Sound and fire control assembly is a mysterious topic for many Drywall contractors. This article is an excerpt form book called “DRYWALL” by “W. ROGER HARRIS“. Flex Drywall repair hopes this helps our fellow home repair contractors.

INSTALLING SOUND-CONTROL ASSEMBLIES:

Five installations steps are recommended and should be followed when installing sound-control assemblies:

 1. Do not leave gaps between the ends or edges of the drywall sheets or between the drywall sheets and other materials they butt against.

 2. When constructing multi layer assemblies, the under layer or layers must be installed with the same attention to details as the finish layers.  Voids in the under-layers reduce the sound control effectiveness of the assembly.

 3. All cracks between walls, floor, ceiling or overhead structure, and abutting walls must be caulked with an approved sound-rated sealant.

 4. Cutouts for electrical, plumbing, and mechanical installations should not be straight across from one side of the wall to the other.  Such cutouts should be offset 12” or one stud cavity.

5. When installing sound-control assemblies, do not cut corners.  Sound-
control assemblies must be constructed as shown on the plans and
described in the specifications or according to local building code
requirements.

INTERIOR FIRE-CONTROL ASSEMBLY INSTALLATIONS:

1. Do not leave gaps between the ends or edges of the drywall sheets or between the drywall sheets and other materials they but against.

2. When constructing multi layer assemblies, the under-layers must be
installed with the same attention to detail as the finish layers.  Voids in  the under-layers reduce the fire-resistance effectiveness of the assembly.

3. All cracks and openings between the walls, floor, ceiling or overhead
structure, and abutting walls must be caulked with an approved fire-rated
sealant.

4. Cutouts for electrical, plumbing, and mechanical installations should be sealed with an approved fire-rated sealant.

5. Do not cut corners when installing fire-control assemblies.  Fire-control assemblies must be constructed as shown on the plans and described in the specifications or according to local building code requirements.

Sound and Fire Control Assembly is an important factors to consider during Drywall installation.

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