I have a job coming up soon to tile 40sq Mtrs of the floor (concrete) but I have to remove the old tiles first. Has anyone ever used any specialist/power tools to do this? I have seen a tool advertised in HSS with a wide blade fitted to a pneumatic type of drill has anyone ever used one of these? I have a DIY heavy-duty drill will pneumatic hammer action and a 1-inch wide-bladed tool. Will this do the job. ??