Hi---we have a crack in the foundation under a basment window--the crack goes all the way to the ground. Our carpeting in the basement area below the window which is about 4 foot above the floor is very wet. To have this repaired we are told we need to cut away the drywall for access for the man to repair the leak in the foundation. Could you please tell me what tools to use and best way to cut away the wallboard. Also how to replace the wallboard. thanks you Pat