Signs you need this
- • A resident in a North End or Acushnet Avenue-corridor triple-decker hears footsteps, TV, or conversation clearly through the ceiling or the party wall shared with the next unit.
- • A condo association downtown fields repeated noise complaints between units, and the standard single layer of drywall in the demising wall isn't stopping normal daily sound from carrying.
- • A landlord managing a two-family or triple-decker gets recurring tenant complaints about noise from the unit above or next door, and it's affecting lease renewals.
New Bedford Drywall & Plaster builds sound-dampening wall and ceiling assemblies for party walls, demising walls, and rooms that need acoustic isolation from adjoining space. Depending on the situation and budget, that means QuietRock sound-dampening board, resilient channel that decouples the drywall from the framing so vibration doesn’t transfer directly through, or a combination of both. This is different from a standard finish wall: the goal is measurably reducing how much sound passes through the assembly, not just covering the framing, and the approach is chosen based on what’s transferring, footsteps and impact noise versus voices and airborne sound, and what the wall or ceiling structure allows.
This service is for landlords and property managers of North End and Acushnet Avenue-area triple-deckers and two-families dealing with tenant noise complaints between units, and for condo associations downtown managing demising wall noise complaints between owners. It’s also for homeowners in a two-family converting part of the house to a rental unit who want to soundproof the party wall or ceiling proactively before a tenant moves in, and for owners of home offices, music rooms, or media rooms wanting sound isolation from the rest of the house, independent of any multi-unit noise issue.
Materials & standards
Products & materials we use
- QuietRock
- USG Sheetrock
Standards & codes we work to
- Massachusetts State Building Code (780 CMR)
What the terms mean
- party wall
- demising wall
- resilient channel
- sound dampening
- decoupling
- airborne noise
- impact noise
- acoustic sealing
Options & variants
| Option | When it applies | Cost |
|---|---|---|
| QuietRock board only | Retrofit situations where opening the wall to add resilient channel isn't practical | Moderate increase over standard board |
| Resilient channel with standard board | New or open-wall construction where decoupling from framing is the priority | Moderate cost, more labor-intensive install |
| QuietRock plus resilient channel | Maximum sound isolation for party walls or demising walls with persistent complaints | Higher cost, best isolation performance |
| Ceiling-only assembly | Footstep and impact noise transferring from the unit above | Scoped to ceiling square footage |
What affects cost
- • Total square footage of the wall or ceiling being treated.
- • Whether the wall is already open, mid-renovation, or needs to be opened specifically for this work.
- • Which acoustic assembly is specified: QuietRock alone, resilient channel alone, or both together.
- • Whether the noise complaint is primarily airborne, voices and TV, or impact, footsteps, since the right assembly differs by noise type.
- • Number of penetrations, outlets, and fixtures in the wall that need acoustic sealing to avoid leaving a sound path around the new assembly.
What to expect
- 1
Assess the noise
New Bedford Drywall & Plaster assesses the wall or ceiling and talks through what kind of noise is the problem, footsteps and impact versus voices and general airborne sound.
- 2
Recommend the assembly
The crew recommends the acoustic assembly that fits the noise type, the budget, and whether the wall is already open or needs to be opened.
- 3
Install resilient channel
If resilient channel is part of the assembly, it's installed on the framing first to decouple the new board from direct vibration transfer.
- 4
Hang and seal
QuietRock or standard board goes up over the assembly, with outlets, switches, and any penetrations acoustically sealed rather than left as open sound paths.
- 5
Finish and walk through
Taping, finishing, and a walkthrough confirm the assembly is complete and ready for paint.
When this isn’t the right call
- If the wall or ceiling just needs standard drywall with no acoustic goal, a standard drywall installation is the better fit.
- If the noise issue is coming from a basement floor above rather than a party wall between units, basement finishing work that incorporates sound dampening into the framing plan is the better fit.
- If the wall is already finished and just needs mud and tape on existing board, with no acoustic assembly involved, standard taping and finishing is the better fit.
- If the source of the noise is a mechanical issue, like an HVAC unit or plumbing vibration, rather than sound transfer through the wall assembly itself, that needs to be addressed at the source, not with a wall assembly change.
Frequently asked questions
Will soundproofing drywall eliminate noise completely? +
No assembly eliminates sound entirely, but a properly specified QuietRock and resilient channel assembly significantly reduces how much sound transfers through a wall or ceiling compared to a standard single layer of drywall.
What's the difference between QuietRock and resilient channel? +
QuietRock is a sound-dampening board itself, useful where opening the wall to add framing components isn't practical. Resilient channel is a metal furring strip that decouples the drywall from the framing so vibration doesn't transfer directly through the studs. Used together, they address both airborne and impact noise more effectively than either alone.
My condo association wants to soundproof between units. Can you work with a board or property manager directly? +
Yes, New Bedford Drywall & Plaster works with condo associations and property managers on demising wall projects, including assessing multiple units if the noise complaint spans more than one wall.
Does this work for footstep noise from the unit above, not just voices through a wall? +
Yes, footstep and impact noise is addressed differently than airborne voice noise, typically through a ceiling-focused assembly rather than a wall assembly, and the recommendation depends on which type of noise is the actual complaint.
Can soundproofing be added without opening up my finished wall? +
QuietRock board can be installed as an additional layer in some retrofit situations without a full wall opening, though resilient channel requires access to the framing, which typically means opening the wall.
How much does soundproofing add to a standard drywall job? +
It depends on which assembly is specified. QuietRock alone adds a moderate premium over standard board; combining it with resilient channel adds more due to the additional framing labor, but delivers the best isolation.
Is this worth it for a home office or music room, not just multi-unit noise? +
Yes, the same assemblies used for party wall and demising wall noise work equally well for isolating a home office, music room, or media room from the rest of a single-family house.