From Mediterranean vernacular architecture to high-tech contemporary roofs, the clay roof tile combines the aesthetics of terracotta with aerodynamic functionality designed to deflect water and resist wind.
Tiles are produced by extrusion (classic coppi) or by moulding in steel presses (Portuguese or Marseille tiles). The mechanical interlocking geometry prevents wind-driven rain from rising by capillarity and penetrating the attic.
Regulations require dry laying on double battens. The resulting air gap heats and rises through the ventilated ridge (chimney effect), keeping the clay dry and removing up to 40% of summer heat from the attic.
Standards
European and international references applicable.
Physical properties
Usage environment
The minimum slope required varies by tile geometry: 15% for interlocking Portuguese tiles, up to 35% for classic coppo and embrice. Always verify local building codes and wind uplift requirements before specifying.