7 ways to Soundproof a Room Without a Door

It may appear strange to have a room without a door, but it can be possible. Perhaps the room is still undergoing renovations, in which case it is currently without a door, or maybe it was originally intended to serve as an open-plan space.

If installing an actual door on the doorway is not a possibility, it can become a major issue because it allows outside noise, heat, and cold to enter. Fortunately, there are ways to make a soundproof room without a door so you can still enjoy some privacy.

Keep in mind that in the whole article we are not talking about completely isolating the room, as it’s almost impossible without installing a solid door. We’ll try to see methods that will help in reducing the noise entering the room and also remove reverberations. So, don’t take the word “soundproof” literally.

Fortunately, you can have a soundproof room without a door with some inexpensive, DIY methods. Use acoustic dividers, door plugs, soundproof curtains, blankets, or household items to make a temporary door to prevent noise coming from an entrance without a door.

In this article, we will discuss some of the best methods for soundproofing a room without a door. We will also go through some of the science behind soundproofing to assist you to understand the solutions.

The Science of Soundproofing

When trying to soundproof a room without a door, you must be aware of the four key soundproofing concepts. By being aware of this, you will be better able to determine what needs to be done and what materials are required.

When it comes to preventing sound from entering a room through an open doorway, your options are relatively limited. This is due to the fact that open door spaces are essentially blank canvases. Unlike with doors, you have to soundproof the area from scratch.

Four key soundproofing concepts must be applied in the right proportion for successfully soundproofing a room.

  1. Mass
  2. Absorption
  3. Decoupling
  4. Damping

However, decoupling is irrelevant to our present project since open spaces cannot be decoupled. Thus, we will discuss the main three principles in this article that are relevant to our topic.

  1. Mass

Given that mass is the one thing the doorway already lacks, it is likely to be the most helpful principle for soundproofing a doorway. Lighter things have a greater potential for vibration when a sound wave strikes them because they have less structural support. Therefore, adding mass makes anything heavier, which reduces its ability to vibrate as much. Following that, sound waves either fade away or reflect off the surface.

Instead of managing sound, mass is used in soundproofing to block it.

You can prevent a significant amount of sound from entering by starting with a base material that is mass-rich. Then, to increase its effectiveness, you combine it with dampening and absorbing materials.

  1. Absorption

Absorption is the process of causing a sound wave to lose or exhaust all of its energy. It’s known as energy dissipation.

When sound waves collide with a surface, such as a wall, a portion of the wave is reflected, a portion is transmitted, and a portion is absorbed. Using substances with open-celled structures will enhance the amount that is absorbed. 

When sound waves penetrate the material, the vibrational energy causes the material’s fibres to bend. The sound waves are changed into heat energy through this method.

But sound absorption reduces resonance and echo rather than preventing them. This not only helps with acoustic clarity but also reduces the number of sound waves that bounce around a room.

You only need to care about sound absorption if you want to improve the sound quality inside the room oor remove echo.

  1. Damping

Reducing the number of vibrations on or through a surface is known as damping. Damping is frequently confused with absorption, although the two are not the same.

Since sound waves are vibrations, preventing a surface from vibrating lowers the ability of sound to pass through it.

Damping, however, cannot be utilised by itself. It works best when used in addition to other soundproofing methods.

7 ways To Soundproof a Room without Door

Now, let’s dive into the main part of the article and start exploring different ways to soundproof room without door.

1. Hang Acoustic Curtains

A cheap yet extremely effective solution for reducing the noise coming from an open doorway is to use acoustic curtains.

The benefit of curtains is that you can draw them back when not in use. These curtains have an additional layer of mass in the form of fabric, vinyl, etc. These materials all have excellent STC ratings, making them ideal for reducing sound transmission.


All that is required is the installation of the curtain rail over the doorframe. These curtains may lessen noise from the opposite side but will not entirely block it unless you use double or triple layers.

Acoustic Curtains are completely different from regular curtain so don’t end up purchasing regular curtains. These soundproof/acoustic curtains are heavy and contain multiple layers which helps in blocking sound upto some extent.

You can purchase good quality acoustic curtains from the website of Amazon. I recommend purchasing Nicetown Soundproof Curtains as you’ll get tons of customization options there.

