As a side note: We painted the concrete patio with the epoxy paint and sprinkles, and what a difference in heat retention. We live in So Cal where it can get HOT, and the patio gets sun most of the day. The sidewalk around the patio is unpainted and the concrete with the paint (light blue) is at least 10 degrees cooler. The room going out to the patio seems cooler too, once we painted it.