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, allowing rain and snow to slide off easily. In traditional construction, rafters are often part of a larger system that includes trusses and beams. They connect to the ridge board at the top and the wall plates at the bottom, forming a triangular shape that enhances stability. Proper installation of rafters is crucial for the overall integrity of a building.