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THE BENEFIT OF NOISEPROOFING

EFFECTS OF DAMPING

Damping is one of the most fundamental aspects of noiseproofing a new or existing wall structure. Put simply, damping is about reducing or eliminating stored energy created by sound. If you put up a wall between two rooms and the wall has no damping, sound in one room will simply pass through the wall and enter the next room as sound. If you want to isolate that sound, you want the best damping you can find.

Damping first works by reducing the vibration caused by sound, known as resonance, and then by dissipating this vibration as it travels through a structure like a wall. At most frequencies, a wall’s mass offers resistance to airborne sound, and the heavier the wall the more difficult it is for sound to vibrate the wall’s surface. At some frequencies, however, it is difficult to prevent sound from vibrating surfaces. These frequencies are called resonant points.

If a structure has low damping, sound vibration can travel across it for great distances. In fact, poor damping of common building materials like drywall or wood is largely responsible for the noise problems that homeowners experience.

The comparison charts below illustrate how effectively Green Glue Noiseproofing Compound dampens a wall structure by reducing the energy transfer of noise between one room and another. The Compound significantly reduces structure-borne sound and also reduces flanking noise.

            

To learn more about the science of sound damping, click here.