Carports are typically made from wood, aluminum, or steel. The most common type of wood used for carports is treated lumber, such as pine or fir. Treated lumber is resistant to rot and insect damage, making it a good choice for an outdoor structure like a carport. You can also find carports made from cedar or redwood, though these woods are more expensive than treated lumber. Aluminum and steel carports are also available, but they are less common than wooden carports.