Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by form]
6. [materials by physical form]
7. tile (material)
8. [tile by function]
9. roofing tile
10. [roofing tile by function]

Anotations

Scope note:

Special type of roofing tile made with perforations to permit the passage of air and sometimes light. Ventilating tiles are typically set into a span of regular roof tiles; they usually have a raised, curving profile in which the ventilation holes are situated.