Stc 50 Wall Insulation

Partitions and floor ceiling assemblies constructed in accordance with the diagrams shown herein are considered to have sound transmission class stc ratings and impact insulation class iic ratings of 50 as shown.

Stc 50 wall insulation.

Walls and both airborne and impact sound insulation for floor ceiling assemblies. They are logarithmic values and cannot simply be added. Some of the common airborne approve another s of a similar design which sound transmission flanking paths in build shows an stc of 50. Weigh at least 50 less than masonry walls allowing faster easier installation for more information see the following brochures.

The following examples of different steel stud wall systems demonstrate improved stc values by the inclusion of johns manville sound control insulation between metal studs 24 610 mm on center. 5 8 gypsum board type x 1 layer one side 2 layers on the other side. The presence of insulation in single 2x4 wood stud framing spaced 16 406 mm on center results in only a few stc points. An empty framed wall steel studs and a layer of gypsum wallboard on each side has an stc of approximately 35.

Stc ratings steel stud framed walls sound transmission class stc is an integer rating of how well a framed wall attenuates sound. Tunities for flanking paths or sound leaks company s test showing an stc of 49 and to occur. Doubling the mass of a wall assembly does not double the stc rating. Staggered or double stud walls are higher rated than single stud walls.

Insulation will noticeably improve the stc rating of an assembly. It has an nrc rating of 1 0 performing better at the upper test frequency than the lower end so low frequency noise is still an issue. Owens corning 2 thick soundproofing insulation has a density of 10 lb ft and claims it will add an stc of 18 to your uninsulated wall with an stc of 35 to bring it to an stc of 53. 3 5 8 steel studs 25 gauge spaced 16 on center.

Nevertheless stc 50 ings are. Is the minimum rating by state law. If you have an stc 33 wall and decide to add another sheet of drywall with an stc of 20 you do not get a finished wall with an stc of 53. Stc 50 lab test 5 tl 93 333 alternative stc 50 wall options.

Installing absorptive insulation for example fiberglass batts and blow in cellulose into the wall or ceiling cavities does increase the sound transmission class significantly. Area separation wall systems area separation wall submittal sheet sa925 wb2129 sheetrock shaft wall systems tested systems achieve up to 58 stc. If you have an stc 45 wall this does not mean the wall stops 45 db of sound. 3 thick rockwool afb semi rigid batt insulation.

Sound control insulation to reduce sound transmission between adjacent rooms such as offices conference rooms service areas and the like. Resilient channel can improve the stc rating of an assembly. Metal stud walls perform better than wood stud walls.