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Calcimator

Flood Coat Calculator

Calculate the amount of resin needed for flood coats on countertops, tabletops, or artwork based on surface area, thickness, and number of coats.

Inputs

sq ft
mils
sq ft/oz at 1 mil

Results

Total Resin (with 15% overage)

207 oz

≈ 3 bags of sugar

Total Resin1.62 gal
Exact Resin Needed180 oz
Resin per Coat90 oz
Total Buildup24 mils
Total Buildup0.02 in
Recoat Window4-6 hours (or until tacky/fingerprint-free)
How to Use This Calculator
  1. Enter the total surface area you need to coat in square feet.
  2. Set the target thickness per coat in mils (typical flood coats are 4–8 mils; 1 mil = 0.001 inch).
  3. Enter the number of coats you plan to apply.
  4. Enter the spread rate of your epoxy in sq ft per oz at 1 mil from the product data sheet.
  5. Read the total resin needed in ounces with 15% overage for drips and edge coverage.
  6. Use the gallons output to compare costs when purchasing resin in larger containers.

How the result changes with Spread Rate

Spread RateTotal Resin (with 15% overage)
0.95348.63 oz
2.08159.23 oz
3.4396.55 oz
4.5572.79 oz

What each input means

Surface Area
Total surface area to be coated in square feet. For rectangular surfaces: length (ft) x width (ft).
Target Thickness per Coat
Thickness per coat in mils (1 mil = 0.001 inches). Seal coat: 3-5 mils. Standard flood coat: 10-15 mils. Heavy flood: 30-60 mils (1/16").
Number of Coats
Typically 1 seal coat + 1-2 flood coats. More coats build up thickness and improve durability.
Spread Rate
Coverage rate of your resin at 1 mil thickness. Typical epoxy covers 1.4-1.8 sq ft per oz at 1 mil. Check your product data sheet.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Surface Area = 12, Target Thickness per Coat = 12, Number of Coats = 2, Spread Rate = 1.6 = 4 input(s) provided
  2. Calculate Total Resin
    Total Resin
    207 = 207
  3. Calculate Total Resin
    Total Resin
    1.617 = 1.617
  4. Calculate Exact Resin Needed
    Exact Resin Needed
    180 = 180

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