Downspouts on houses are vertical pipes that direct rainwater from gutters to the ground. They play a crucial role in preventing water damage to the house’s foundation and landscaping. Downspouts come in various materials such as aluminum, vinyl, and copper. When selecting downspouts, factors like durability, aesthetic appeal, and compatibility with the gutter system should be considered. Proper installation and maintenance of downspouts ensure effective water drainage and prevent clogging.