What to Do if Bubbles Appear in Epoxy Resin After Application

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Finding bubbles in your freshly applied epoxy resin can be frustrating, but with a few mindful steps, you can deal with them and achieve a glossy, professional look.

Identifying and Removing Bubbles

If you notice air bubbles after applying your epoxy resin, act before the resin begins to cure. Hold a heat gun set on low or gently pass a flame (such as from a torch or lighter) over the surface, keeping it moving to avoid scorching. The warmth encourages bubbles to rise and pop, resulting in a smooth finish. For larger areas, work in sections and observe as you go to ensure all bubbles are addressed.

Tips to Prevent Bubbles Next Time

• Mix at the right temperature: Cool temperatures can trap more air, so work in a warm, dry space if you can.
• Mix gently: Stir epoxy slowly and thoroughly, avoiding vigorous agitation that introduces unnecessary air.
• Use the right tools: Applying resin with an even spread using a Tooth Shaped Spatula or a suitable roller can create a more uniform surface, reducing the likelihood of defects and unwanted bubbles.

When Bubble Removal Matters Most

Minimising bubbles is crucial when clarity, gloss, or smoothness is essential—such as on tabletops, art pieces, or decorative floors. In thicker pours, trapped air pockets can also impact durability, so bubble removal is especially important for these projects.

Related products

• Tooth Shaped Spatula for Epoxy Resin Application
• Resin & Paint Application Rollers – Short-Pile, Large, and Sponge Types
• "Epoxyprimer" – Universal Water-Based Two-Component Epoxy Floor Primer

Related guides

• How To Apply Epoxy Resin With A Trowel

Addressing bubbles promptly leads to a much more impressive epoxy resin finish. To dive deeper into application techniques, be sure to explore our main guide on applying epoxy resin with a trowel for consistently smooth results.