HI
FIRST IS THERE A MOISTURE BARRIER UNDER THE CONCRETE IF NOT YOU MAY LOOK AT A BREATHABLE SYSTEM LIKE A WATER BASE EPOXY TWO COATS YOU CAN BROADCAST A NON-SLIP IN TO THE FIRST COAT THEN SEAL IN WITH THE SECEND COAT IF YOU ARE WORRIED ABOUT UV USE A URETHANE COATING BUT IF YOU DO THE SYSTEM...