Sorbo squeegees larger than 36 inches are difficult to turn when cleaning high-rise windows. Find out how to use Sorbo squeegees in this free video on washing windows of commercial buildings from a professional window washer. Expert: Jason Ihrig Bio: Jason Ihrig with Hi-tech Window Cleaning has been cleaning windows for more than 20 years. He specializes in all phases of window cleaning and has taught many employees the art of cleaning a window. Filmmaker: joseph wilkins