Large aggregates are pushed below the surface and major surface irregularities are removed. Finishing After bullfloating, allow concrete to stiffen and the water sheen to disappear from the surface. This is usually in about 15 minutes to an hour. A simple test is to step on the concrete. At this point, finish floating can begin, and joints and edges can be tooled.
Finish floating uses a wooden or metal float to remove slight imperfections.
Floating is frequently used as a final finish. It provides a good slip resistant texture. Floating also prepares the surface for subsequent finishing operations. Troweling follows floating when a smooth, dense surface is desired. Timing is important in this operation.