If you take even a passing interest in architecture, then you may find yourself looking at certain architectural features and wondering what their purpose is. While some elements are merely for decoration, many building features are designed to solve a specific practical issue. This is true for bellcast roofs, for instance. A bellcast roof is one that features a gently curved angle towards the bottom edge, named for how its shape resembles that of a bell. The bellcast roof is common in colder areas that get a lot of snow every year since it ensures that the snow either melts into the gutter or lands far enough away from the house to prevent damage.