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Technical Booklet G Resistance to the Passage of Sound·Page 48·2.87

Continuity of separating wall to roof

Type 2 separating walls must be continuous to the underside of the roof.

non-domesticdwellingsound
Where a type 2 separating wall is used it should be continuous to the underside of the roof.

Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet G - Resistance to the Passage of Sound.pdf