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How to Soundproof Walls Methods for New and Existing Walls?

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Stacey Shannon
How to Soundproof Walls Methods for New and Existing Walls?

While some neighbors are particularly noisy, sometimes you can do nothing about it. Sure, you can talk to them, but nine times out of ten, they won’t do this on purpose. This means that even if they consciously try toning it down, the effect won’t be so great. After all, you can’t expect them to tiptoe around their home because the walls are paper-thin.


Instead, you need to be the one making an effort to soundproof your home. This is the only way that 100% works and the only way that doesn’t put you at risk of ruining neighborhood relationships. With that in mind and without further ado, here’s how to soundproof your new or existing walls.


How to make a soundproof wall?


When making a new wall, you have a plethora of options in terms of material. Making a cavity wall and filling it with an insulator like mineral wool, spray foam, cellulose, or cork can do wonders. So, if your priority is to ensure optimal privacy, this is the way to go.

Besides this, it’s smart to go for mass-loaded vinyl sound barriers. This is a more expensive material, but it does wonders in effectiveness. It’s also worth pointing out that acoustic caulk makes a ton of difference.


It’s also worth mentioning that your objectives mandate your course of action. Do you want to keep the noise in or out? You don’t want to hear your neighbors’ screaming match, but you don’t want them to hear yours. There’s a difference between noise reflection, absorption, and diffusion; you better learn it beforehand.


How do you soundproof an existing wall?


When building walls, you have more options, but what if you’ve just moved into a place? What if this is not an issue that you could afford to tend to before? What if there are new neighbors in the area that make this a priority? So, you’re looking for the best soundproofing for walls you already have.


First, you need to locate all the gaps. Sometimes, it will not be the walls but the problematic windows. Sometimes, just fixing the window seal can help. At other times, window inserts will do the trick.

Another thing you can do is hang an acoustic curtain on the wall. First of all, the fabric is not as reflective as the wall. Second, it adds an extra barrier between you and the noise source. A similar thing can be said about acoustic panels.


However, doing drywall is probably the most effective method for existing walls. The material's thickness and the work quality make all the difference here. So, while DIY drywall installation can be done, it’s probably better to leave this to experts.


How do I stop the sound between rooms?


Neighbors aren’t your only problem, you see, if more people live in the same house, at times, they’ll produce noise that distracts others. In 2023, more people will work from home than ever before. Even if this didn’t happen, people want to rest and enjoy solitude.

One person wants to watch a movie full volume, and there’s nothing wrong with doing so in your own home if the entire family is on board. However, what if they’re not? What if someone is trying to read or do their homework? Is forsaking your rights as a homeowner the only way to reach a compromise? Of course not! You can have your cake and eat it by soundproofing the interior walls.


The best way to soundproof interior walls is to add mass to them. A frame is a good starting place, but changing the room’s layout can help. A full shelf beside the wall is an incredible soundproofing barrier, and it’s pretty light on your budget.


It’s not just the walls


There are some levels of noise that no insulation can protect you from— the key to not getting disappointed lies in managing your expectations. If you live in an industrial zone or near an airport, there’s only so much you can do.

Gaps are the biggest problem, so start by identifying them. Check your walls and the seal of your window, and thoroughly examine every exterior barrier in your home.


Landscaping is also a factor since hedges and shrubbery make a difference.

Lastly, sound escapes via windows, doors, floors, and ceilings as much as it does via walls. So, if you have noisy neighbors upstairs or downstairs, you might want to reexamine your strategy.


Wrap up


At the end of the day, there are many factors to keeping a quiet neighborhood. While talking to your neighbors about the issue, being honest and forthcoming may be the key to solving the issue; adding an extra layer of acoustic insulation won’t hurt. It will help you become the quieter neighbor you want others to become. As Gandhi once said, “Be the change you want to see in the world.”



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