What material are composite shingles primarily made of?

Composite shingles are primarily made of fiberglass or asphalt-saturated materials, which gives them their durability, weather resistance, and versatility in application. The fiberglass core provides strength and stability, while the asphalt saturation contributes to waterproofing, making these shingles an ideal choice for a variety of climates. This composition allows composite shingles to mimic the appearance of traditional materials, like wood or slate, while offering better performance and longevity. The other materials listed, such as metal, foam, wood, tar, clay, and sand, do not typically define the structure of composite shingles, making fiberglass or asphalt-saturated materials the correct answer.