What are the roofs of most houses covered with?

Most houses are typically covered with roofing materials such as asphalt shingles, metal, tiles, or slate. Asphalt shingles are the most common due to their affordability and ease of installation. Other materials like metal and tiles offer durability and aesthetic appeal, while slate provides a long-lasting and elegant option. The choice of roofing material often depends on factors like climate, budget, and architectural style.