CONDO SOUNDPROOFING

Condo noise comes from the neighbors you share the structure with, and it enters through the surfaces that separate your unit from theirs. As a condo owner, you can treat your own unit but not the neighbor's, so soundproofing is applied entirely from your side.

Footsteps from the unit above are the most common complaint. Walking, dropped objects, and moving furniture transmit vibration through the shared floor-ceiling structure and radiate as sound into your unit below.

Voices and music travel through shared walls. Sound from the units beside you passes through lightweight wall sections and gaps into your living space.

Plumbing and HVAC noise travels through the building's shared systems. Pipes, mechanical equipment, and ductwork carry sound between units through the structure and service chases.

Street noise adds to the total. Units facing busy roads receive exterior noise through the exterior walls and windows, in addition to noise from neighbors.

Condos transmit two types of noise, each measured by a different rating, and treating them correctly depends on distinguishing between them. Impact noise is rated by Impact Insulation Class (IIC), and airborne noise by Sound Transmission Class (STC), with higher numbers indicating better performance in each case.

Impact noise is created by contact with the structure, such as footsteps from the unit above. It is reduced by decoupling and resilient isolation, which separate the surface from the structure so vibration does not radiate into your unit.

Airborne noise is created by sound in the air, such as voices and music from neighboring units. It is reduced by adding mass and sealing gaps so the sound waves cannot pass through the shared wall.

Each surface is treated from your side. Shared walls are treated on your face of the wall, footsteps from above are addressed by soundproofing your ceiling from below, and noise through the floor is handled by treating the floor within your unit.

Our condo soundproofing services cover impact and airborne noise and are applied entirely from inside your own unit. Each service below targets a specific path that neighbor noise takes into your space.

Shared Wall Soundproofing

Shared wall soundproofing blocks airborne noise from the units beside you by adding mass and decoupling to your side of the wall. Mass-loaded barriers, an additional decoupled layer, and sealing gaps raise the STC, so voices and music transmit less into your unit.

Ceiling Soundproofing for Upstairs Noise

Ceiling soundproofing reduces footstep and impact noise coming from the unit above. Isolation clips or resilient channels, combined with added mass, decouple your ceiling from the structure, raising the IIC so that vibration from above radiates less into your space.

Floor Soundproofing

Floor soundproofing addresses impact noise that transfers through the floor of your unit. A resilient underlayment and added mass reduce the noise you transmit to the unit below and help isolate your floor from the structure.

Door and Window Sealing

Door and window sealing blocks noise from the hallway and the street. Solid-core doors, acoustic seals and sweeps, and soundproof window inserts close the gaps through which corridor and outside noise enter the unit.

Effective condo soundproofing depends on identifying whether the problem is impact or airborne noise and treating it correctly, using only the surfaces you own.

Licensed Installers with Decades of Acoustic Experience

Our installers are licensed and have spent decades on soundproofing and acoustic projects in multi-unit buildings. That experience covers walls, ceilings, and floors treated from one side, so the solution is designed around correct acoustic principles rather than a single product.

Impact and Airborne Diagnosed Correctly

We identify whether each noise problem is impact or airborne before specifying anything. This prevents the common mistake of adding mass to a wall for a footstep problem that actually requires ceiling decoupling.

Solutions Applied From Inside Your Own Unit

We design every treatment to be installed from within your unit, without altering shared structural elements or requiring access to a neighbor. Work is planned to respect condo association bylaws and the boundaries of what an owner may modify.

In-House Manufactured Acoustic Materials

We manufacture acoustic materials in Palo Alto and select each product to match the surface and the noise type. This control lets us target STC and IIC performance to your specific unit, rather than forcing a single product on every job.

Our process moves from measurement to verified result in four stages, so each surface is treated for its actual noise problem rather than a general assumption.

On-Site Assessment: Impact vs Airborne, Which Neighbor

We assess whether the noise is impact or airborne and identify which neighboring unit it comes from. This establishes the baseline and determines which surface to treat and from which side.

Treatment Design with STC and IIC Targets

We set STC targets for airborne noise and IIC targets for impact noise based on the assessment. Defining measurable targets ensures each surface is treated to a standard rather than by guesswork.

Installation Inside Your Unit

We install the treatment entirely within your unit and seal the gaps and flanking paths that undermine performance. The work is scheduled to limit disruption to an occupied home.

Verification and Sound Measurement

We measure noise after installation and compare it to the baseline. This confirms the real-world reduction achieved rather than relying on a material's lab rating alone.

Condo soundproofing produces measurable results, but the outcome depends on the noise type and on the fact that only your side of the shared structure is treated, not on the word "soundproof.\"

Treating from one side reduces noise effectively but has a ceiling. Because the full assembly is not rebuilt from both units, a one-sided treatment achieves great improvement rather than the maximum possible from a complete two-sided rebuild.

Airborne noise through shared walls responds well to mass and decoupling. Adding a decoupled mass layer and sealing gaps noticeably reduces voices and music from neighboring units.

Impact noise from the unit above is the hardest to control. Footstep vibration enters the structure directly, so ceiling decoupling and isolation reduce it but rarely eliminate it entirely from your side alone.

Low-frequency noise sets the practical limit. Deep mechanical rumble and heavy footfalls carry long sound waves that require more mass and decoupling than mid- and high-frequency voices.

Condo soundproofing starts with an on-site assessment that separates impact noise from airborne noise, identifies the source neighbor, and sets measurable STC and IIC targets. From there, we design, install, and verify a solution applied entirely from inside your unit.

📞 Call Now to book your assessment, or Request Your Free Quote to get a condo soundproofing plan for your unit.