Bitumen is an excellent structure-borne sound absorbent because it has a very high volume weight. Especially good for dampening metal-rattling sound.
The material is flexible and can easily be folded over corners when for example insulating a cabinet. There is probably bitumen under your kitchen sink for dampening the water on metal sound.
Accessible both with and without aluminum foil for extra thermal resisting properties.
Volume weight: 3,5 -7,5Kg/m2
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