We just finished up a concrete overlay of an entire basketball half court for the Delta Tau Delta fraternity at the University of Arizona. After prepping the concrete, we started out by putting down a coat of white concrete where the lines would go and them and then taped out and covered the lines themselves. Then we installed the base purple and yellow colors with a concrete overlay skim coat. After that, we sprayed the purple texture coat on to make a non-slip surface. We installed a concrete-grade vinyl decal next, and then covered it up and sprayed the texture coat on the yellow portion. Then we removed the tape covering the decal and the white lines and sealed everything, adding a non-slip additive to the sealer that went over the vinyl decal.
This job was challenging, but a lot of fun! The fraternity members that we spoke to all loved the finished product and we have to admit, we were pretty excited ourselves about the way it turned out!