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SOME NOISE CONTROL FACTS - ACTS
The major factor controlling the sound insulation of a given type of cavity floor is the sum of the masses per
Of lesser importance, but still significant, are the thickness and density of the sound absorbing material.
Floor/ceiling assemblies having no sound absorbing materials provide about 8 STC points less than the
Joist type floor/ceiling assemblies without resilient channels do not achieve an STC 50 in any practical
Wood furring or metal hat channels to support the gypsum board ceiling are markedly inferior to resilient
Attaching the sub-floor material to the joists with both construction adhesive and nails gave approximately
Joist floors with ceiling assemblies having resilient channels between 2 layers of gypsum board give very
Applying sound absorbing material in the cavity of a joist floor with a ceiling that is not resiliently suspended
Floors with concrete toppings and no additional resilient surface or support, typically will get impact
Example Floor Ratings
|Reference: Summary report for Consortium on Fire Resistance and Insulation of Floors - IRC Internal Report - Nation Research Council of Canada.