BS 9250:2007

Действует

Code of practice for design of the airtightness of ceilings in pitched roofs — 48 стр.

ICS

91.120.99 Other standards related to protection of and in buildings / Защита зданий снаружи и внутри, прочие аспекты

91.060.20 Roofs. Including related elements (gutters, etc.) / Крыши