The following yields for coverage are based on one gallon of mixed epoxy, which contains the resin and hardener, combining to make one gallon.
When poured as a coating, slab pour, or sealing a surface:
One gallon of mixed epoxy (no waste, no loss) will yield*:
- About 25.6 square feet at 1/16" thickness
- About 12.8 square feet at 1/8" thickness
- About 6.4 square feet at 1/4" thickness
When epoxy is used for wetting reinforcing fabrics such as fiberglass:
The following are general estimates for epoxy coverage when wetting out some common types of fiberglass material. Note that these estimates are based on wetting out one layer**.
- 4 oz. fiberglass cloth - One gallon of mixed epoxy wets out approximately 37.5 square yards
- 6 oz. fiberglass cloth - One gallon of mixed epoxy wets out approximately 25 square yards
- 10 oz. fiberglass cloth - One gallon of mixed epoxy wets out approximately 15 square yards
- 1708 biaxial fiberglass cloth with mat backing (23.75 oz. per square yard) - One gallon of mixed epoxy wets out approximately 6.4 square yards
- Fiberglass CSM (chopped strand mat) - One gallon of mixed epoxy wets out approximately 5 square yards
- Fiberglass 18 oz. woven roving - One gallon of mixed epoxy wets out 4.5 square yards
- Fiberglass 24 oz. woven roving - One gallon of mixed epoxy wets out 3.5 square yards
* This does not account for any product waste. Conservatively, consider that 15-20% will be lost to waste material in the mixing cup, any extra drips, brushes used for application, and epoxy left on rollers, spreaders, or other tools.
** This number only represents how much epoxy is required to wet out a specific fiber, and does not account for any extra epoxy that is applied to a substrate before wetting out the epoxy, or epoxy used between layers of fabric. Conservatively, consider that 15-20% will be lost to waste material in the mixing cup, any extra drips, brushes used for application, and epoxy left on rollers, spreaders, or other tools.