A roof is the top covering of a building, designed to protect it from weather elements like rain, snow, and sunlight. It helps to insulate the interior, keeping it warm in winter and cool in summer. Roofs can be made from various materials, including asphalt shingles, metal, tiles, and wood, each offering different benefits and aesthetics. Roofs come in various styles, such as flat, gabled, and hipped, which can affect the overall look of a structure. Proper roof installation and maintenance are essential for ensuring longevity and preventing issues like leaks or structural damage.