Should You Sand Between Epoxy Coats for Wood?

Sand Between Epoxy Coats for Smooth Adhesion

Achieving a flawless epoxy finish on wood takes more than one coat. Sanding between layers is a crucial step to ensure each coat adheres properly and results in a professional, glass-like surface.

Why Sand Between Epoxy Coats?

Epoxy resin forms a hard, glossy layer as it cures, which can sometimes lead to surfaces too smooth for the next layer to grip. By lightly sanding between coats, you create a fine texture (or ‘key’), allowing the next application of resin to bond thoroughly. This helps prevent delamination and other imperfections.

Best Sanding Practices

Allow your previous coat to fully cure before sanding—typically overnight, but always check your product instructions. Use fine grit sandpaper (usually 220 to 320 grit) and sand evenly by hand or with a gentle orbital sander. Wipe away all dust with a clean, dry cloth before pouring the next layer, as debris can cause cloudy spots or roughness in the final finish. For specialist wood projects, a product like EpoxyTable 5-Five pairs beautifully with this process for strong, clear results.

When This Matters Most

Building up deep pours for river tables or encapsulations
Restoring or waterproofing wood with multiple resin applications, such as with EpoxyWood
Creating high-gloss, decorative finishes where evenness and clarity are essential

Related guides

How To Epoxy Coat Wood

Sanding between epoxy coats is a small step with a big impact. For more guidance on creating beautiful, resilient surfaces, see our full guide on how to epoxy coat wood.