Why Full Broadcast Flake

The difference between flake in a floor and flake scattered on one.

Two floors can both be described as flake floors and be nothing like each other. The difference is how much flake went down, and it changes the price, the appearance and the way the floor wears.

What broadcasting means

Flake is not mixed into the epoxy. It is thrown into the base coat while the base coat is still wet, so each flake lands on its edge or its face and is held where it falls. The base coat cures around it. Once cured, the loose flake is swept off, the surface is scraped flat, and the clear topcoat goes over the top.

Full broadcast means you keep throwing until the floor refuses to take any more — the point where new flake lands on flake instead of on epoxy. Partial broadcast means you stop early, on purpose, and the base coat color shows between the chips. Most hardware-store kits are partial by design: the flake is an accent scattered over a colored film.

Why full broadcast costs more

Materially more flake. Broadcasting to refusal uses several times what a scattered accent uses, and a large part of it is swept up afterwards and thrown away. That waste is not a mistake in the method — it is how you know the floor is saturated.
An extra day of work. A partial broadcast can go straight to clear. A full broadcast has to cure, be swept, be scraped flat and be patched before the clear can go down.
More clear coat. A saturated flake surface has more surface area and more profile than a smooth one, so it takes more topcoat to fill and level.

What that buys

The color is a layer, not a coat of paint. On a full broadcast floor, what you see is flake. The base coat is completely hidden, which is why a full broadcast floor does not read as painted concrete.
Wear exposes more flake, not bare epoxy. On a partial floor, the areas that wear are the base coat between the chips, so wear shows up as a change in color. On a saturated floor there is flake everywhere the wear can reach.
It hides the slab. Trowel marks, patches, color variation and old repairs disappear under a saturated broadcast in a way they do not under a thin decorative scatter.
Texture. The flake edges standing proud in the base coat are what give the finished floor its texture. What that does and does not do for slip.

The trade-offs

A full broadcast is harder to install than a partial one. There is more material to move in a shorter time, the sweep and scrape step is real work, and the broadcast itself has to be even — a thin patch shows as a shadow once the clear goes on and cannot be fixed afterwards without re-coating that area.

The finished surface is also textured rather than smooth. That is what most people want in a garage, but a textured floor holds dust in a way a polished one does not, and it wants a stiff brush rather than a dry mop.

This page is ANVIL positioning, not a manufacturer specification

The manufacturer’s data sheet specifies a 20/40 mesh silica sand broadcast to refusal, for an industrial non-slip finish. Broadcasting decorative vinyl flake by the same method into the same wet base coat is an ANVIL product decision. Nothing on this page is attributed to the manufacturer. The flake is ANVIL’s own specification — Quarter inch, broadcast at 0.2 lb per sq ft, broadcast to refusal — and one thing about it is still open: flake UV stability not yet documented. The coverage figure a partial-broadcast kit actually achieves is a comparison we have not yet sourced: partial-broadcast coverage figure not yet sourced.