Stc Rating Drywall 2 Sheets

2 4 stud 5 8 drywall 2 layers total plus batt insulation stc of 34 39 5 8 metal studs 5 8 drywall 2 layers total plus batt insulation stc of 43 44 with two sheets total of 5 8 drywall utilizing standard insulation we often see stc ratings ranging between 30 34.

Stc rating drywall 2 sheets.

Use of soundbreak xp drywall results in wall partitions with high rated stc values that are thinner than traditionally built high rated stc wall partitions providing increased usable floor space. The sheets are available in thicknesses of 1 2 5 8 and 1 3 8 with dimensions of 4 x8 9 or 10 feet. 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. They are logarithmic values and cannot simply be added.

925 600 0618 technical bulletin stc ratings steel stud framed walls sound transmission class stc is an integer rating of how well a framed wall attenuates sound. You can find this type of drywall at your local home depot or by clicking this link. You might get something around stc 35. Of course the 5 8 sheets of drywall will be much heavier than the 1 2 but now you can buy a lighter 5 8 sheetrock called usg ultralight firecode tapered edge gypsum board.

You cannot add stc ratings. Superior sound damping cost efficient material that is easily finished and decorated in the same manner as standard gypsum board.