Soundproofing Options
Walls
- Acoustic batts in cavity
- Double plasterboard
- Green Glue compound
- Mass loaded vinyl
Floors
- Acoustic underlay
- Floating floors
- Carpet and underlay
Windows
- Double/triple glazing
- Secondary glazing
- Acoustic seals
Costs
- Acoustic wall: $150-300/m²
- Double glazed windows: $600-1,200 each
- Acoustic underlay: $15-40/m²
STC Ratings
Sound Transmission Class measures sound blocking:
- STC 25-30: Normal wall, speech easily heard
- STC 35-40: Speech audible but not intelligible
- STC 50+: Excellent, minimal sound transfer