*Note to Nathan... I don't usually say anything about our particular products because of the terms of service. Also, we're not really looking for more business since we are sold out for weeks at the moment. However, we are one of the few companies that can help in animal containment areas, this is a really small sale, and... we have this in stock (at least we did when I left today).
BondTite 1101 with EnduraTred particles would fit this bill... You can't use just any rubber because polymers don't really like to stick to it. EnduraTred particles are rubber that has been treated under high pressure with Cl- gas and some other super-secret gases that oxidize the surface of the rubber and add reactive sites to the surface. What that means for you is that the rubber actually reacts into the clear BondTite 1101. Rubber that is not surface treated will eventually work it's way out of a polymer. We also offer a pure polyurea coating designed for the floors of animal containment to cushion hoofs. The coating will take an elephant tusk at full point load and rebound. (I don't think you need this kind of performance or want to pay for it.) This coating must be pigmented. We have an Animal Containment expert who works with us if you feel like you need help there. However, you kind of hit the nail on the head with what you recommended. The BondTite 1101 is an extremely durable 100% solids material (with no fumes) that can be applied in the presence of animals. BondTite 1101 is being applied tomorrow at the Maryland Zoo in Baltimore in the Chimp area. Because of the suseptability of chimps to chemicals the air must be monitored. So, you can have some confidence that no animals will be harmed in the making of this movie. :thumbup:
Last, you can't use anything like broken glass, aluminum oxide, or other coarse aggregates because they can irritate the hoofs (if not shoed) and feet (if shoed) of the horses. I don't exactly know why... I just know it does.
Feel free to PM me for more... (Aren't these forums amazing?)