2. Acoustic Room Dividers

The best option for soundproofing a space is an acoustic room divider. They add mass and absorb energy, which makes them very effective in reducing airborne noise.

A high quality room divider can help to catch as many traveling waves as possible, the core is filled with mass, then topped by a layer of the sound dampener, and finally finished with an absorptive substance.

They reduce noise, and you can use one to fill up as much space as possible by placing it in the door frame. Fill in any spaces with soft material between the divider and the doorway, like pillows or pillowcases that are tightly rolled, heavy curtains or rugs, cushions, etc.

room partition
room partition

Acoustic room partitions minimise room reverberation and muffle outside noise, however, they do not completely prevent it.

You can use these room dividers to create a partition with in a room, it would help in creating a less noise space within your room which has no door.

3. Soundproof Blankets

When your entryway is open, some heavy-moving blankets can be quite useful at reducing noise transmission.

Pick the thickest and heaviest blanket possible to hang on the doorway. The blankets will be better able to block off sound waves moving through the air if they are thicker and denser. These blankets may also be stacked for better results.

In addition to soundproofing, the room will also be protected from heat and cold by using blankets. If you do not have one, you can purchase from Amazon.

4. Rearrange Furniture

Try using the furniture you already have at home to create a temporary barrier if you need to stop sound immediately from entering through the open doorway.

There isn’t exactly a specific way to arrange furniture, but the more mass you place in the doorway, the better it will be at absorbing sound.

You can utilise pillows, blankets, cushions, mattresses, book shelves and anything else that is hard and thick to block incoming sound waves. Although this is not the best option, it will work if you have nothing available.

5. Soundproof Booth

As the name suggests, it is booth or you can say a box that is completely soundproof and isolated from external environment. You can place this booth inside the room and use it for recording music, videos or anything that needs no noise.

Soundproof booth is an expensive purchase and it’s used for professional purposes only. You can check in detail how it works here.

soundproof booth

6. Soundproof Windows

Doors and windows are two major components of a room that let noise enter the room. When you don’t have a door in room, you job of isolating a room becomes extremely difficult. But, still you gotta see what you have in hand and what improvements can you make.

Soundproofing windows become a top priority in such case. It’s simple science, you just need to block all the entry points of sound in your room.

soundproof window inserts
soundproof window inserts

To soundproof a window you can use window inserts, hang soundproof curtains or blankets, replace the current windows with soundproof windows or change the glass of your windows with soundproof glass.

Please check: How to Soundproof a Window?

7. Soundproof Walls

Walls also let the noise travel from one room to the adjacent one, if that’s one of the problems you’re facing then you should definitely make changes to your wall.

Bonus Tips To Soundproof a Room

  • Organize The Placement Of Your Furnishings

Try to use all the soft furnishings you can get your hands on strategically if none of the previous suggestions are an option or even if they are. Soft furniture, like curtains and blankets, absorb and dampen sound instead of blocking it. By placing your furniture strategically throughout the space, you can manage it.

You may get an idea of the impact this will make by comparing how a room sounds when it’s empty versus when it’s fully furnished.

  • Purchase A White Noise Machine

Making your own noise is one of the best methods for dealing with unwanted noise. You can hide annoying outside noises by playing soothing background music or white noise. It may also assist you in relaxing and falling asleep faster.

Therefore, it can be worthwhile for you to spend money on a good white noise machine. A range of affordable and high-quality white noise machines are available on Amazon.

To Wrap It Up

In every soundproofing project, doorways and doors always require a little bit more care than the rest of the house. The simplest and least expensive method for soundproofing room without a door is to hang acoustic curtains or blankets over the entrance. They are also simple to remove. 

You can use some of the fantastic options that are mentioned and described above to stop outside noise from entering your room. You can use more than one method to achieve the level of soundproofing you desire.


  1. How to soundproof an open room?

You can soundproof an open room by adding a lot of soft furnishings like rugs, sofas, carpets, etc., putting up acoustic panels, sealing windows, hanging acoustic curtains and so on.

  1. Which materials absorb sound?

Fabrics that are known for absorbing sound include foam, wool, velvet, acoustic fabric, burlap, and mass-loaded vinyl.