Sound Control of movable walls.
Sound Control of movable walls.
Sound control or sound insulation of movable walls usually refers to sound control of air bone sounds in laboratory circumstances. The dB values are according to the method ISO 140-1978 and to the standard ISO 717.
The manufacturer can be held responsible only for its products and work validity of its instructions for sound insulation work of tracks and brackets. Sound control between that spaces divided cannot be guaranteed but the manufacturer if he has not influenced the quality and parts of the construction surrounding the movable wall.
Buildings always have flanking paths that contribute to sound leaks. Flanking paths vary case by case – decrease in sound control can be about 5 dB to even 20 dB.
Good sound control can be achieved only by careful planning of the whole beforehand. E.g. different kinds of ducts and pass doors from space to another will cause problems.
Checklist:
Permanent wall around movable wall
- Are end walls of the kind not to transmit sound well or can they be cut. Uncut board wall may cause big sound control problems.
- Are there in permanent walls e.g. cable ladders from space to another so that sounds are transmitted well?
- Are there supplies and return air ducts in permanent walls?
- Are there central-heating pipes from space to another?
Space above suspended ceiling
- Insulation has to be made case by case according to instructions
- Check that there are no air or other ducts from space to another
Floor
- check floor construction and material
- if the floor is parquet it should be cut under the movable wall. Otherwise foot step and other sounds are transmitted from space to another.
- Make sure that there are no air heating ducts from space to another
You have to be absolutely sure that you or your customer understands what the sound ratings stated and required mean.
If you have any additional questions about sound control of movable walls, please contact Movable Wall team using our contact form.
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