1. Traditional roof tiles

1.1 Certification

Tile certification is a voluntary act that attests, by means of a qualification certificate issued by an independent third-party organization, that a tile complies with precisely defined characteristics.

1.2 NF standard

In France, manufacturers produce clay or concrete roof tiles of a higher quality than that required to meet current standards. Most of them have therefore legitimately decided to join the certification scheme set up by the NF mark, in order to enhance the...