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Partition and distribution partitions

Partitions contribute to the separation of rooms, but also to the sound insulation of a home.
Several solutions are possible to treat existing partitions, party walls, or to create a light acoustic partition.

Two types of partition exist: separative and distributive.

Separating partition

Separating partition

Designed to separate housing between them, in new or old buildings, it is subject to regulatory requirements acoustic (minimal sound insulation of 53 dB).
The realization of partition walls of apartments requires some precautions for the connection to the right of structural work and existing structures.
The achievement of acoustic performance will depend directly on the care given to the connection and must comply with the indications defined by the manufacturers.
Single wall partition
Composed of 13 mm plasterboard screwed on both sides of a vertical metal frame, it offers a good acoustic comfort and reduces airborne and indoor noise (TV, music, voice) that spread mainly through the wall separating two rooms. To increase the level of insulation, you can opt for thicker plates (18 or 25 mm) that provide better sound comfort.
Double-sided partition
It consists of 4 plasterboards of 13 mm, separated by an insulator and screwed on both sides of the metal frame. According to the law mass-spring-mass, it brings a greater acoustic performance than a simple partition, even thicker.
Choice of insulation
In general, special sheeted wool and expanded polystyrene PSE Ultra ThA or dB provide high acoustic insulation. Ecological, hemp wool panels also offer good acoustic performance.

Distributive partition

Distributive partition

It is intended to divide the space inside the same room or to reinforce the insulation between the living rooms.
There are no regulatory requirements, except when the bulkhead is in contact with an unheated room, such as a garage.
In this case, the partition must have the same thermal performance as a wall in contact with the outside, taking into account, however, the indoor temperature of the garage, higher than the outside temperature.

Alveolar core wall

It consists of one-piece panels, with plasterboard facing, interconnected by a cardboard honeycomb structure.
The panels fit at the top in a rail screwed to the ceiling and rest on a wooden sole. The connection between the panels is provided by keys.
In the case of a partition wall, it is necessary to implement two alveolar partitions lined with plasterboard 13 mm, separated by an insulator. Mostly mineral wool is used (semi-rigid roll or rigid board). The thickness of the insulation depends on the desired acoustic performance.
Good to know
At equivalent acoustic performance, a metal stud wall is 10 times lighter than a concrete wall and can be mounted in some cases directly to an existing floating screed.

(photos / visuals: BigMat, except special mention)

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