Soundproofing between units is essential for GTA multi-unit conversions. This thread covers 2026 solutions for floor-to-ceiling and party wall isolation.
Airborne vs. Impact Sound
Airborne (voices, TV): addressed with mass, decoupling, and absorption.
Impact (footsteps, dropped objects): requires decoupling - resilient channels, floating floors, or isolation clips. Impact sound is the #1 complaint in GTA multi-unit conversions.
Floor-to-Ceiling Costs
Resilient channel + second drywall layer on basement ceiling (1,200 sq ft): $4,000-$9,000. QuietFloor or floating floor system: $8-$18/sq ft installed. Full decoupled assembly (clips + acoustic drywall + floating floor): $25-$45/sq ft.
Wall Soundproofing
Mass-loaded vinyl + second drywall layer on party wall: $8-$20/sq ft. Sound isolation clips with hat channel (retrofit): $10-$22/sq ft.
Critical Note
Maintaining decoupling integrity is everything - a single nail through a resilient channel defeats the entire assembly.
LF Builders handles multi-unit renovation and soundproofing: https://lfbuilders.ca
Share soundproofing project experience at https://home.renovation.reviews