Specific Bracketing for acoustic insulation

Last updated on Wed, 07/13/2011 - 15:30

Specific Bracketing for acoustic insulation

The evacuation of waste, soil and rainwater generates structure-borne and airborne sound between rooms and usually occurs as the result of a mixed flow, when the pipe is filled with water and air. In such circumstances a pipe will radiate noise outwards and transfer it to any lightweight ceilings, cupboards and similar areas wherever it makes contact.

PAM Acoustic dampener 

All brackets within the SAINT-GOBAIN PAM range meet the requirements of the most demanding standards.  For exceptionally low levels of acoustic performance, the standard ductile iron or steel brackets fitted with a new acoustic dampener should be used. The different assemblies have been tested to EN14366: Laboratory measurements of noise from waste water installations.

The PAM acoustic dampener has been developed to meet the increasing demand for buildings which require a high level of acoustic performance over regulations requirements.

PAM pipe installation fitted with acoustic dampener*
Structure-borne noise: 2l/s = 5 dB - 4l/s = 11 dB
* IPB results, November 2006 installation according to EN 14366.


1. Dampener –elastomer EPDM
2. M8-M10 nut – galvanised bichromated steel
3. Retainer cup – AISI 304 stainless steel
4. Small dish – AISI 304 stainless steel
5. M8-M10 tapped base - galvanised bichromated steel



Acoustic bracket installation


For vertical pipe stack: one acoustic bracket minimum per 3 metres. 

 The combination of stack support bracket with rubber gasket and
PAM Acoustic considerably dampens structure-borne noise.


Horizontal suspended pipework: two acoustic brackets minimum per 3 metres.





Horizontal pipework: fixing brackets on side as per diagram is not recommended.
This will lead to product failure