My bathroom basin is held on with several inches of silicon (not screws) both at the floor end and against the wall. its the wall bit that i'm trying to figure out. i need to replace the floor. so i need to remove and replace the basin. how to get it off the wall? is there some 1 inch saw half a metre long or something i can use to go throught the silicon that has effectively glued the basin to the wall. do i have to break the tiles? i can replace them anyone else been in this situation?