Performance standards for separating structures

It is the view of the Department that the requirements of Part G will be met if separating walls, separating floors, and stairs that have a separating function, together with the associated flanking construction, are built in such a way that they achieve the sound insulation values for dwellings set out in Table 1a, and the values for rooms for residential purposes set out in Table 1b. For walls that separate rooms for residential purposes from adjoining dwellings, the performance standards given in Table 1a should be achieved.