There are many types of insulation available on the market today, but not all are effective at soundproofing. If you’re looking for a way to insulate your walls and reduce noise, you may consider using soundproofing insulation.
This type of insulation can be used in various applications, including walls, ceilings, and floors. Soundproofing insulation is designed to absorb sound waves rather than reflect them.
This can help to reduce the amount of noise that is produced in your home, as well as the amount of sound that is transmitted through walls and floors.
What to Consider When Choosing Soundproof Insulation for Walls
There are a few things to remember when looking for the best soundproof insulation for your walls. First, you’ll want to ensure that your product is dense enough to block out noise. This means it should be made of thick, heavy materials like fiberglass or cellulose.
Second, you’ll want to ensure that your product is fire-resistant. This is especially important if you live in an area where wildfires are common. You don’t want your home to go up in flames because your insulation couldn’t protect it.
Finally, you’ll want to ensure that the product you choose is easy to install. Some products require special tools or hardware, while others can be installed with just a few simple steps.
When looking for the best soundproofing insulation for your walls, keep these things in mind, and you’ll be sure to find the perfect product for your needs.
Top 7 Best Insulation for Soundproofing Walls
Batt Insulation
Batt insulation is one of the most popular types on the market today. It is made from fiberglass, rock wool, or recycled paper products and comes in pre-cut batts or rolls. It is easy to install and provides excellent thermal protection for your home. Batt insulation can be used in both new construction and retrofit applications.
The insulation is available in various R-values, indicating its ability to resist heat flow. The higher the R-value, the better the insulation’s performance. Choosing the right R-value for your climate and type of home construction will help you achieve optimal energy efficiency.
It also comes in various widths and thicknesses to fit standard stud cavities. It can also be cut to fit around obstacles, such as plumbing pipes. When installing batt insulation, fill all the holes; leaving gaps will reduce the insulation’s effectiveness.
Batt insulation is an excellent option if you plan to add insulation to your home. It’s easy to install, provides excellent thermal protection, and comes in various R-values to suit your climate and home construction.
Mass Loaded Vinyl
Mass Loaded Vinyl – This dense but flexible material can be used in many ways to soundproof your home. It’s most commonly used as a barrier between two rooms or between the inside of a room and the outside world.
MLV is available in different thicknesses, but the thicker, the better when it comes to soundproofing. You can also find MLV with adhesive backing, making it easy to apply to walls, ceilings, or floors.
Acoustic Foam Panels
This type of foam is often used in recording studios and other places where sound needs to be controlled. The acoustic foam absorbs sound waves, which helps to reduce echo and reverberation.
It’s important to note that acoustic foam is not meant to be used as a sound barrier. It’s designed to control sound within a space, not to keep sound from moving between two spaces.
Acoustic and Soundproof Blankets
There are many types of soundproofing blankets available on the market, each with unique benefits.
Acoustic blankets are one type of soundproofing blanket that can be hung on walls or used to cover windows and doors. These blankets are made of thick, dense material that absorbs sound waves, preventing them from bouncing back and echoing through the room.
On the other hand, soundproof blankets are made of various materials, the most common being fiberglass, mass-loaded vinyl, and quilted fiberglass. Fiberglass is the least expensive option and does a decent job at blocking out sound. However, it can be itchy and challenging to work with.
Mass-loaded vinyl is a bit more expensive but blocks out more sound and is easier to work with. Quilted fiberglass is the most costly option and is also the most effective at blocking sound.
How to Install Soundproof Insulation
Prepare the Room
The first step in installing soundproof insulation would be to prepare the room. This would involve removing all furniture and other objects from the room. Once the room is empty, you will need to clean the floors and walls.
Measure the Dimensions
Measure the room’s dimensions and calculate the amount of insulation you will need to purchase. Soundproof insulation is available in rolls or panels.
I recommend you measure the room’s height and width and calculate how much you need before purchasing the material.
Remove any baseboards or obstacles that might be in the way of installation. Make sure to put something down to protect the floors, such as a tarp or drop cloth.
Gear Up
Gather all items needed for installation. This would include the insulation, adhesive, hooks, and anything else needed for your specific type of insulation.
