How Much Epoxy Resin Do I Need? Tabletop, River Table and Coats

The volume of epoxy is length × width × depth. A tabletop 48 × 24 in with a 1/8 in coat needs 88 fluid ounces (0.69 gallons) with 10% extra, mixed as 44 fl oz resin and 44 fl oz hardener at 1:1. The epoxy resin calculator does your size, depth and mix ratio.

Epoxy for common sizes and depths

Fluid ounces, including 10% extra, rectangular pour:

A 48 × 24 in pour at different depths

Tips for a good pour

• Mix exactly by volume, with calibrated cups, and stir for the time on the label, scraping the sides and the bottom.
• Work in the right room temperature, 70 to 80°F, with the resin warmed to thin it and release bubbles.
• Seal wood first, and seal edges and cracks, so air does not escape and bubble up.
• Pour a thin layer at a time for deep casts, and let each layer gel before the next, as the maker says.
• Pop bubbles with a heat gun or a torch passed quickly over the surface, and cover the pour against dust.
• Wear a respirator, gloves and eye protection, and work in a ventilated room.

Mistakes to avoid

• Mixing a ratio by weight when the label gives volume, or the reverse.
• Pouring too thick in one go, which overheats the epoxy and yellows or cracks it.
• Not leveling the work before the pour. Epoxy finds its level, and any slope shows.
• Ordering too little. A second batch never matches the first exactly.

Estimates only: follow the product label.

Frequently asked questions