How to Soundproof a Wall After Construction

Whether you're hoping to cut the noise from outside coming in or to prevent the racket from exiting a specific space, soundproofing a room has many advantages. The proper sound insulation for walls put in place with the right techniques using the correct tools will promise a durable soundproof room for many years to come. Soundproofing a space can be messy, with fibrous installation needing to be cut or composite mats cut and adhered to a wall.

Empty room
credit: R.Tsubin/Moment/GettyImages
How to Soundproof a Wall After Construction

Why Typical Home Walls Aren’t Soundproof

Drywall that rests against framed studs that make up the rooms in a home offers quite a lot of privacy from prying eyes once a door is closed to the outside world. What the typical home build doesn't offer is privacy from the noise of other people going about their daily lives, from blaring televisions or computers to beats that reverberate through the less-than-perfectly insulated walls. The spaces between the studs of interior rooms in most homes don't have insulation at all. Sound bounces around inside these empty spaces, making for a muffled but magnified annoyance.

Benefits of Soundproofing Walls

The benefit of soundproof walls is that they'll hold sound in a space, such as an insulated garage or interior room that doubles as a practice place for musicians or avid video gamers. It can also do a good job in keeping the din of daily life on the street from finding its way into the serenity of the sanctum you call home. For those who work at night and sleep during the day, this can be very beneficial. For those who are light sleepers, the typical neighborhood cacophony won't interrupt their much-needed slumber.

How to Soundproof Walls

The labor-intensive project shouldn't be taken lightly. The fastest way to add a sound barrier to a room without tearing down walls to get to the space between the studs is to add a special composite material to the walls of the room. There are soundproofing systems for music rooms or other rooms from which you want to stop sound from entering or leaving. You can use sheets of installation with a safe and smooth barrier or batting that can be hung on walls and secured at close intervals until it covers the entire space. Don't attach raw and fibrous insulation on a wall without some protective barrier or you may have problems with breathing and skin irritations in the future.