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Will spray insulation used inside dampen noise for unit to unit?
Wiki User
∙ 13y ago
Assuming you mean occupation units, then the answer is no. You'd be lucky to get 4dB reduction by adding sound absorber to both rooms. Which would interfere with their natural acoustic properties anyway.
A sound barrier is what is needed, and the appropriate sound isolation between units would be about 55dB or better.
This will require several inches of concrete, or a double-wall construction of plaster board of about 25mm equivalent of board in each wall. With a double wall system - not connected to each other than at the periphery, and without any perforations.
[And assuming there are no flanking paths such as through a common ceiling plenum.]
Spray materials are useful for reducing the reverberance in a space, and might decrease the noise level by up to 15dB in a pretty ideal situation. If the space between the double walls above had some sound absorber (fibreglass, or other light weight fibrous material) in the cavity, that would improve the sound isolation by 5dB or so. [As the small space between the walls would not be very reverberant.]
Wiki User
∙ 13y ago
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