Wood Stud Wall Stc Ratings

Remember that a standard wood stud wall has an stc of 35 while a metal stud wall 25 gauge has an stc of 44.

Wood stud wall stc ratings.

Staggered or double stud walls are higher rated than single stud walls. Stc description system rating test no. Double layer 1 2 13 mm type x gypsum board one side single layer other side. The stc and iic ratings 1 2 2.

The column with the three dots is 1 2 3. Staggered wood studs on single plates for information which may be added at a 1 2 4. In order to achieve an stc of 50 and higher you must stagger or double the studs for wood stud walls use a resilient mount such as iso clips and or add multiple layers of soundproofing materials or drywall. In some cases these interior walls are also used as shear walls utilizing plywood or osb on one or both sides of the wall.

Double wood studs on separate plates future date. 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. Adding additional layers of drywall can improve the stc rating of an assembly. Fire rated construction acoustical performance partition applications fire detail physical data description test no.

Appropriate stc performance for walls are typically justified through the use of a tested assembly. Insulation will noticeably improve the stc rating of an assembly. Single wood studs are shown in bold face type in another with decoupling connectors column. One has an stc 47 4 solid concrete the other an stc 48 steel stud wall.

Resilient channel can improve the stc rating of an assembly. One thicknesses 35 8 92 mm. Metal stud walls perform better than wood stud walls. Note that in the low frequency range important for music theaters traffic aircraft and most other real world noise sources the lower stc wall is literally 30 decibels better yet lower stc.

However most tested assemblies do not include wood structural panels wsps. Stc rating 55 to 59 author.