How to Remove Bubbles from Resin on Canvas

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How do I remove bubbles from resin on canvas?

Bubbles in resin on canvas can interrupt the smooth, glossy finish artists desire. Luckily, with the right method, you can achieve a clear, professional resin surface every time.

Why Do Bubbles Appear in Resin?

Bubbles often form when mixing epoxy resin and hardener, or as air gets trapped while pouring over textured surfaces like canvas. Some bubbles may also be released from the canvas itself, particularly if it’s not pre-sealed. Using a high-quality, self-levelling resin—such as Art Pro—can help minimise initial bubble formation.

Effective Bubble Removal Techniques

After pouring resin, inspect the surface for visible bubbles. The most reliable way to remove bubbles is by lightly passing a torch or heat gun across the surface within minutes of pouring. The heat causes bubbles to rise and quickly pop. Keep the torch or heat gun moving and avoid lingering in one spot, which reduces the risk of overheating or damaging the resin.

Begin by working in a dust-free, dry space.
Hold the torch or heat gun a few inches above the resin.
Move in sweeping motions across the entire surface.
Repeat once or twice if necessary, watching for any remaining bubbles.

For small projects or touch-ups, a drinking straw can be used to blow gently on stubborn bubbles at close range.

When This Matters Most

Removing bubbles is especially important when coating canvas art that features clear or tinted resin layers, as imperfections are easily seen in glossy finishes. If you’re creating detailed resin art or want a glass-like coat, bubble removal is crucial for a flawless presentation.

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How To Make Resin To Coat Canvas

Mastering the bubble removal process helps you achieve stunning, glass-like resin coatings on canvas. For more tips and complete guides, visit our full resource on how to make resin to coat canvas.