NEN EN 12326-2 : 2011

1 Scope
2 Normative references
3 Definitions and symbols
4 Surveillance sampling procedure
5 Determination of the length and width and the
   deviation from the specified length and width
6 Determination of the amount by which the edges
   deviate from a straight edge
7 Determination of the rectangularity of slates
8 Determination of thickness
9 Determination of the deviation from flatness
10 Determination of failure load in bending
11 Water absorption test
12 Freeze-thaw test
13 Determination of non-carbonate carbon content
14 Determination of carbonate content
15 Sulfur dioxide exposure tests
16 Thermal cycle test
17 Petrographic examination
Annex A (informative) Petrographic interpretation
Bibliography

Defines test methods for slate and carbonate slate for roofing and wall cladding. Applies to natural roofing products as defined in EN 12326-1:2004 used for assembly into discontinuous roofs and external wall cladding.