How to Soundproof a Room From Outside Noise

How to Soundproof a Room From Outside Noise
September 03, 2021

Peace and quiet at home are more valuable than ever. We all need a comfortable, distraction-free space we can call our own, but some buildings leak more noise than others. If excessive amounts of noise permeating your walls is interfering with your relaxation or work, it’s time to learn how to block noise from outside. From the windows to the walls to the vents, ducts and crawls — this post will cover some ways to stop noise from getting into your home.


Walls are another common entryway for outside noise. To thoroughly address the problem, consider soundproofing tactics for your home’s interior and exterior walls alike.

Start outside with the walls closest to the source. Inspect your exterior walls for any cracks or holes and fill them with acoustical sealant. If you have the budget to do so, update your home’s siding with vinyl panels that bounce noise back toward its source.

Moving inside now, you can line your walls with acoustic foam panels to soak up any noise that gets through. Another clever trick is to insulate your walls with soundproofing insulation. This way, you’ll have a thicker, more absorptive barrier between your home and the noise sources outside.


Like windows, doors present a worthy soundproofing challenge. Even the most careful installations leave small cracks at the bottom or along the sides of a door. Your weatherstripping should keep most air and noise out, but some doors need extra help. If you notice light peeking through along the sides or bottom of your door, install door seals or sweeps to fill the gaps.

Vents, Ducts and Crawls

The systems that help you feel comfortable in your home can also be some of the worst offenders when it comes to letting outside noise get in. As nice as it is to have an air conditioning system at home, its vents essentially direct outside noise right into your room.

While you’ll want to leave vents and ducts free of obstruction, you can still soundproof them to create softer surfaces that absorb more sound than they reflect. Sound barriers for homes are safe to install around your air vents and can effectively guard against airborne and contact noise.


Windows are one of the most common culprits for leaking outside noise, and they’re also one of the trickiest to soundproof. After all, part of the appeal of windows is that they open to let air in and out. How do you soundproof a window without compromising its function?

One way is to seal any cracks with acoustical sound sealant. Similarly, apply acoustic tape to prevent noise from squeaking through the seams. For any sound that makes it through your seal, hang curtains with enough weight to absorb most of the frequencies.

Learn More With the Soundproof Cow

At the Soundproof Cow, we develop solutions that address every noise issue homeowners may experience. We’ll even perform a free acoustical analysis and give our recommendations. To learn more home soundproofing tips from the Soundproof Cow, contact us online today!