STILL TRYING TO FIND A PRODUCT THAT I SAW BOB VILA USE SOME YEARS AGO. IT WAS EITHER ACRYLIC OR EPOXY MATERIAL IN A FIVE GALLON CONTAINER WHICH HE SIMPLY POURED OUT ONTO A CONCRETE SURFACE FILLING IN ALL LOW SPOTS THUS ELIMINATING POOLING OR PONDING OF WATER. I DONT REMEMBER MANY DETAILS BUT THE PRODUCT WAS LEFT TO DRY AND YOU WERE DONE!THANKS. BM.