Gable, hip, shed, and flat roofs are popular porch roof styles. Gable roofs have a classic, pitched design that allows for efficient water runoff and can complement many house styles. Hip roofs offer a more sophisticated look with slopes on all sides, while shed roofs are simple, single-sloped options that can be ideal for modern homes, and flat roofs provide a contemporary appearance with potential space for a rooftop garden or seating area.