BS EN 12326-1:2004 specifies requirements for slate and stone products for roofing and external cladding, used for assembly into discontinuous roofing and external cladding. The evaluation of the performance of the products has been defined, as far as possible, in terms of a number of type tests.
A distinction has been made between product appraisal (type test) and routine factory production control requirements. The performance of a roof or wall constructed with these products depends not only on the properties of the product as required by this document, but also on the design, construction and performance of the roof or wall as a whole in relation to the environment and conditions of use.
EN 12326-1:2004. It supersedes BS 680-2:1971 which is withdrawn.
Contents include:
- symbols and abbreviations
- origin and petrography
- thickness
- bending strength
- grain
- water absorption
- freeze–thaw resistance (only for code A2 from Table 2)
- thermal cycle test
- carbonate content
- sulphur dioxide exposure test
- non-carbonate carbon content
- defects dimensions
- release of dangerous substances
- number of slates required for type tests and factory production control
- evaluation of conformity
- general
- testing frequency
- type tests
- factory production control
- procedures in case of nonconformity and/or complaint
- marking, labelling and packaging
