SPC Solution 1 – Green Glue Wall


The Single Stud Wall with Green Glue

This wall is the least preferred, as it offers no decoupling – both sheets of drywall share the same stud. With the more common 16” OC framing, this wall is only effective at dropping mid and upper frequencies. This is not a solution when Low Frequency bass is an issue.

NOT SUGGESTED FOR 16″ ON CENTER FRAMING

This wall will perform better with 24” OC studs, and / or 25 gauge steel studs.

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Soundproofing Walls - Steel Stud - Solution 1
While this high STC wall variant looks great on paper, the wide 24” spacing of a very flexible 25 gauge steel makes for a very “soft” wall. More easily dented and deformed.


24in OC Wood Wall

Green Glue Transmission Loss Testing

Soundproofing Walls with Green Glue Study - 24OC

  • Wood Wall with Double Green Glue Source Side
  • Soundproof Wall using Glue on both sides on 24" OC Framing
  • Soundproof Wall using Glue on receiving sides on 24" OC Framing

STC Source Side Studs Insulation Receive Side Test #
56 Two layers 5/8″ Gypsum + 58oz of Green Glue per 4×8 sheet 24″ OC R13 Two layers of 5/8″ Gypsum + 2 Tubes of Green Glue per 4×8 sheet View
52 Two 5/8″ layers of Gypsum + 58oz of Green Glue per 4×8 sheet 24″ OC R13 One 5/8″ layer of drywall View

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24in. OC Steel Stud

Wall Type Comparison

STC Source Side Wood Framing Insulation Receive Side Solution
71 Single layer of 5/8" Gypsum Double Stud 24"OC  R13 Two layers 5/8" Gypsum + Green Glue 58OZ per 4x8 + 7/8"  Drywall Furring Channel + IB-1 Soundproofing Clips SPC 3
67 Two 5/8" layer of Gypsum Single Stud 24" OC R13 Two layers 5/8" Gypsum + Green Glue 58OZ per 4x8 + 7/8"  Drywall Furring Channel + IB-1 Soundproofing Clips SPC 2
52 Single layer of 5/8" Gypsum Single Stud 24" OC R13 Two layers 5/8" Gypsum + 58OZ per 4x8 sheet SPC 1
53 Single layer of 5/8" Gypsum Single Stud 24" OC R13 Two layers 5/8" Gypsum + 7/8" Drywall Furring Channel @ 24" OC + IB-1 Clip View
45 Single layer of 5/8" Gypsum Single Stud 24" OC R13 1/2" Gypsum + MLV + 1/2" Gypsum View
42 Single layer of 5/8" Gypsum Single Stud 24" OC R13 Two layer of 5/8" layers of Gyspum View

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Transmission Loss Plot

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SPC - Wall Assembly Solutions


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