3. Professional rules and administrative procedures

Provisions specific to garden roof terraces, which are characterized by significant soil thickness and high loads, are set out in DTU 43.1 (reference NF P 84-204).

For lighter green roofing processes, i.e. extensive and semi-intensive green roofing, Professional Rules have been drawn up by the Association des toitures et façades végétales (ADIVET), the Chambre Syndicale Française de l'Étanchéité (CSFE), the Syndicat National du Profilage des Produits Plats en Acier (SNPPA) and the Union Nationale des Entrepreneurs du Paysage (UNEP).

These rules include numerous references to NF standards, DTUs, Avis Techniques, Documents Techniques d'Application, etc., and provide additional information and clarification. They aim to characterize the design and construction rules for vegetated roofs and terraces, for the benefit of project managers, owners,...