Right now in our area there are huge problems with ice forming on the eaves of buildings. These ice monstrosities are formed when the roof warms up from the sun or from heat loss inside the living space. Then water runs down and cools at the overhangs, or eaves. The water freezes and forms an ice dam. This backs up water that may be running down the roof, thus providing potential water leakage and damage to the interior of the building. It can be very dangerous to remove these hanging ice sickles or even walk underneath them. They can be extremely heavy and falling from the height of a building can injure or even kill people below.