How To Varnish Your LARGE Acrylic Painting

How do you achieve long-lasting protection for your large acrylic portrait?

Introduction

Varnishing your acrylic painting is an essential step to protect it and give it a professional finish. In this guide, we’ll cover how to varnish a large acrylic painting, ensuring your artwork looks its best and remains protected for years to come.

Why is varnishing your large acrylic portrait important?

Varnishing your painting not only enhances its appearance by evening out the sheen but also protects it from UV rays, dust, and scratches. It adds a professional touch, making your artwork look polished and complete.

Supplies You’ll Need

Before you start varnishing, gather the following supplies:

Varnishing Brush: A large 10-inch brush is ideal for covering large areas quickly and evenly.
Matte Varnish: Opt for a high-quality matte varnish. A satin finish can provide a subtle shine without being too glossy.
Container: Use a clean container for your varnish. An old yogurt container works well.
Stir Stick: Ensure the varnish is well-mixed before application.
Rag: Keep a rag handy for wiping off any drips.
Pipe Wrench: This might be necessary to open a stuck varnish container.

Preparation Steps

Stir the Varnish: Over time, varnish can separate. Stir it thoroughly with a stir stick to ensure it’s well-mixed. If stirring isn’t an option, gently shake the container.
Clean Your Canvas: Wipe off any dust or debris from your painting using a clean rag. This step is crucial to avoid trapping particles under the varnish.
Lay the Canvas Flat: Position your painting flat on a table to prevent drips and ensure an even application.

Applying the Varnish

Start Far Away: Begin varnishing from the farthest point on the painting and work your way towards yourself. This method helps avoid drips and ensures a smooth application.
Dip and Brush: Dip your brush into the varnish container, ensuring both sides are evenly coated. Start about a quarter of the way from the edge and brush across the canvas.
Smooth Strokes: Use long, smooth strokes to apply the varnish. Avoid overbrushing, which can cause streakiness.
Overlap Strokes: Slightly overlap each stroke to ensure even coverage. Reload your brush as needed.
Wipe Drips: Wipe off any drips that occur on the sides of the painting using a rag.

Tips and Techniques

Don’t Overbrush: Overbrushing can lead to cloudiness and streakiness. Apply the varnish in one or two smooth strokes and leave it to dry.
Keep a Wet Edge: Maintain a wet edge as you work to prevent the varnish from drying too quickly and causing streaks.
Check for Streaks: Pay extra attention to dark areas of the painting, where streaks are more visible.
Drying Time: Allow the varnish to dry for a few hours. It should be dry to the touch within an hour and fully dry within four hours, depending on the temperature and humidity.

Common varnishing your large acrylic portraits mistakes to avoid

Varnishing can be a straightforward process, but there are common mistakes that can be easily avoided with a bit of caution:

Skipping the Stirring: Always stir your varnish before application to avoid uneven sheen and consistency.
Overbrushing: Applying too many strokes can cause the varnish to become cloudy. Less is more in this case.
Incorrect Drying Position: Never dry your painting vertically. Always lay it flat to prevent drips and runs.
Ignoring Dust: Ensure your work area and canvas are dust-free before starting to varnish. Dust particles can become trapped and ruin the smooth finish.

Frequently asked questions about varnishing large acrylic paintings

1. What kind of varnish do I use?

For varnishing large acrylic paintings, I recommend using a matte varnish, specifically one that dries to a satin finish. I use a matte varnish from Nova Color, which comes in gallon jugs that I transfer into quart-sized containers for easier use. This type of varnish not only enhances the appearance of your painting but also provides UV protection and a professional finish.

2. What kind of brush?

A large brush is essential for varnishing large paintings effectively. I use a 10-inch Liquitex varnishing brush. This brush covers a lot of ground quickly and ensures an even application of the varnish. It’s important to have a brush that’s wide enough to make long, smooth strokes across your canvas.

3. Should I use an isolation coat?

In my process, I do not use an isolation coat. Instead, I treat the varnish layer as another layer of acrylic. The reason behind this is the flexibility to restore or touch up the painting if needed. Since the matte varnish is essentially clear acrylic without pigment, it can be painted over if any issues arise over time.

4. How should I apply the varnish?

To apply the varnish, follow these steps:

Start by wiping off any dust from the canvas with a clean brush or cloth.
Lay your canvas flat on a table to prevent drips.
Stir the varnish well to mix any separated components.
Pour a small amount of varnish into a container.
Dip your brush into the varnish and start applying it from the area farthest away from you, working your way inward.
Use long, even strokes and avoid overbrushing to prevent streakiness and cloudiness.
Overlap your strokes slightly and lift the brush at the end of each stroke to maintain a wet edge.
Allow the varnish to dry completely, which usually takes a few hours for a large painting.

5. Why should I varnish a painting in the first place?

Varnishing your painting serves several important purposes:

It enhances the overall appearance by evening out the sheen and bringing out the colors.
It provides a protective layer against UV rays, dust, and other environmental factors.
It gives your artwork a professional finish, making it more appealing to clients and viewers.
It helps preserve the painting over time, ensuring it looks its best for years to come.

6. How often should I varnish my paintings?

Once varnished, your painting typically does not need to be re-varnished. However, if the varnish gets damaged or wears off over time, you can apply another coat after proper cleaning.

7. Can I use the same varnish for all my paintings?

It depends on the finish you desire. Matte varnish provides a non-reflective finish, while gloss varnish gives it a shiny appearance. Choose the varnish based on your preference for each artwork.

8. What if I make a mistake while varnishing?

If you notice a mistake while the varnish is still wet, you can carefully remove it with a damp cloth and reapply it. Once dry, mistakes can be challenging to fix, so it’s best to apply varnish carefully and avoid overbrushing.

Watch the full video tutorial below!

Varnishing your large acrylic painting is a crucial step in preserving and enhancing its beauty. By following these steps and tips, you can achieve a professional finish that protects your artwork and makes it shine. Remember to gather your supplies, prepare your canvas, and apply the varnish with care. Happy painting!

How To Varnish Your LARGE Acrylic Painting

How do you achieve long-lasting protection for your large acrylic portrait?

Introduction

Why is varnishing your large acrylic portrait important?

Supplies You’ll Need

Preparation Steps

Applying the Varnish

Tips and Techniques

Frequently asked questions about varnishing large acrylic paintings

LEARN MORE

Read more about how to paint a portrait that you can surely be proud of!

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