How much epoxy resin per square meter
The per-square-meter calculation is for flat coatings: countertops, paintings, floors and seamless finishes. Here is the quick table by thickness, how to calculate it, and why the porosity of the surface changes how much you need.
How to calculate resin per square meter
The formula is simple: width x length x thickness in millimeters, divided by 1,000, gives the liters of mix; multiplying by the density (~1.1) gives the weight. In practice the rule of 1.1-1.2 kg per m² for every millimeter of thickness is used, with density already included.
Floors and seamless coatings
Floors and seamless epoxy coatings are usually applied at 2-3 mm thickness, so count 2.2-3.3 kg/m². For a level, durable finish, they are applied in a double coat, which spreads the material better and hides imperfections.
Porosity changes the usage
A porous surface (unsealed wood, concrete, plaster) absorbs resin and drives up usage. The fix is to apply a thin seal coat first, let it cure and then apply the finish coat. That seal coat uses extra resin you should add to the calculation.
Resin per m² by thickness
- 1 mm (varnish)
- ≈ 1.2 kg/m²
- 1.5 mm (mirror)
- ≈ 1.6 kg/m²
- 2 mm (countertop)
- ≈ 2.2 kg/m²
- 3 mm (floor)
- ≈ 3.3 kg/m²
Note: Amounts of mix (resin + hardener) per m² before the waste margin.
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Calculate my surfaceFrequently asked questions
How much epoxy resin for 1 m²?
It depends on thickness: ~1.2 kg for 1 mm, ~1.6 kg for 1.5 mm (self-leveling mirror) and ~2.2 kg for 2 mm. Multiply by the square meters of your surface.
How much resin for a floor coating?
Floors are usually applied at 2-3 mm: count 2.2-3.3 kg/m². On porous surfaces, add a prior seal coat that uses extra resin.
Does the per-square-meter formula work for a river table?
No. The square meter works for flat coatings. For volumes like a river table, calculate the real volume (length x width x channel depth) and convert it with the density.