Short answer: a typical 8 ft × 2 ft bar top takes about 1.25 gallons of mixed epoxy for one ⅛" flood coat, around 1.5–1.7 gallons with edges and drip loss. Plan a thin seal coat too if the wood is bare.
Top volume = length × depth × thickness. Edges are estimated as the perimeter × edge height × a thin 1/16" film, since epoxy runs off vertical edges rather than building up. Divide cubic inches by 231 for gallons.
| Bar size | Epoxy |
|---|---|
| 6 ft × 18 in | 0.81 gal |
| 8 ft × 2 ft | 1.43 gal |
| 10 ft × 2 ft | 1.79 gal |
| 12 ft × 2 ft | 2.15 gal |
| 8 ft × 3 ft | 2.15 gal |
Chart excludes edges.
About 1.25 gallons for a ⅛" coat on an 8 × 2 ft top, roughly 1.5 gallons with edges and drips.
Most bar and tabletop epoxies self-level to about ⅛" per coat. For a thicker finish, do multiple coats rather than one thick pour.
On bare wood, yes. A thin scraped seal coat stops air bubbling out of the wood into the flood coat. Add about 25% of a flood coat's volume.
Use bar/tabletop epoxy for the hard, heat-resistant top coat. Deep pour is softer and for thick fills.
Related: 4×8 sheet · countertop calculator · tabletop coating · project cost
As an Amazon Associate, ResinMath earns from qualifying purchases.