The rake of a roof is the exposed portion on the sides of a gable roof that extends from the eave to the ridge of the sloped sides. It covers the top edge of the roof and is typically cut from a variety of roofing materials. The rake of a roof is also known as the rake board. It is an important part of a roof to understand because it can be vulnerable to specific problems that can become expensive inconveniences or even outright compromise the integrity of the roof. The rake board serves as a moisture barrier to your home and roofing system, and it is meant for aesthetic value. The rake of a roof can be vulnerable to leaks, especially in colder climates where ice dams are more common. There are three main types of roof rakes: overhanging exposed, overhanging and boxed in, and abbreviated or extended. A boxed-in rake roof at the gable end can mean an extra layer of protection against outside elements such as wind and rain.