting?

    • A: While many types of varnishes can be used, it’s best to choose one specifically designed for watercolors, such as GAC 900 or similar brands known for their compatibility with watercolor pigments.

  3. Q: How long does it take for the sealant to dry completely?

    • A: Varnishes typically dry within 24 hours, but it’s advisable to wait at least 24 hours before handling or displaying your painting to ensure full drying.