Epoxy Calculator

Gal/coat = 400 x (10 x 0.001 / 12) x 7.481 = 2.49 gal. Two coats with 10% waste = 5.49 gal total. Round up to 6 gallons or 4 kits of 1.5 gal.

1 mil = 0.001 inch (one thousandth of an inch). Standard floor epoxy applies at 6-10 mils per coat. 10 mils is about the thickness of a credit card.

Typically 2 coats: a base coat and a topcoat. Some systems use a primer, base coat, and clear topcoat (3 coats) for maximum durability.

Coverage (sq ft/gal) = 1,604 / spread rate in mils (theoretical). At 10 mils: 1,604 / 10 = 160 sq ft/gal theoretical. Expect 130-150 sq ft/gal practical with waste.

Water-based epoxy is lower in VOCs, easier cleanup, and safer for indoor use. Solvent-based has better adhesion, higher film build, and better chemical resistance. For residential garages, a 100% solids epoxy offers good performance. Industrial floors typically use 100% solids epoxy for maximum durability.

Yes. Concrete must be profile-etched (acid etch or shot blast) to create a mechanical bond. Diamond grinding gives the most consistent profile. Skip this step and the epoxy will peel within a few months. Test moisture levels - concrete must be below 4 lbs per 1,000 sq ft per 24 hours on the calcium chloride test.

A properly applied epoxy floor coating lasts 5-10 years in a residential garage, 3-5 years in a commercial setting, and 1-3 years in industrial or heavy-traffic environments. Reapply a topcoat (polyurethane or polyaspartic) over the epoxy to extend UV resistance and abrasion life.