What term is used for asphalt shingles that are made up of several layers?

The term used for asphalt shingles that are made up of several layers is "architectural." Architectural shingles, also known as dimensional shingles, are designed with multiple layers to create a more textured and dimensional appearance, enhancing both aesthetics and durability. The layered composition generally offers increased resistance to wind and other environmental factors compared to simpler types of shingles.

Architectural shingles are often preferred for residential roofing because they provide a more attractive look that can mimic the appearance of traditional roofing materials, such as wood shakes or slate, while still being made from asphalt. This design not only contributes to the visual appeal but also typically leads to better performance in terms of lifespan and structural integrity.

In contrast, terms such as "standard," "flat," and "single-layer" denote different characteristics or types of asphalt roofing. Standard refers to basic styles, flat typically describes roof styles rather than shingle types, and single-layer refers to shingles that consist of a single layer, lacking the dimensional qualities that characterize architectural shingles.