System Three System Three Clear Coat Epoxy — Mix Ratio & Calculator
Data sourced from manufacturer SDS & TDS · Last verified September 01, 2026
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Quick Answer
System Three System Three Clear Coat Epoxy mix ratio: 2:1 by volume, 2:0.91 by weight
Max pour depth: 0.0625" · Full cure: 12h · Ideal temp: 72°F · Price: $55–$110/gal
⚠️ Exothermic Risk — The weight ratio (2:0.91) is NOT 1:1. Resin and hardener have different densities. Using a 1:1 scale ratio will result in incorrect curing. Always mix by weight using the ratio above.
Ultra-thin clear coating epoxy for high-gloss finishes on wood, metal, and composite surfaces. Low viscosity allows self-leveling at very thin applications. Excellent UV resistance for outdoor projects. Used by boat builders for clear wood finishes.
| Volume Mix Ratio (A:B) | 2:1 |
| Weight Mix Ratio (A:B) | 2:0.91 — use this for scale mixing |
| Max Pour Depth | 0.0625" / 1.5mm |
| Ideal Temperature | 72°F |
| Full Cure Time | 12 hours |
| Viscosity | 450 cps |
| Coverage | 30 sq ft/gal |
| Average Price | $55–$110/gal (Surface Coating market avg, 2026) |
Safety Note
The weight ratio (2:0.91) is NOT 1:1. Resin and hardener have different densities. Using a 1:1 scale ratio will result in incorrect curing. Always mix by weight using the ratio above.
The weight ratio (2:0.91) is NOT 1:1. Resin and hardener have different densities. Using a 1:1 scale ratio will result in incorrect curing. Always mix by weight using the ratio above.