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Technical Booklet G Resistance to the Passage of Sound·Page 57·2.127

Masonry core continuity to roof

The masonry core of a separating wall must extend continuously up to the underside of the roof structure.

soundprotection-from-falling
The masonry core 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