How to build a Soundproof Room within a Room?

Have you ever wished for a way to lessen the noise entering your bedroom, workplace, or recording studio from the outside or from the room next to yours?

You can make a room quiet and peaceful using different methods and materials. You might need to look into more complex techniques if you really want to make a room soundproof and completely free from outside noise.

One of the greatest ways to isolate sound and stop it from passing through the walls is to construct a new, isolated room inside the original room. In this article, we’ll discuss the different techniques of building a soundproof room within a room.

How To Build A Soundproof Room Within A Room?

Before you start room soundproofing, understand why you want to soundproof it. Remember the room’s primary use.

Will it be used as a workplace?,

A studio for recording?,

A study room?

Why Should You Soundproof A Room Inside A Room?

The most common reasons for soundproofing a room are to prevent sound from entering and leaving the space. In a recording studio, for instance, it is crucial to prevent outside noise from reaching your microphones and it is equally applicable in the case of office spaces where people need a peaceful environment to concentrate on work.  

Enhancing privacy, increasing home comfort, boosting focus, and keeping sound from leaving or entering a room are all common reasons to soundproof a room.

build soundproof room within a room
soundproof room within a room

Different Methods Of Soundproofing A Room Within A Room

You could feel overwhelmed since soundproofing a room inside another one is fairly difficult and time-consuming. Start the soundproofing process step by step, and over time you’ll achieve the desired result.

  1. Install Drywalls

Installing drywall on decoupled walls is one of the methods of soundproofing a room within a room. The addition of drywall improves sound isolation because it gives the building greater mass, and heavier materials absorb sound waves better. Drywall works exceptionally well in a decoupled system.


To add the most mass, choose the thickest and heaviest drywall you can find! Plywood should be the first layer, followed by a thick 5/8-inch piece of drywall. As ceilings can be the most difficult part of a room within a room to soundproof, you should use up to three sheets of drywall there.

You can also undertake drywall installation as a DIY project. Go through this Youtube video to learn the process.

  1. Decouple The Walls

One of the primary ways in creating a soundproof room within a room is to decouple the walls, which can be achieved in a variety of methods. The best and most efficient method is to use a double wall system, which calls for the construction of an additional wall using two-by-four lumber and steel studs.

There should be a gap of a few inches between the new wall and the foundational wall.  Deeper the wall, the better because it will help to improve low-frequency isolation by creating a greater volume of air.

  1. Insulate The Room

Utilizing insulation is one of the most traditional yet efficient techniques to reduce noise. While pink insulation does not give as much sound absorption as other methods, when done properly and in combination with other sound absorption techniques, it can be a tremendous soundproofing asset.

Adding too much material is a mistake people make while installing insulation. A soundproofed room’s air can become overly dry if there is too much insulation added to the space.

You can ensure that your room is soundproof while still allowing for ventilation and healthy air quality with the help of an effective insulation solution.

  1. Install A Floating Ceiling

Installing a floating ceiling is the next step after soundproofing the walls. By lowering the ceiling and adding more soundproofing to the room, this step completes the soundproofing process.

New ceiling joists must be woven between the original joists to create a floating ceiling. Set up the new joists a few millimeters or an inch below the existing ceiling. These joists help to isolate the space and block off some frequencies. The sole drawback of choosing floating ceilings is that they don’t integrate well with mechanical systems like ductwork and plumbing.

installing floating ceiling
  1. Damping The Drywall

Even though this step is optional, it’s best if done. Damping the walls can be great for sound reduction. Ensuring that the sound is already subsided before entering the room, considerably lowers sound vibrations. Getting costly drywall or a cheap one isn’t advised.  It’s best to get a drywall of normal quality and dampen it with green glue.

  1. Install The Right Door

We covered some of the most important strategies for soundproofing your room, but our discussion is far from over. Consider adding the right door to the soundproof room if you’re willing to go above and beyond and want to get the most out of your efforts.


Your room’s door may be the gap in your soundproof system that allows sound to enter and exit at will if it isn’t designed properly. A thin, flimsy door makes it simple for sound to enter and leave the room. Since solid-core doors block more sound waves than other types of doors, they must be used in soundproof rooms. Unfortunately, most of the homes in US have hollow core doors. Use a waterproof and soundproof door seal to improve soundproofing around the door. It improves the soundproofing near the doorway.

7. Soundproof Windows

Windows allow majority of the noise to enter the room, if you’re considering soundproofing then you should start working on door and windows first. I won’t dig deep into soundproofing windows here because this discussion deserves a separate article.

Here’s a list of things you can do to stop the noise entering through windows:

  1. Install Soundproof Window Inserts
  2. Install Soundproof Curtains
  3. Replace the windows with soundproof windows.
  4. Replace the glass with Acoustic Double Glazed glass.
  5. Create a wall using soundproof panels and put insulation in the air gap.

To Wrap It Up

A soundproof room might be the ideal place to serve as a private office, recording studio, personal movie theatre, or even a bedroom, especially if you live in a hustling and bustling city.

By soundproofing a room, you may be sure that no outside noise can enter. As a result, investing in soundproofing a room is always a great option. Often people soundproof a room without getting satisfying results. Thus, you can construct a room within a room and effectively soundproof them at such times. Whatever the cause, there are several methods to fulfill your goal of soundproofing room within a room.


  1. How can you divide a room and make it soundproof?

You can use wall panels and soundproof room dividers to divide a room and make it soundproof. They seamlessly fit into any style of decor. These panels will help to absorb the sound and improve the room’s acoustics.

  1. Is a soundproof room within a room more effective than a soundproof room?

Yes, a soundproof room within a room is more effective than a soundproof room because the sound has to travel a greater distance and pass through more obstructions. Thus, it results in a reduced sound level.