It is considered by many horse owners to be the best, and most expensive, aisle floor money can buy. Rubber tile is also available in a variety of colors. Rubber tile has many of the advantages of rubber brick, but since it is thinner and on a solid base, it doesn't provide quite as much cushion. Concrete makes the most durable and hardest floor and is maintenance free. It is the floor most likely to cause injury should a horse or person fall on it.
Smooth concrete is easy to sweep but is very slippery for shod horses and when the floor is wet.
Texturing concrete with a stiff broom before it sets results in a floor with better traction but makes it somewhat harder to sweep. Asphalt is cheaper than concrete, but not nearly as durable. Rubber mats over concrete are one of the best combinations for a barn aisle floor. You get the cushion and ease of cleaning of a rubber surface with the stability of a concrete base. Interlocking mats have puzzle-piece edges that prevent mat joints from separating.