Portland Metro · Oregon
Soundproof Drywall Installation in Portland, OR
QuietRock, resilient channel, double-layer 5/8" and sealed detailing — real sound isolation.
Soundproofing is an assembly, not a product. Adding 'thicker drywall' alone rarely delivers the isolation people expect. We install acoustic and sound-isolation drywall assemblies according to project specifications.
What soundproof drywall installation really involves
Real sound isolation comes from four things: mass, decoupling, damping and sealing. That means enough drywall (mass), a break in the sound path with resilient channel or a second stud row (decoupling), viscoelastic damping between two layers (QuietRock or similar), and sealed penetrations at outlets, ducts and top plates. Any one of those steps skipped drops the whole assembly's performance.
For home theaters, bedrooms, home offices and ADU separation, we install the sound-isolation drywall assembly specified for the project. Achieved performance depends on the complete assembly and site conditions.
Ceiling isolation is a different problem — footfall from upstairs is impact sound, not airborne sound, and needs a different detail (isolation clips, resilient channel and a dropped ceiling assembly). We install both according to project specifications.
What we cover under soundproof drywall installation
Home theater walls and ceiling
Specified acoustic assemblies with QuietRock, resilient channel and sealed penetrations.
Primary bedroom demising walls
Sound-rated walls between primary and adjacent living space.
Home office soundproofing
Acoustic drywall details for home offices according to the specified assembly.
ADU sound separation
Sound-rated wall and ceiling between ADU and main house for privacy and code.
Music room / studio walls
Higher-mass assemblies for practice rooms and small studios.
Rental / duplex demising walls
Code-required sound rating for shared walls in ADUs and small multi-family.
Between-floor ceiling isolation
Resilient clips and channel for impact-noise reduction from upstairs.
Our process
The same repeatable process on every soundproof drywall installation job — no surprises, no hand-offs.
- 01
Sound goal review
What sound are you trying to block, and to what level? Sets the assembly.
- 02
Assembly specification review
Single vs double stud, RC vs isolation clips and mass layer count reviewed against project specifications.
- 03
Cavity insulation
Mineral wool or high-density fiberglass batts (not standard low-density) for absorption.
- 04
Decoupling layer
Resilient channel or isolation clips installed to break the sound path.
- 05
First and second drywall layer
5/8" board first, then QuietRock or a second 5/8" layer with damping compound between.
- 06
Seal every penetration
Outlets back-boxed with putty pads, top plates sealed, door bottoms detailed.
- 07
Finish and paint
Level 4 finish, texture as preferred, prime and paint — standard finish scope on top of the sound assembly.
Why choose Aesthetic Construction
Portland's ADU boom, home theater builds in Lake Oswego and West Linn, and the rise of full-time remote workers in Beaverton, Bethany and Bull Mountain keep our sound-rated wall work busy. Downtown Portland condo owners also call us for demising wall upgrades between units.
- Installation to the specified assembly — not just 'thicker drywall'.
- Mineral wool insulation as default in sound cavities.
- Every outlet back-boxed with putty pads — sealed penetrations matter.
- Resilient channel and isolation clips installed correctly (a common failure point).
- Acoustic installation details identified in the agreed scope and project specifications.
- Licensed, bonded, insured — Oregon CCB #252320.
What you get
- Acoustic drywall installation according to the specified assembly.
- Sound-isolation assemblies for home theaters.
- Sound-isolation assemblies for home offices.
- ADU sound-isolation assemblies installed according to project specifications.
Frequently asked questions
Is thicker drywall enough to soundproof a room?
No — mass alone is a small piece of the puzzle. Real isolation comes from a full assembly: mass, decoupling, damping and sealing. Skipping any one drops performance dramatically.
What is QuietRock?
QuietRock is a sound-damping drywall with a viscoelastic layer sandwiched between two gypsum layers. Performance depends on the complete specified assembly and site conditions. We install QuietRock or equivalent (Gold Bond SoundBreak, CertainTeed SilentFX).
Do I need resilient channel?
The project specifications determine whether resilient channel, isolation clips or another detail is required. We install the decoupling system called for by the specified assembly.
Can you soundproof my existing wall?
Yes — retrofit is possible but not as effective as building new. We add a second stud row with damping layers where wall thickness allows, or add a second-side layer with sealed penetrations.
How much does soundproof drywall installation cost?
Typical soundproof wall assemblies run $18–$40 per square foot depending on target STC and complexity. Free itemized estimate with recommended assembly.
Do you handle ceiling sound isolation?
Yes — resilient clips plus RC on the ceiling underside is the standard detail for reducing footfall and airborne sound from upstairs.
Do you soundproof ADU demising walls?
Yes — acoustic and sound-isolation drywall assemblies installed according to project specifications.
Will the finished wall look different?
No — sound-rated walls finish the same as standard walls: Level 4, texture and paint. The mass and detailing all live inside the assembly.
Related services
Fire-Rated Drywall Installation
Type X and Type C 5/8" on garage walls, ADU separations, multi-family and commercial assemblies.
View detailsADU Drywall Services
Detached, attached and garage-conversion ADUs — code-correct fire and sound assemblies, finish, paint.
View detailsBasement Drywall Installation
Moisture-aware, mold-resistant, finish-ready drywall for Portland basement remodels.
View detailsOffice Drywall Installation
Select small-office drywall projects, with scope and scheduling reviewed individually.
View detailsFor Builders & General Contractors
Drywall subcontracting for new construction and small commercial projects
Hanging, taping, mudding, Level 4 and Level 5 finishing, texture and interior painting — with reliable scheduling, professional communication and clean jobsites. Licensed, bonded and insured · Oregon CCB #252320.
COI and W-9 available on request.
Request a free soundproof drywall installation estimate
Written, itemized and no obligation. We respond to estimate inquiries received during business hours the same business day. Written-estimate timing depends on project scope and any required assessment.
Oregon CCB #252320. Fully insured on every project. Certificates on request.
Available across the Portland metro
Soundproof Drywall Installation is available in every city we serve.