What Mil Thickness Means
One mil equals 1/1000 of an inch. Coating thickness measures the built-up film after all layers cure — not the wet resin poured out per gallon.
Typical Residential Garage Builds
- Basic 1-coat solid color: 6-10 mils
- Flake epoxy with clear topcoat: 15-25 mils
- Polyaspartic full system: 20-40 mils
- Full quartz broadcast: 30-60 mils
When Thicker Actually Helps
Commercial and industrial floors with forklift traffic, chemical exposure, or heavy impact benefit from higher builds. A homeowner garage rarely needs 40+ mils.
What Matters More Than Thickness
Prep quality, primer selection, and topcoat chemistry drive real-world longevity more than the raw mil number. A 15-mil professionally installed flake system outlasts a 40-mil poorly-prepped install every time.