when they pour the concrete floor just have them put a sealer on then-LET IT DRY BEFORE YOU WALK ON IT!!!
AFTER THE BLOCKS HAVE SET AND DRIED FOR A COUPLE OF WEEKS [THEY SHOULD LOOK AND FEEL COMPLETELY DRY] THEN YOU CAN JUST PAINT THEN TO KEEP STUFF FROM SOAKING IN
BE SURE AND FILL THE CONCRETE BLOCKS WITH GROUTING OR MORTAR ALSO-IT MAKES A MUCH MORE SOLID WALL AND KEEPS THE TEMPS BETTER IN THE BUILDING[WINTER AND SUMMER]
NOT BEING PUSHY --THIS IS WHAT I HAVE BEEN DOING FOR A LIVING FOR THE LAST 35 YEARS 8)
IF YOU HAVE MONEY TO BURN YOU CAN ALWAYS PUT ONE OF THE TILE FLOORS IN IT YOU SEE IN THE MAGAZINES
ANY OTHER ??? JUST ASK
LIVELY