How to Prevent Bubbles & Yellowing in Resin When It's Hot

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How to Prevent Bubbles and Yellowing When Pouring Resin in the Heat

Pours in a hot workshop call for careful technique and resin selection to minimise bubbles and discolouration. With a few practical adjustments, you can achieve flawless, crystal-clear results—even when the temperature rises.

Select the Right Resin for Warm Conditions

Begin with a low-viscosity resin engineered for deep pours and heat resistance. Products like Epoxytable 10-Ten and EpoxyTable 5-Five are formulated for stable pouring up to 70°C, with integrated UV filters to guard against yellowing. These characteristics help limit air entrapment and discolouration, even in warmer settings.

Pouring Technique: Minimising Bubbles and Sunlight Exposure

Always pour your resin steadily and avoid rushing the process. Working in small sections and allowing the mixture to self-level before adding more helps air escape. If possible, keep your project and materials away from direct sunlight, as heat builds up quickly and can increase bubble formation or premature yellowing. Use a clean, shaded workspace and allow the materials to acclimatise to room temperature before mixing.

When This Matters Most

You’re pouring large or deep resin projects on a hot day
Your workspace is exposed to afternoon sunlight
You want transparent, long-lasting finishes with minimal defects

Related guides

Can I Pour Resin When It Is Very Hot In The Workshop

With the right approach and products, pouring resin during the summer months or in a warm workshop doesn’t have to mean bubbles or yellowing. Discover more guidance on maintaining flawless resin pours whatever the conditions back at our main hot weather resin guide.