About this calculator
How many epoxy kits a garage, workshop or basement floor needs for the number of coats you plan.
How it’s calculated
Amount = area × coats ÷ coverage. Typical coverage is 200–300 sq ft per gallon per coat at standard film thickness.
Worked example
With these inputs:
- Measure by
- Length × width
- Length
- 15 ft
- Width
- 12 ft
- Coats
- 2
- Coverage per gallon per coat (sq ft)
- 250
- Kit size
- 2 gal
- Decorative flakes
- Yes
the result is:
- Epoxy needed
- 5.5 L
- Area
- 180 sq ft
Tips from the trade
- Grind or acid-etch the concrete first. Adhesion is everything.
- Fresh concrete needs to cure for about 28 days before coating.
- Do a moisture test (taped plastic sheet) before you start.
Results are estimates for planning and pricing. Check quantities against your drawings, the manufacturer’s data and the building code adopted in your province before ordering.