Typical epoxy coating thickness ranges
Actual coverage rate is set by the specific epoxy product and published on its manufacturer technical data sheet; the ranges below are common industry patterns, not a single fixed standard.
| Coating type | Typical thickness per coat | Notes |
|---|---|---|
| Standard 2-coat epoxy floor coating | ≈0.125–0.25 mm per coat | Common for garage and light-duty residential floors |
| Self-leveling / high-build epoxy | ≈0.5–3 mm total | Applied as a poured system, not roller-coated; check product TDS |
| Flake / broadcast system basecoat | ≈0.3–0.5 mm per coat | Broadcast media adds additional material beyond the basecoat |
- This calculator assumes a 100%-solids epoxy, where wet-film and dry-film thickness are approximately equal; solvent-based or water-based coatings lose volume as the carrier evaporates and require a different coverage calculation.
- Always confirm coverage rate against the specific product's manufacturer technical data sheet (TDS), which is the authoritative source for that product.
What is epoxy floor coverage based on?
Unlike solvent- or water-based paint, a 100%-solids epoxy coating has almost no carrier that evaporates after application, so its wet-film thickness is approximately equal to its final dry-film thickness. This means the volume of epoxy needed is a direct function of area multiplied by thickness — one square meter covered to one millimeter of depth equals one liter of material, before allowance for loss.
Standard epoxy floor coating systems commonly apply at roughly 0.125–0.25 mm per coat for typical residential and light-duty commercial floors, while self-leveling or high-build systems and flake/broadcast basecoats are applied at different thicknesses. The specific product's manufacturer technical data sheet (TDS) is always the authoritative source for the recommended coverage rate of that product.
The 10% allowance built into this calculator's result accounts for mixing loss, spillage, and surface porosity or texture variance. Porous or previously uncoated concrete typically absorbs more epoxy on the first coat than a smooth or previously sealed surface, which can shift real-world consumption further from this estimate.
How to use this epoxy flooring calculator
- Enter the floor area to be coated.
- Enter the coating thickness per coat — check the specific product's technical data sheet for the recommended figure.
- Enter the number of coats planned.
- Read the total liters needed (with a 10% allowance), the number of 3-liter kits required, and the coverage per liter per coat.
The formula behind epoxy coverage
Because a 100%-solids epoxy's wet-film thickness approximately equals its dry-film thickness, one square meter covered to one millimeter of depth equals one liter of material. The calculator multiplies area by thickness and by the number of coats to get a base volume, then adds a 10% allowance for mixing loss and application variance.
Common mistakes
- Using a generic thickness estimate instead of checking the specific product's technical data sheet, which is the authoritative source for coverage per liter.
- Forgetting that porous, rough, or previously uncoated concrete absorbs more epoxy on the first coat than a smooth or previously sealed surface.
- Not accounting for broadcast media (flakes, quartz) volume separately when estimating a flake-system floor, since the basecoat calculation alone understates total material needed.
- Ordering the exact calculated volume with no allowance for mixing loss, spillage, or an uneven substrate, all of which increase real-world consumption.
Часто задаваемые вопросы
How much epoxy do I need per square meter?
It depends on the coating thickness and the specific product, but as a general rule, 100%-solids epoxy applied at 1 mm thickness uses roughly 1 liter per square meter, before allowance for mixing loss. Always check the manufacturer's technical data sheet for the specific product's recommended coverage.
Does the thickness input mean wet film or dry film?
For 100%-solids epoxy, wet-film and dry-film thickness are approximately equal, since there is very little carrier to evaporate. This is different from solvent- or water-based coatings, where the dry film ends up thinner than the wet film applied.
Why does this calculator add a 10% allowance?
The 10% allowance accounts for mixing loss, spillage, and surface porosity or texture variance, since real-world consumption is typically somewhat higher than the theoretical area-times-thickness calculation.
Does this calculator work for self-leveling epoxy?
It can, if you know the target thickness for the self-leveling system, since the same area-times-thickness math applies. Self-leveling and high-build systems are often applied at greater thickness than standard coatings, so check the product's technical data sheet for the recommended depth.
What's the difference between wet-film and dry-film thickness?
Wet-film thickness is the depth of coating as applied, before it cures. Dry-film thickness is the final cured depth. For 100%-solids epoxy the two are approximately equal; for solvent- or water-based coatings, the dry film is thinner because the carrier evaporates during curing.
Источники
- ASTM International. ASTM D1005, Standard Test Method for Measuring Dry-Film Thickness of Organic Coatings. astm.org.
- Manufacturer epoxy coating technical data sheets (industry-standard coverage-rate and mixing-allowance conventions).
- American Coatings Association. General coating-thickness terminology (wet-film vs. dry-film thickness). paint.org.