Technical Booklet G Resistance to the Passage of Sound·Page 31·2.32(a-g)

Solid Masonry Wall Type 1 - Construction Requirements (Do's)

Key construction practices to achieve required sound insulation performance in solid masonry separating walls, including mortar filling, brick laying, cavity stops, flanking control, socket positioning, and flue block treatment.

Do (a) Do fill and seal all masonry joints with mortar. (b) Do lay bricks frog up to achieve the required mass per unit area and avoid air paths. (c) Do use bricks/blocks that extend to the full thickness of the wall. (d) Do ensure that an external cavity wall is stopped with a cavity stop at the junction with a separating wall, unless the cavity is fully filled with mineral wool or expanded polystyrene beads (seek manufacturer's advice for other suitable materials). (e) Do control flanking transmission from walls and floors connected to the separating wall as described in the guidance on junctions. (f) Do stagger the position of electrical sockets and switches on opposite sides of the separating wall. (g) Do ensure that flue blocks will not adversely affect the sound insulation and that a suitable finish is used over the flue blocks (see BS EN 1858 and seek manufacturer's advice).

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