Abstract: A snow and ice diverting apparatus for protecting a roof stack, the snow and ice apparatus having a base angle for securing the apparatus to a roof, a fin for cutting through sliding snow and ice and for diverting snow and ice from the roof stack, and an adjustment device for securing the fin to the roof stack. The fin is attached between the base angle and the adjustment device. The adjustment device is operable to allow infinite adjustability over a predetermined range of roof stack sizes. In addition, the adjustment device has a cable, which has an eye end and a free end, and a retainer device for securing the eye end and the free end of the cable. The cable is in communication with the roof stack and the retainer device. The retainer device is attached to said fin.