NBN EN 771-5:2004

This EN specifies the characteristics and performance requirements of Manufactured Stone Masonry Units for which the main intended uses are facing or exposed masonry in loadbearing or non-loadbearing building and civil engineering applications. The units are suitable for all forms of coursed or random masonry walling, including single leaf, cavity, partition, retaining and the external masonry to chimneys and they can provide fire protection, thermal insulation, sound insulation and sound absorption.