— gal
Epoxy Coverage Calculator
Gallons needed from area, coverage rate per coat, and coat count -- first coat and additional coats shown separately.
You'll need — gal of epoxy to cover — sq ft.
Area source
Use the active Room Layout's floor area or override manually.
Chained floor area
Run Room Layout first to prefill epoxy coverage with the active project's floor area.
Epoxy coverage inputs
Enter your product's actual coverage rate per coat.
You'll need — gal of epoxy to cover — sq ft.
You'll need
Epoxy coverage estimate
— gal
— gal
Warnings
- ERROR Enter an area greater than zero.
Detail values
- Total gallons
- — gal
Assumptions
- Coverage rate: 200 sq ft/gal per coat (enter your product's actual coverage)
- Coat count: 2
Included: first coat, additional coats.
Not included: labor, delivery, permits, disposal of waste material.
Formula details
- Epoxy to buy: ceil(area x coatCount / coverage)
One rounding, on the whole job. Rounding each coat up to a whole gallon and summing bought a gallon nobody applies -- the coats come out of the same unmixed kit.
- First coat: area x min(coatCount, 1) / coverage
- Additional coats: area x max(coatCount - 1, 0) / coverage
Material List
About this calculator
Enter the area to cover and your product's coverage rate per gallon per coat.
FAQ
Why are first coat and additional coats separate?
Some epoxy systems use a different coverage rate for the first (seal) coat versus additional coats -- this calculator shows both as separate line items, same pattern as this app's Paint calculator splitting primer from topcoat.