Hi guys im planning to do a full renovation for my 3-room hdb (40 yrs old) The flooring based is hdb stock cement through out the living/bedrooms/kitchen. Even kitchen wall has no tiles. The only places that has tiles are a small area of the balcony floor , common toilet floor and master room toilet floor n wall. ( done by hdb abt 6-7 years ago during upgrading in my area) Have been using those flooring thin sheets to lay all this years. Im wondering am i suitable to use overlay method to do my flooring? Since there isnt any tiles at most places and i can spend on other place like replacing all the doors , gate n windows and also aircon. I supposed cement n sand would be used right? Would it be able to smooth out my old not so perfect cement floor?