Estimate how much epoxy or floor coating your garage needs. Enter the floor size, number of coats, and the coverage on the product label.
Coating Needed
— gallons
Rounded up to full gallons.Usage Tip
Measure your actual floor rather than trusting the car-bay label on the kit — bays vary. Buy one extra quart of base for the thirsty first coat on bare concrete.
THE MATH
Floor area = Length × Width
Coating area = area × number of coats
Gallons = round up (coating area with waste ÷ coverage per gallon)
Coating area = area × number of coats
Gallons = round up (coating area with waste ÷ coverage per gallon)
Coverage per gallon is on the product label — epoxy commonly covers about 250 to 350 sq ft per gallon on the first coat of bare concrete, more on later coats.
Most floors get two coats (or a primer plus topcoat); enter the number you plan.
Most floors get two coats (or a primer plus topcoat); enter the number you plan.
Bare, porous concrete drinks the first coat, so real coverage is often lower than the smooth-surface number on the can — round up.
Garage floor kits are often sold by bay size (a 1-car bay is roughly 250 sq ft, a 2-car about 400 to 500 sq ft); match the kit to your measured area.
Account for prep (etching or grinding) and full cure time; coatings fail on dirty, damp, or unprepared concrete.
Garage floor kits are often sold by bay size (a 1-car bay is roughly 250 sq ft, a 2-car about 400 to 500 sq ft); match the kit to your measured area.
Account for prep (etching or grinding) and full cure time; coatings fail on dirty, damp, or unprepared concrete.