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Wall Sections

7 wall assemblies with layer-by-layer construction details. All STC ratings and layer stacks from SSOT.

Wall 1: North concrete wall

STC Rating65
Field STC Est.58–62
Treatment Depth10 cm
Total Layers6
ROOM SIDE EXT SIDE 300mm 25mm —mm 25mm 50mm 25mm
concrete (300mm) air gap (25mm) RSIC-1 clips hat channel (25mm) rockwool (50mm) 2x gypsum (25mm)

Concrete mass + resilient clips; field loss from penetrations and edge sealing

Wall 2: NW diagonal concrete

STC Rating65
Field STC Est.58–62
Treatment Depth10 cm
Total Layers6
ROOM SIDE EXT SIDE 300mm 25mm —mm 25mm 50mm 25mm
concrete (300mm) air gap (25mm) RSIC-V clips hat channel (25mm) rockwool (50mm) 2x gypsum (25mm)

Concrete mass + resilient clips; angled geometry improves diffusion but complicates edge sealing

Wall 3: East server wall

STC Rating62
Field STC Est.55–59
Treatment Depth16 cm
Total Layers4
ROOM SIDE EXT SIDE 100mm 32mm 70mm 32mm
air gap (existing) (100mm) 2x16mm gypsum + Green Glue (32mm) 70mm studs + rockwool (70mm) 2x16mm gypsum + Green Glue (32mm)

Decoupled stud + existing air gap; server-side vibration may reduce performance

Wall 4: South rebuilt

STC Rating50
Field STC Est.44–48
Treatment Depth15 cm
Total Layers5
ROOM SIDE EXT SIDE 25mm 3mm 100mm 3mm 25mm
2x12.5mm gypsum (25mm) Green Glue (3mm) [AC] 100mm studs + Rockwool RW100 (100mm) Green Glue (3mm) [AC] 2x12.5mm gypsum (25mm)

Green Glue CLD on both faces is required [AC]; D1 exterior door is still the weakest link in this wall.

Wall 5: Buffer spine

STC Rating55
Field STC Est.49–53
Treatment Depth15 cm
Total Layers5
ROOM SIDE EXT SIDE 25mm 3mm 100mm 3mm 25mm
2x12.5mm gypsum (25mm) Green Glue (3mm) 100mm studs + rockwool (100mm) Green Glue (3mm) 2x12.5mm gypsum (25mm)

Green Glue CLD improves mid-frequency; duct penetrations must be fully sealed

Wall 6: VO/Control partition

STC Rating53
Field STC Est.47–51
Treatment Depth12 cm
Total Layers3
ROOM SIDE EXT SIDE 25mm 70mm 25mm
2x12.5mm gypsum (25mm) 70mm staggered studs + RWA45 rockwool (70mm) 2x12.5mm gypsum (25mm)

Staggered-stud partition with no Green Glue; observation window remains the weakest element and composite STC depends on seal integrity.

Wall 7: Video Studio/Editing partition

STC Rating48 UPGRADED
Field STC Est.43–46
Treatment Depth11 cm
Total Layers4
ROOM SIDE EXT SIDE 25mm 3mm 70mm 12.5mm
2x12.5mm gypsum (25mm) Green Glue studio side only (3mm) [AC] 70mm studs + RWA45 rockwool (70mm) 12.5mm gypsum (12.5mm)

Upgraded from legacy STC40 to STC 48 (SSOT v3.7). Green Glue is required on the studio side only [AC] and is critical for mid-frequency isolation.