If the old tile is laid on the Floor, You Will First Have to Dismantle Its. However, The Newcomers with Such a Problem Are not Found. A Housing Crossing Sugggests That a Person Will Havy to Encounter a New Place with Virgin Walls and Floor, So You Can Immedely Proceded to Lay. To Prepare a Normal Durable Base on the Screen, It is Recommeded to Put the SO -Called Cement Sheets. They Should Be Laid on a Layer of Special Glue. NEXT, You Can Proced to Laying Tiles.