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Sound Transmission through Gypsum Board Walls - Phase II

The NRC-IRC Acoustics Laboratory has completed the measurement phase of the second part of a study of sound transmission through gypsum board walls - Fire Resistance and Sound Performance of Wall Assemblies - Phase II. The project was supported by a consortium that included:

  • Canada Mortgage and Housing Corporation (CMHC),
  • Canadian Sheet Steel Building Institute (CSSBI),
  • Canadian Wood Council (CWC)
  • Cellulose Insulation Manufacturers Association of Canada (CIMAC),
  • Forintek Canada (FORINTEK),
  • Gypsum Manufacturers of Canada (GMC),
  • the Institute for Research in Construction of the National Research Council Canada (NRC-IRC),
  • Owens Corning Fiberglas Canada Inc. (OCFCI), and
  • Roxul Inc. (ROXUL).

A linked study of fire resistance of wall assemblies has also been completed. This second phase of the study provides information on the airborne sound insulation of load-bearing gypsum board wall assemblies, most of which had shear-resistant elements. These were divided almost equally between wood- and steel-stud framing. These types of assemblies extend the range considered in first phase. The combined set of data from both phases of this project provide a database for consistent comparisons of the sound transmission through gypsum board wall systems. The set of data also provides a basis for empirical prediction methods and for development of improved constructions. More immediately, they provide STC data needed by builders and regulators to select constructions suitable for party walls in multi-family dwellings.

The results of this project are described in the internal report: IR-832

Related Project

Sound Transmission through Gypsum Board Walls - Phase I

Related Information

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