Kalzip roof constructions can be modified to accommodate various acoustic performance requirements, by incorporating other layers such as high density insulation, acoustic boards and flexible membranes to provide increased sound reduction performance and by perforating the liner to provide improved sound absorption performance.
Kalzip acoustic board is a high density cement-particle board that can easily be incorporated into a Kalzip roof system in order to dramatically increase the mass and subsequently the sound reduction properties of the system.
Kalzip acoustic membrane is a high density rubberised polyethylene sound barrier membrane that can easily also be incorporated into the system to increase the mass and subsequently improve the sound reduction properties. The Kalzip acoustic membrane is typically used in conjunction with the Kalzip acoustic board and can also act as an isolator between boards further enhancing acoustic performance.
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