规定了柔性建筑膜（也称为纱布或垫层）的安装要求，当单独使用或作为其他材料（如隔热材料）的饰面，用于水控制、热控制、蒸汽控制或空气控制，或这些控制功能的组合时。

Sets out requirements for the installation of pliable building membranes (also known as ‘sarking’ or ‘underlay’), when used either independently or as a facing to other materials, such as insulation materials, for water control, thermal control, vapour control or air control, or a combination of these control functions.