NEN EN 12326-1 : 2014

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Requirements
  5.1 Origin and petrography
  5.2 Thickness
  5.3 Bending strength
  5.4 Grain
  5.5 Water absorption
  5.6 Freeze-thaw resistance (only for code A2 from Table 2)
  5.7 Thermal cycle test
  5.8 Carbonate content
  5.9 Sulfur dioxide exposure test
  5.10 Non-carbonate carbon content
  5.11 Defects
  5.12 Dimensions
  5.13 Fire
  5.14 Release of dangerous substances
  5.15 Number of slates required for type tests and factory
       production control
6 Evaluation of conformity
  6.1 General
  6.2 Testing frequency
  6.3 Type tests
  6.4 Factory production control
  6.5 Procedures in case of nonconformity and/or complaint
7 Marking, labelling and packaging
Annex A (informative) Appearance of slates
Annex B (informative) Calculation of the basic individual
        thickness of slates
Annex C (informative) General guidance on the installation of slates
Annex D (informative) Accompanying commercial document
Annex ZA (informative) Clauses of this European Standard addressing
         the provisions of the EU Construction Products Directive
Bibliography

Defines requirements for slate and carbonate slate for discontinuous roofing and external cladding, used for assembly into discontinuous roofing and external cladding.