The lower part of the roof that projects out is called the eaves. The eaves are not typically noticed on a home; however, its function is very important. The eaves keep rain and snow from running down directly onto the side of the house. Although eaves can be quite plain, they can be designed to have an architectural impact. As you approach an interesting house, look up, are the eaves
. impressive? For more information: http://www.dungannon.gov.uk/pubuploads/Non-Ventilated%20Eaves%20Detail.pdf