Acrylic paints are versatile for painting various objects, including outdoor items like birdhouses.

While the paint adheres well to surfaces, exposure to water before it's completely dry can cause the paint to wash off. This can result in missing paint sections and potentially ruin your artwork.

What Is Acrylic Paint?

Acrylic paint consists of pigment mixed in acrylic polymer emulsion. Acrylic polymer emulsion is essentially a water-based paint component that accelerates drying. As the water evaporates quickly, the paint dries faster.

Why Should I Waterproof My Painting?

Although acrylic paints dry quickly and are known for their durability, failing to waterproof them before they dry can lead to damage from spills or rain. Waterproofing ensures your hard work remains intact.

While dry acrylics are water-resistant, applying a varnish adds an extra layer of protection. Varnish, a special type of acrylic gloss, seals your painting effectively.

Why Would Varnishing Help?

Varnishing protects your painting by creating a sealing layer. This safeguards your artwork from water damage and exposure to light, preventing potential fading.

What Makes The Varnish Water-Resistant?

Varnish's composition includes resin, solvent, oil, and driers, making it highly effective at waterproofing. These ingredients ensure your painting remains protected.

How Do I Varnish My Painting?

Varnishing requires a few steps and varies depending on the painting surface. Here’s how to varnish different materials:

Waterproofing Acrylic On Canvas

Canvas is a popular surface for acrylic painting. Priming with gesso is optional but helps seal the painting. Use a polymer varnish for added protection.

Waterproofing Acrylic On Metal

Acrylics adhere well to metal surfaces like doorknobs and lamp bases. Apply one coat of poly varnish for effective waterproofing.

Waterproofing Acrylic On Wood

After painting on wood, apply two coats of polymer varnish, allowing a day between coats for drying.

Waterproofing Acrylic On Masonite

Masonite, a thin wood fiber material, requires one coat of polymer varnish for sealing.

Waterproofing Acrylic On MDF

Prime MDF with gesso before painting. Apply one coat of poly varnish for protection.

Waterproofing Acrylic On Plastic

Multiple coats of paint may be needed for plastic. Finish with a quick coat of varnish.

Waterproofing Acrylic On Glass

Glass can be varnished by letting it dry for three weeks or baking it in the oven at 350°F for 30-45 minutes. Baking may produce fumes, requiring oven cleaning afterward.

Do I Need Special Tools To Apply The Varnish?

While no special tools are required, a foam poly brush is recommended for even application. Ensure you paint evenly and avoid resting the brush too long on one area.

Will The Varnish Ruin My Brush?

Proper cleaning with water prevents brush damage. Alternatively, spray varnish can be used, though multiple layers may be needed for full coverage.

Types Of Varnishes For Acrylics

Acrylic varnishes come in gloss, matte, and satin finishes. Matte varnish offers a shinier finish, while satin varnish provides sun protection and a glossy coat.

Something To Consider

Priming your surface before painting enhances the varnish's effectiveness and adds shine to your artwork. Following these steps ensures your painting remains protected and visually appealing.