Guide
Epoxy Flake Coverage: How Much Flake Per Square Foot?
Decorative flake (the colored chips in a garage floor) is sold by the pound and applied by broadcast density. Get the density right and you control both the look and your material cost. Here is how many pounds per square foot each look takes.
- Flake is measured in pounds per square foot — from 0.05 (light accent) to 0.20 (full, to refusal).
- A 50-lb box covers anywhere from 250 to 1,000 sq ft depending on the density you broadcast.
- The 0.25–0.5 lb/sq ft numbers you see online are for silica sand, not flake — a common, costly mix-up.
Broadcast density: pounds per square foot
| Broadcast | lb / sq ft | Look | 50-lb box covers |
|---|---|---|---|
| Light (accent) | 0.05 | Sparse chips, concrete shows through | ~1,000 sq ft |
| Medium | 0.10 | Even coverage, some base visible | ~500 sq ft |
| Full | 0.15 | Dense, little base showing | ~333 sq ft |
| Full / to refusal | 0.20 | Solid chip bed, zero base visible | ~250 sq ft |
How to calculate flake for a job
- 1Measure the floor. Example: a 400 sq ft 2-car garage.
- 2Pick the look. Full broadcast = 0.15 lb/sq ft.
- 3Multiply. 400 × 0.15 = 60 lb of flake.
- 4Round up to boxes. 60 ÷ 50 = 1.2 → buy two 50-lb boxes (the extra covers waste and a heavier hand at refusal).
Full broadcast vs. partial — and the silica-sand trap
'Full broadcast to refusal' means you keep throwing flake until the wet base coat will not absorb any more — roughly 0.13 to 0.20 lb/sq ft for decorative chips. Partial broadcast (0.05–0.10) leaves base color showing for an accent look and uses far less material.
What flake costs
Decorative flake runs about $160 per 50-lb box (contractor pricing, varies by blend). At medium broadcast that is roughly $0.32/sq ft in flake alone; at full-to-refusal, closer to $0.64/sq ft. Density is a real lever on both the finished look and your margin — price it deliberately.
Let the calculator size your flake
CoatBid converts any garage size and broadcast density into exact flake pounds and boxes — alongside your coatings and price — in one takeoff.
Frequently asked
It depends on the look: light accent is about 0.05 lb/sq ft, medium about 0.10, full about 0.15, and full-to-refusal about 0.20 lb/sq ft. Multiply your floor area by the density to get total pounds.
Roughly 250 to 1,000 sq ft, depending on density — about 1,000 sq ft at light broadcast, 500 at medium, and 250 at full-to-refusal.
Those figures are for silica sand broadcast (a texture/slip additive), not decorative flake. Decorative flake tops out near 0.20 lb/sq ft at full refusal; quoting it at sand densities will roughly double your material order.