What type of roofing material is rolled roofing primarily made from?

Rolled roofing is primarily made from asphalt, which is a key component of its construction. This material is used for its water-resistant properties and durability, making it a popular choice for flat or low-slope roofs. Asphalt is effective at shedding water and maintaining integrity over time, which is crucial for roofing applications.

The process of making rolled roofing involves saturating a base material—often fiberglass or felt—with asphalt, followed by coating it with granules or a protective finish. This combination enhances its durability and contributes to its resistance against weathering and UV rays, ensuring a longer lifespan compared to some other roofing materials.

In contrast, the other options like metal, wood, and clay do not represent the composition of rolled roofing. Metal roofing is typically used for its strength and longevity but comes in panel or shingle form rather than in a rolled format. Wood, although historically used for roofing, does not have the same moisture resistance and is not typically available as a rolled product. Clay tiles are often shaped and interlocking, making them unsuitable for rolled roofing applications. Hence, asphalt stands out as the correct answer for the type of material primarily used in rolled roofing.