Soundproofing your condo or house

Old structures, with their wooden joists and walls, transmit sound in surprising ways, transforming condo life into a cacophony where we hear everything from a neighbor’s sneeze to animated conversations. Fortunately, there are soundproofing materials and effective techniques for creating a sound-absorbing box, allowing us to regain peace and maintain good relations with our neighbors.

Understanding Sounds to Better Insulate Them

First, we must understand that not all noise is transmitted in the same way. There is impact noise, such as heavy footsteps or a falling object, which is measured using the IIC (Impact Insulation Class) rating. And there is ambient noise, such as music or conversations, which is measured using the STC (Sound Transmission Class) rating. Sound travels either through air or by vibration, and each type requires a specific insulation approach. It is essential to take these two types of noise into account for successful soundproofing.

Materials used to insulate noise

To create an effective acoustic barrier, you must ensure that each component of the building is well soundproofed. Walls and ceilings are the focal points. Soundproofing mineral wool, cellulose, or Sonopan panels can be used between joists and studs to absorb sounds within the assembly. Rigid panels such as gypsum or plywood should also be used to create an airtight surface.

A professional technique for soundproofing walls and ceilings

To really do things well, don’t hesitate to go all out. It’s like a boat: if it’s poorly sealed, it will sink. It’s the same for soundproofing. We start by stripping the ceiling and walls down to the frame to install soundproofing mineral wool or cellulose between the joists and studs. Next, we install Sonopan acoustic panels and apply a bead of acoustic sealant all around to ensure a perfect seal. The next step is crucial: we install resilient bars perpendicular to the joists and studs. These bars will separate the surface of the wood structures, creating an acoustic barrier to prevent vibrations from being transmitted. Finally, we apply one or two layers of heavy gypsum over the resilient bars, staggering the joints to prevent sound from seeping through.

The details that make all the difference

Soundproofing doesn’t stop at walls and ceilings. The room’s door is often the weak point. If you have a hollow-core door, you should replace it with a solid door. It’s also important to properly seal the space around the door frame and install quality weatherstripping for optimal insulation. If possible, you should tackle the flooring. If you don’t want to install carpet, which is a simple option, you can opt for an acoustic membrane under the flooring, such as convoluted foam or rubber. The goal is to separate the flooring from the plywood, avoiding direct nailing, so that vibrations don’t propagate.

With these techniques, we can create a haven of peace and preserve our tranquility. Isn’t this the best way to live in harmony with our neighbors?