{
  "slug": "600-sq-ft-garage-floor-epoxy-calculator",
  "title": "600 sq ft Garage Floor Epoxy Calculator",
  "heading": "600 sq ft Garage Floor Epoxy Calculator",
  "category": "other",
  "url": "https://www.revenuelab.fyi/toolbox/600-sq-ft-garage-floor-epoxy-calculator",
  "summary": "Epoxy kits, primer, flake, and topcoat quantities for a two-car 600 sq ft garage floor.",
  "description": "A standard two-car garage is around 600 square feet, and epoxy coverage is all about mil thickness: the same gallon that covers 300 square feet at 5 mils only covers 150 at 10. A durable system is usually three layers — a penetrating primer, a pigmented base coat with broadcast flake, and a clear polyaspartic or urethane topcoat — and each layer has its own coverage rate. This calculator sizes each layer separately, adds flake by the pound, and totals the material cost so you can compare a DIY kit against a professional install quote, which typically runs $4-$9 per square foot in 2026.",
  "formula": "Gallons per Coat = Area ÷ Coverage Rate. Flake lbs = Area × Flake Density. Cost = Σ (Gallons × Price) + Flake + Prep.",
  "dateModified": "2026-09-06",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=600-sq-ft-garage-floor-epoxy-calculator",
  "inputs": [
    {
      "id": "area",
      "label": "Floor area",
      "kind": "number",
      "hint": null,
      "default": 600,
      "unit": "sq ft",
      "min": 50,
      "max": 5000
    },
    {
      "id": "primerCoverage",
      "label": "Primer coverage",
      "kind": "number",
      "hint": null,
      "default": 350,
      "unit": "sq ft/gal",
      "min": 100,
      "max": 600
    },
    {
      "id": "baseCoverage",
      "label": "Base coat coverage",
      "kind": "number",
      "hint": null,
      "default": 200,
      "unit": "sq ft/gal",
      "min": 80,
      "max": 400
    },
    {
      "id": "topCoverage",
      "label": "Topcoat coverage",
      "kind": "number",
      "hint": null,
      "default": 250,
      "unit": "sq ft/gal",
      "min": 100,
      "max": 500
    },
    {
      "id": "gallonPrice",
      "label": "Average price per gallon",
      "kind": "number",
      "hint": null,
      "default": 85,
      "unit": "$",
      "min": 25,
      "max": 250
    },
    {
      "id": "flakeDensity",
      "label": "Flake broadcast rate",
      "kind": "number",
      "hint": null,
      "default": 0.15,
      "unit": "lb/sq ft",
      "min": 0,
      "max": 0.6
    },
    {
      "id": "flakePrice",
      "label": "Flake price per lb",
      "kind": "number",
      "hint": null,
      "default": 4,
      "unit": "$",
      "min": 0,
      "max": 15
    },
    {
      "id": "prepCost",
      "label": "Grinding / etching + supplies",
      "kind": "number",
      "hint": null,
      "default": 250,
      "unit": "$",
      "min": 0,
      "max": 2000
    }
  ],
  "outputs": [
    {
      "id": "totalCost",
      "label": "DIY material cost",
      "format": "currency",
      "hint": null,
      "primary": true
    },
    {
      "id": "totalGallons",
      "label": "Total gallons needed",
      "format": "number",
      "hint": null,
      "primary": false
    },
    {
      "id": "primerGal",
      "label": "Primer gallons",
      "format": "number",
      "hint": null,
      "primary": false
    },
    {
      "id": "baseGal",
      "label": "Base coat gallons",
      "format": "number",
      "hint": null,
      "primary": false
    },
    {
      "id": "topGal",
      "label": "Topcoat gallons",
      "format": "number",
      "hint": null,
      "primary": false
    },
    {
      "id": "flakeLbs",
      "label": "Flake (lbs)",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "perSqFt",
      "label": "Material cost per sq ft",
      "format": "currency",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Floor area: 600 sq ft",
      "Primer coverage: 350 sq ft/gal",
      "Base coat coverage: 200 sq ft/gal",
      "Topcoat coverage: 250 sq ft/gal",
      "Average price per gallon: 85 $",
      "Flake broadcast rate: 0.15 lb/sq ft",
      "Flake price per lb: 4 $",
      "Grinding / etching + supplies: 250 $"
    ],
    "outputs": [
      "DIY material cost: $1,290",
      "Total gallons needed: 8",
      "Primer gallons: 2",
      "Base coat gallons: 3",
      "Topcoat gallons: 3",
      "Flake (lbs): 90",
      "Material cost per sq ft: $2.15"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter floor area (sq ft).",
      "Enter primer coverage (sq ft/gal).",
      "Enter base coat coverage (sq ft/gal).",
      "Enter topcoat coverage (sq ft/gal).",
      "Enter average price per gallon ($).",
      "Enter flake broadcast rate (lb/sq ft).",
      "Enter flake price per lb ($).",
      "Enter grinding / etching + supplies ($).",
      "Read your diy material cost on the right — it updates as you type.",
      "Hit Share to keep the scenario or send it to someone."
    ]
  },
  "scenarios": [
    {
      "name": "Conservative",
      "description": "Lower-end numbers — what if things land soft?",
      "values": {
        "area": 350,
        "primerCoverage": 200,
        "baseCoverage": 120,
        "topCoverage": 150,
        "gallonPrice": 50,
        "flakeDensity": 0.09,
        "flakePrice": 2.4,
        "prepCost": 150
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "area": 600,
        "primerCoverage": 350,
        "baseCoverage": 200,
        "topCoverage": 250,
        "gallonPrice": 85,
        "flakeDensity": 0.15,
        "flakePrice": 4,
        "prepCost": 250
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "area": 950,
        "primerCoverage": 550,
        "baseCoverage": 320,
        "topCoverage": 400,
        "gallonPrice": 135,
        "flakeDensity": 0.24,
        "flakePrice": 6.4,
        "prepCost": 400
      }
    }
  ],
  "limitations": [
    "Estimates assume standard, average conditions — local rules, pricing, and materials vary.",
    "Results are rounded for readability; add a buffer before ordering, booking, or committing.",
    "Double-check anything with a real cost attached against a local quote."
  ],
  "faq": [
    {
      "q": "How much epoxy for a two-car garage?",
      "a": "About 3 gallons of base coat, 2 of primer, and 3 of topcoat for 600 square feet at typical coverage rates — roughly 8 gallons total for a full three-layer system."
    },
    {
      "q": "Do I have to grind the concrete?",
      "a": "Mechanical grinding gives the best bond and is what pros do. Acid etching can work on clean, bare, porous slabs, but it fails on sealed or oil-stained concrete, which is the most common cause of epoxy peeling."
    },
    {
      "q": "Is a DIY kit as durable as a pro install?",
      "a": "Big-box one-part kits are much thinner than professional 100% solids systems. A high-solids two-part epoxy with a polyaspartic topcoat gets you close to pro durability at roughly half the installed price, if the prep is done right."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/24x24-garage-calculator",
    "https://www.revenuelab.fyi/toolbox/10x10-paver-patio-calculator"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — 600 sq ft Garage Floor Epoxy Calculator (https://www.revenuelab.fyi/toolbox/600-sq-ft-garage-floor-epoxy-calculator)"
}