I recommend wearing protective clothing, such as gloves and a respirator, to avoid any skin or respiratory irritation.
Install the Soundproof Insulation
Start at one corner of the room and begin unrolling the insulation. Apply adhesive to the back of the insulation and attach it to the wall. Continue unrolling and attaching the insulation until you reach the other side of the room.
Use hooks to secure the top of the insulation to the ceiling. Ensure the hooks are evenly spaced so that the insulation does not sag in any areas.
Repeat this process for all walls in the room until the entire space is insulated.
Allow the adhesive to dry completely before adding any furniture or objects back into the room. Enjoy your new soundproofed space.

Cover the Insulation with Drywall
Cover the insulation with drywall or another material to finish the project.
Make sure all seams are sealed with caulk or another sealant. Once the walls are complete, you can add flooring, baseboards, and other trim as desired. Enjoy your new soundproofed space.
Benefits of Soundproof Insulation for Walls
Soundproof insulation can help block out unwanted noise and improve the overall acoustic environment in your space. Here are some of the benefits of using soundproof insulation:
1. Improved Sound Quality
One of the main benefits of soundproof insulation is that it can help to improve the overall sound quality in your space. By blocking out unwanted noise, soundproof insulation can help you achieve an ideal acoustic environment for listening to music, watching movies or TV, or working on projects.
2. Increased Privacy
Another benefit of soundproofing your space is that it can help to increase your privacy. If you live in a small apartment or condo, for example, soundproofing your walls can help reduce the noise your neighbors can hear from your unit. This can be especially beneficial if you work from home and need to make phone calls or hold meetings in private.
3. Improved Energy Efficiency
In addition to its acoustic benefits, soundproof insulation can also help to improve the energy efficiency of your home or office. By blocking out unwanted noise, soundproof insulation can help reduce the energy required to heat or cool your space. This can lead to lower energy bills and a more comfortable environment overall.
4. Enhanced Acoustic Environment
Soundproof insulation can also help create an enhanced acoustic environment in your home or office. By blocking out unwanted noise, soundproof insulation can help improve your space’s overall sound quality. This can make it more enjoyable to listen to music, watch movies or TV, or work on projects.
5. Increased Safety
In addition to its other benefits, soundproofing your space can also help to increase safety. By blocking out loud noises, soundproofing can help to reduce the risk of accidental injury due to loud noises. This is especially beneficial in workplaces where machinery is operated at high noise levels.
6. Improved Workplace Productivity
Another benefit of soundproofing your workplace is that it can help to improve productivity. Soundproofing can help create an ideal work environment by blocking out unwanted noise. This can lead to increased focus and attention and improved work quality overall.
7. Reduced Stress Levels
In addition to its other benefits, soundproofing your space can help reduce stress levels. By blocking out unwanted noise, soundproofing can help to create a more relaxed environment. This can lead to reduced stress and anxiety and improve overall health.
8. Improved Sleep Quality
Another benefit of soundproofing your bedroom is that it can help to improve sleep quality. By blocking out noise, soundproofing can help create a more quiet and peaceful environment. This can lead to deeper and more restful sleep.
9. Enhanced Overall Quality of Life
In addition to its other benefits, soundproofing your home or office can also help to enhance the overall quality of life. Soundproofing can help create a more pleasant environment by blocking out noise. This can lead to a better mood, increased energy levels, and improved overall health.
Sources:
https://www.energy.gov/energysaver/types-insulation
https://acousticalsolutions.com/mass-loaded-vinyl-and-the-correct-uses-for-it/
https://www.noisestopsystems.co.uk/shop/wall-soundproofing/

Hi, my name is Todd R. Bressler and I am the founder of this soundproofing blog. I’m a DIY enthusiast from Cincinnati, the city that just beat New York for the City That Never Sleeps Award in 2020. (Original) I have been in the DIY soundproofing industry for close to 5 years, running a YouTube channel and a Podcast show every Saturday. I started Crafty Soundproofing to help you learn the basics of “self defending yourself against noise”
Have an idea worth sharing? Please contact me and I’ll be happy to respond ASAP.