THIS BRANCH IS NOW CLOSED. Do you have broken home or business glass? For fast and hassle-free home and building glass repair and glass replacement choose O'Brien® Glass Muswellbrook. Those in the Muswellbrook, areas and surrounds can take advantage of our convenient mobile service. At O’Brien®, we’ve been providing quality glass products and services to Australian homes and businesses for over 90 years. From emergency glass repairs and new glass installation, to tinting, pet doors, shower screens splashbacks and pool fencing, you can rely on us to supply and expertly fit your glass.