My wife and I are getting a quote to redo our pool deck in concrete. One of the quotes we got was from an old timer. We told him we wanted it covered wtih CoolDek or SprayDek. He said all that was White Portland Cement with Dust added to it. He said he would cover it with White Portland Cement and Dust and it would be much cheaper. I've never heard of this before. He's done several jobs before for us that we have liked, at times he doesn't seem to be up with the times though.