Soundproof a wall: Best (Level 3)


The Double Stud Wall with Green Glue is our highest performing wall assembly. Currently, most acoustical labs have a hard time plotting double-wall performance accurately, as the wall often exceeds the flanking limits of the lab.

A drawback of this solution is space efficiency. With it, you are basically building two walls, which requires a significant amount of space.

The Double Stud Wall Assembly

Double Stud framing is the most effective way to decouple a wall. Best at Low-Frequency isolation, the Double Stud wall also offers a structural wall to hang very heavy elements such as cabinets, equipment, speakers, etc.

Double Wood Stud Wall Comparison

STC Source Side Framing Gap Framing Receive Side
73 Double layer of 5/8" Gypsum (Type X) with Green Glue 58OZ per 4'x8' sheet 2"x4" Wood Studs 24" On Center R13 Fiberglass 1" 2"x4" Wood Stud 24" On Center R13 Fiberglass Double layer of 5/8" Gypsum (Type X) with Green Glue 58OZ per 4'x8' sheet
71 5/8" Gypsum (Type X) Double layers 5/8" Gypsum (Type X) with Green Glue 58OZ per 4'x8' sheet
67 Double layer of 5/8" Gypsum Double 5/8" Gypsum (Type x)
65 Double layer of 5/8" Gypsum Single layer of 5/8" Gypsum
64 5/8" Gypsum (Type X) Double 5/8" Gypsum (Type x)
60 5/8" Gypsum (Type X) Single layer of 5/8" Gypsum

Double Steel Stud Wall Comparison

STC Source Side Framing Gap Framing Receive Side
74 Double layer of 5/8" Gypsum (Type X) with Green Glue 58OZ per 4'x8' sheet 25GA 2"x4" Steel Studs 24" OC R13 Fiberglass 1" 25GA 2"x4" Steel Studs 24" OC R13 Fiberglass Double layer of 5/8" Gypsum (Type X) with Green Glue 58OZ per 4'x8' sheet
73 5/8" Gypsum (Type X) Double layers 5/8" Gypsum (Type X) with Green Glue 58OZ per 4'x8' sheet
70 Double layer of 5/8" Gypsum Double 5/8" Gypsum (Type x)
68 Double layer of 5/8" Gypsum Single layer of 5/8" Gypsum
64 5/8" Gypsum (Type X) Double 5/8" Gypsum (Type x)
61 5/8" Gypsum (Type X) Single layer of 5/8" Gypsum