
Specification for waterproof building papers.
NORMA vydaná dňa 19.5.1972
Označenie normy: BS 1521:1972
Dátum vydania normy: 19.5.1972
Počet strán: 10
Približná hmotnosť: 30 g (0.07 libier)
Krajina: Britská technická norma
Kategória: Technické normy BS
Quality, workmanship, dimensions, performance. Class A for prevention of draughts or ingress of water into wall or pitched roof structures, Class B for temporary purposes such as protection of concrete during curing. Status: Confirmed