Alternative STC 50 Wall Options

January 1, 1

STC 50 WALL ASSEMBLY

5/8” type X, gypsum board – 1 layer one side, 2 layers on the other side
3-5/8” steel studs (25 gauge) spaced 24” on center
1-1/2” thick ROCKWOOL AFB® Semi-Rigid Batt Insulation
STC 51 (lab test³ #TL-92-397)

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STC 50 WALL ASSEMBLY

5/8” type X, gypsum board – 2 layers each side
2-1/2” steel studs (25 gauge) spaced 16” on center
2-1/2” thick ROCKWOOL AFB® Semi-Rigid Batt Insulation
STC 52 (lab test³ #TL-93-063)

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Additional acoustics content

Product Benefits

Sound insulation of ceilings is measured using Ceiling Attenuation Class (CAC). Ceilings should be used for sound absorption and not for blocking sound between rooms. High-insulating wall products, as measured by Sound Transmission Class (STC), should be used to for blocking noise at an STC 45 or higher.

Product Benefits

Background Sound Acoustics

Background white noise, such as the ambient sounds generated by HVAC systems, computers and outside traffic, should be considered as part of the building design. Sound masking systems may be needed to comply with acoustic standards’ noise level requirements.