Rafters are structural components used in building roofs. They are typically made of wood or metal and are designed to support the roof's weight while providing a framework for insulation and roofing materials. Rafters are usually arranged in a sloping manner to allow for water drainage and to create an attic space. In residential construction, rafters are often part of a larger system that includes trusses and beams. They are essential for maintaining the integrity of the roof and ensuring that it can withstand various weather conditions, such as rain and snow. Proper installation of rafters is crucial for the overall stability of a building.