Stc Drywall 2 Sheets

Combined the sheet will reduce the transmission of sound in or out of a room by between 15 and 20 stc points when compared to standard drywall sheets.

Stc drywall 2 sheets. 5 8 metal studs 5 8 drywall 2 layers total plus batt insulation stc of 43 44. You might get something around stc 35. If you have an stc 45 wall this does not mean the wall stops 45 db of sound. With two total sheets of drywall common for residential interior walls we usually see an stc rating of around 33.

You can find this type of drywall at your local home depot or by clicking this link. The sheets are available in thicknesses of 1 2 5 8 and 1 3 8 with dimensions of 4 x8 9 or 10 feet. 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.

Tips for drywall sheets always choose thick sheets 1 2 or 5 8 if you re installing drywall on your ceiling. With two sheets total of 5 8 drywall utilizing standard insulation we often see stc ratings ranging between 30 34. They are logarithmic values and cannot simply be added. 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.