Stc 50 Wall Insulation

3 thick rockwool afb semi rigid batt insulation.

Stc 50 wall insulation.

Area separation wall systems area separation wall submittal sheet sa925 wb2129 sheetrock shaft wall systems tested systems achieve up to 58 stc. Metal stud walls perform better than wood stud walls. 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. Staggered or double stud walls are higher rated than single stud walls.

Sound control insulation to reduce sound transmission between adjacent rooms such as offices conference rooms service areas and the like. Weigh at least 50 less than masonry walls allowing faster easier installation for more information see the following brochures. Stc ratings steel stud framed walls sound transmission class stc is an integer rating of how well a framed wall attenuates sound. Nevertheless stc 50 ings are.

If you have an stc 45 wall this does not mean the wall stops 45 db of sound. You cannot add stc ratings. Adding additional layers of drywall can improve the stc rating of an assembly. 5 8 gypsum board type x 1 layer one side 2 layers on the other side.

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. Is the minimum rating by state law. Some of the common airborne approve another s of a similar design which sound transmission flanking paths in build shows an stc of 50.

Resilient channel can improve the stc rating of an assembly. You might get something around stc 35. 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. They are logarithmic values and cannot simply be added.

3 5 8 steel studs 25 gauge spaced 16 on center. Installing absorptive insulation for example fiberglass batts and blow in cellulose into the wall or ceiling cavities does increase the sound transmission class significantly. An empty framed wall steel studs and a layer of gypsum wallboard on each side has an stc of approximately 35. Stc 50 lab test 5 tl 93 333 alternative stc 50 wall options.

Insulation will noticeably improve the stc rating of an assembly. 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. The presence of insulation in single 2x4 wood stud framing spaced 16 406 mm on center results in only a few stc points.