6. Geographic zones of coverage exposure

Wind and rain concomitance zones and situations

• Zones

  The DTUs for clay tile roofing define roof slopes and tile coverings by reference to "zones" and "situations" of exposure of the roof to the phenomenon of wind-rain concomitance. It is in fact the combination of precipitation and wind that is the cause of possible watertightness failures between roofing elements.

  France is divided into 3 application zones (in view of the wind-rain concomitance phenomenon). These zones are specified in table 8 and illustrated on figure 11 .