Technical Booklet G Resistance to the Passage of Sound·Page 28·Table 2.1
Separating wall junctions reference table
Table 2.1 indicates the availability of guidance (G = guidance available, S = seek specialist advice, X = do not use) for different building elements attached to four types of separating walls, and references Section 3 for separating floors and associated flanking constructions.
Separating wall type: Building element attached to separating wall Type 1 Type 2 Type 3 Type 4. External cavity wall with masonry inner leaf: G G S G. External cavity wall with timber frame inner leaf: G G S G. External solid masonry wall: G S G G. Internal wall – framed: G G S G. Internal wall – masonry: G G S G. Internal floor – timber: G G G G. Internal floor – concrete: G G G G. Ground floor – timber: G G S G. Ground floor – concrete: G G S G. Ceiling and roof space: G G G G. For flats and maisonettes the following may also apply: Separating floor type 1 – concrete base with ceiling and soft floor covering; Separating floor type 2 – concrete base with ceiling and floating floor; Separating floor type 3 – timber frame base with ceiling and platform floor. See Guidance in Section 3: Separating floors and associated flanking constructions for new buildings. Note: Where any building element functions as a separating element (e.g. a ground floor that is also a separating floor for a basement flat) then the separating element requirements should take precedence.
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