NF P32-301
Roofing. Slate. General characteristics of slate.
Le présent document est la deuxième partie d'un ensemble relatif aux ardoises naturelles et autres pierres utilisées pour la toiture et les revêtements muraux des bâtiments. Il prescrit des méthodes d'essai.
Le présent document spécifie les exigences relatives aux ardoises naturelles utilisées pour la couverture et le bardage des bâtiments. Il définit les prescriptions concernant toutes les caractéristiques des ardoises (sauf l'aspect), l'évaluation de la conformité, le marquage et l'étiquetage.
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