Epoxy Floor Calculator
Planning an epoxy floor coating project requires accurate material estimates to ensure complete coverage and professional results. Our epoxy floor calculator helps you determine exactly how much epoxy coating and primer you need based on your floor dimensions and desired number of coats. Whether you're coating a garage floor, warehouse, or commercial space, get precise calculations for material quantities and cost estimates to budget your project effectively.
Enter the length of your floor in feet
Enter the width of your floor in feet
Typically 2 coats for residential, 3 for commercial
Optional: Average cost is $50-$80 per gallon
Optional: Average cost is $35-$55 per gallon
How much epoxy do I need for my garage floor?
For a standard two-car garage (approximately 400-600 square feet), you typically need 2-3 gallons of epoxy for a single coat. Since most epoxy applications require two coats, plan for 4-6 gallons total. Calculate exact amounts by multiplying floor area by number of coats, then dividing by coverage rate (typically 200-250 square feet per gallon for epoxy). Always purchase 10-15% extra to account for waste, absorption into concrete, and touch-ups.
Do I need primer for epoxy flooring?
Primer is highly recommended for epoxy floor applications, especially on bare concrete, porous surfaces, or older floors. Primer improves adhesion, seals the concrete to prevent air bubbles, and ensures even epoxy coverage. Use approximately the same amount of primer as your first epoxy coat. On well-prepared, newer concrete with low porosity, you may skip primer, but applying it significantly improves durability and finish quality of the final coating.
How long does epoxy flooring last?
Quality epoxy floor coatings last 10-20 years in residential garages and 5-10 years in high-traffic commercial spaces when properly installed and maintained. Longevity depends on surface preparation, epoxy quality, number of coats applied, and usage intensity. Two-part epoxy systems last longer than single-component products. Regular cleaning, avoiding harsh chemicals, and using floor mats in high-wear areas extends lifespan. UV-resistant topcoats prevent yellowing and maintain appearance.
What is the coverage rate for epoxy flooring?
Most epoxy coatings cover 200-250 square feet per gallon depending on the product viscosity, concrete porosity, and application method. Thicker coats provide better durability but reduce coverage. Always check manufacturer specifications as coverage varies by brand. Porous or textured concrete absorbs more epoxy, reducing coverage. Apply a primer coat first to seal the surface and improve topcoat coverage rates.
How do I prepare concrete for epoxy coating?
Proper surface preparation is critical for epoxy adhesion and longevity. Clean the floor thoroughly to remove oil, grease, dirt, and existing coatings. Etch the concrete with muriatic acid or use diamond grinding to open pores and create a rough surface profile. Repair all cracks and spalls with epoxy filler. The surface must be completely dry before application. Temperature should be 50-90°F with humidity below 85%. Test for moisture by taping plastic sheets to the floor overnight—condensation indicates too much moisture.