Points to Watch – Wall Type 4 Construction Requirements

Points to watch – Do (a) Do ensure that where cavity stops are needed in the cavity between frames they are either flexible or fixed to only one frame. (b) Do stagger the position of electrical sockets and switches on opposite sides of the separating wall, and use a similar thickness of cladding behind the socket box. (c) Do ensure that each layer of plasterboard is independently fixed to the stud frame. (d) Do control flanking transmission from walls and floors connected to the separating wall as described in the guidance on junctions. (e) Where it is necessary to connect the two leaves together for structural reasons, do use resilient connectors where possible. Do not (f) Where it is necessary to connect the two leaves together for structural reasons, do not use ties of greater cross section than 40 mm x 3 mm fixed to the studwork at or just below ceiling level and do not set them at closer than 1.2 m centres. (g) Do not locate electrical sockets or switches back to back. A minimum edge to edge stagger of 150 mm is recommended. Do not chase plasterboard.