Sustainable Green Building NUDURA Insulated Concrete Form ICF. Timelapse Hilton Garden Inn. Eight man ICF crew approximately eight thousand square feet of wall per week. Building, Con-real, Concrete, Efficient., Energy, Form, FutureStone, Green, Gridline, Hilton, ICF, Insulated, LEED, Nudura, Shellcraft, Sustainable, Texas, Timelapse