Garage Floor Epoxy Calculator
Epoxy Materials Needed
Calculate epoxy and coating materials for your garage floor
Garage Floor Coating Cost
Compare DIY vs professional garage floor coating costs
Formula
Gallons = (Area / Coverage Per Gallon) × Number of Coats | Flakes (lbs) = Area × Density / 10 | Primer = Area / 250
Frequently Asked Questions
How much epoxy do I need for a 2-car garage?
A typical 2-car garage (20'×24' = 480 sq ft) needs 4-5 gallons of 2-part epoxy for 2 coats, plus 2 gallons of primer and 2 gallons of clear topcoat if using decorative flakes. A DIY kit for this size costs $300-$600; professional installation costs $2,500-$5,000.
How long does garage floor epoxy last?
DIY 1-part epoxy: 2-5 years. DIY 2-part epoxy: 5-10 years. Professional 2-part epoxy: 10-20 years. Polyurea/polyaspartic: 15-25+ years. Lifespan depends heavily on surface preparation quality. Diamond grinding produces the best adhesion.
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