I get commissions for purchases made through links in this post.
Living in close proximity to others can be wonderful in many ways, but one of the biggest challenges can be dealing with noise from neighboring apartments or rooms. Whether it’s the sound of conversations, footsteps, or music, noise from shared walls can quickly disrupt your peace. The good news is that there are effective ways to soundproof shared walls, giving you a quieter and more comfortable living space. In this blog post, we’ll guide you through the best techniques and solutions for soundproofing shared walls.
Why Soundproof Shared Walls?
Shared walls are common in apartment buildings, townhomes, and duplexes, and they often provide little resistance to sound. Soundproofing your shared walls not only improves your comfort but also promotes better sleep, productivity, and relaxation. It can also reduce potential conflicts with neighbors over noise levels.
By addressing the issue of sound transmission, you can create a space where both you and your neighbors can coexist more peacefully.
How Sound Travels Through Shared Walls
Before diving into soundproofing methods, it’s essential to understand how sound travels through shared walls. Sound waves can pass through various materials and structures, including drywall, studs, and insulation. The effectiveness of the wall’s soundproofing ability depends on the materials used in construction and the presence of any gaps or cracks.
There are two types of sound you’ll need to address:
- Airborne Sound: This includes voices, music, and TV sounds, which are transmitted through the air and pass through walls.
- Impact Sound: These sounds come from vibrations, such as footsteps, furniture moving, or things being dropped. These are transmitted through solid structures like floors and walls.
Best Ways to Soundproof Shared Walls
There are several effective techniques for soundproofing shared walls, ranging from simple DIY solutions to more advanced approaches. Here are some of the most common methods:
1. Add Acoustic Panels or Foam
One of the easiest ways to reduce sound transmission through walls is by using acoustic panels or soundproof foam. These materials are designed to absorb sound waves, reducing the amount of noise that passes through walls.
- Acoustic Panels: These panels are typically made of foam or fiberglass and can be mounted on the wall to absorb sound. They come in various sizes and shapes, so you can choose one that fits your space and aesthetic.
- Soundproof Foam: Like acoustic panels, soundproof foam can be affixed to walls to absorb noise. It’s effective at reducing high-frequency sounds, such as conversations or TV noise.
These materials can be mounted directly on the wall or covered with fabric to make them more aesthetically pleasing. Keep in mind that while they help with sound absorption, they won’t block all sound, especially lower-frequency noises like thumping footsteps.
2. Use Mass-Loaded Vinyl (MLV)
Mass-loaded vinyl (MLV) is one of the most effective soundproofing materials available. It is a dense, flexible material that adds mass to your walls, which helps block both airborne and impact sounds.
You can apply MLV directly to the shared wall, either by hanging it like wallpaper or attaching it using nails or adhesive. Because MLV is dense and flexible, it helps prevent sound from traveling through walls without taking up much space. After applying MLV, you can cover it with drywall or paint to maintain the look of your wall.
3. Seal Gaps and Cracks
One of the most overlooked aspects of soundproofing is sealing gaps and cracks in the walls. Even small openings can allow sound to pass through easily, so it’s crucial to ensure your walls are tightly sealed.
- Use Acoustic Caulk: This special type of caulk remains flexible over time and can effectively seal gaps around the edges of the walls, baseboards, and around outlets. It’s perfect for filling small cracks that may let sound seep through.
- Weatherstripping: If you have a door or window that shares a wall with your neighbor, consider installing weatherstripping along the edges to create a tighter seal.
This method is simple, inexpensive, and can make a noticeable difference in reducing the noise that enters through gaps.
4. Install a Second Layer of Drywall
If you’re willing to invest more time and effort into soundproofing, adding a second layer of drywall to the shared wall is an excellent option. This technique is particularly effective for reducing airborne noise.
When adding the second layer of drywall, use a special type of drywall known as soundproof drywall or quietrock. These are specifically designed to block sound, and when combined with soundproofing glue (such as Green Glue), they form a much more effective barrier than standard drywall.
The added mass from the second layer helps absorb sound waves, preventing them from traveling through the wall. Be aware that this will reduce your wall space slightly, so it’s best for rooms where space is not a major concern.
5. Add Insulation Inside the Wall
If you’re up for a larger project, adding insulation to the cavity of the shared wall can greatly reduce sound transmission. Fiberglass insulation or mineral wool insulation can be installed inside the wall studs to absorb sound vibrations and reduce both airborne and impact noise.
If you are planning to renovate or rebuild, adding insulation is one of the most effective ways to soundproof shared walls. It provides long-term benefits and can make your living space much quieter.
6. Use Furniture and Heavy Curtains
While not as effective as the other methods listed, strategically placing furniture against shared walls can help absorb sound. Bookshelves, large sofas, or cabinets filled with items like books or textiles can act as sound barriers and reduce noise levels.
Additionally, installing heavy curtains or soundproof drapes on your windows and walls can further reduce sound transmission. These curtains are designed to block sound from entering or leaving a room, making them a useful addition to any soundproofing plan.
7. Consider Soundproofing the Floor and Ceiling
While the focus of this article is on soundproofing shared walls, don’t forget about the floor and ceiling. Noise from above or below can be just as disruptive. Installing soundproof flooring materials, such as cork or rubber underlayment, can help reduce impact sound. Similarly, adding acoustic treatments to the ceiling can also prevent noise from traveling between floors.
Conclusion
Soundproofing shared walls can greatly improve your living space, making it quieter and more comfortable. Whether you’re looking to block out noisy neighbors or create a better environment for rest and relaxation, there are various methods to suit your needs and budget. From simple solutions like acoustic foam to more advanced techniques like adding insulation and drywall, each step you take will help minimize sound transmission and create a more peaceful home.