The answer depends on 5 criteria:
1 - the type of tile (flat tiles, interlocking tiles, flat-looking interlocking tiles or canal tiles)
2 - the zone, France being divided into 3 zones according to wind and weather exposure
3 - the site, which describes the precise local situation (protected, normal or exposed site)
4 - the length and dimensions of the roof (for some products)
5 - the presence or absence of a roof underlay. To find out more about the geographical areas, you can consult the regulations in the installation guides in our product sheets.
You can also ask your question to our Tile technical assistance office (see Contact us).