Should You Sand Between Coats When Spraying Epoxy?

Do I Need to Sand Between Coats When Spraying Epoxy?

When spraying epoxy resin for decorative or protective projects, you may wonder if sanding between coats is necessary. Good preparation and finishing steps can make a noticeable difference in the final look and feel of your piece.

Why Sand Between Coats?

Sanding between coats of sprayed epoxy resin is optional, but it serves several useful purposes. Light sanding can smooth out minor imperfections, address dust or uneven coverage, and help deliver a more uniform, glass-like finish. This practice is especially beneficial for decorative surfaces where clarity and gloss are priorities.

How to Sand Epoxy Resin Safely

Allow each coat of epoxy or lacquer to fully dry before sanding. Use a fine-grit sandpaper (between 320–600 grit) and sand gently by hand or with a sanding block. Wipe away any residue with a clean, lint-free cloth before applying the next coat.

Dust removal is important to avoid imperfections in the next layer.
If you use a high-gloss spray finish such as the 2K Clear Coat Lacquer Aerosol Spray, ensure the previous layer is dry but not fully cured for best adhesion.

When Does Sanding Matter Most?

Sanding is particularly helpful if you spot runs, bubbles, or texture between coats. For transparent or high-gloss effects, like those achieved with Macote KZ 100 Gloss Spray Lacquer, preparing each layer ensures the light reflects evenly, enhancing shine and depth.

Related guides

How To Spray Epoxy Resin

For those seeking a flawless, professional-looking epoxy resin finish, careful sanding between coats can be the key to outstanding results. Explore more tips and techniques in our full guide on how to spray epoxy resin.