How To Soundproof A Closet

by Matthew David | Updated: 09/14/2023

How To Soundproof A Closet

You know when you’re trying to have a private phone call or squeeze in some guitar practice but everyone in the house can hear every word and chord? Or when you’re trying to sleep but your roommate’s late night chatter keeps you wide awake? Soundproofing your closet is the perfect solution!

In this detailed guide, you’ll learn everything you need to transform your regular old closet into a soundproof sanctuary. Get ready to gain more privacy, reduce noise, and enhance your audio recordings as we dive into the wonderful world of closet soundproofing together!

Why Should You Soundproof Your Closet?

Before we get into the nitty gritty DIY steps, let’s first go over the main reasons why soundproofing your closet is such a great idea:

Amp Up the Privacy

If you share your room or home with other people, soundproofing your closet is a great way to gain more privacy. Adding insulation and specialized acoustic materials turns your closet into a soundproof barrier that contains noise. This means you can have confidential phone calls or jam on your musical instruments without disturbing housemates. Soundproofing gives you a secluded space to retreat to when you need some “me time”.

Drown Out the Noise

Whether it’s early morning traffic outside your window or noisy neighbors upstairs, unwanted sounds can disrupt your day. By soundproofing your closet, you’ll significantly reduce the amount of external noise that enters the space. Just step inside your soundproof closet, close the door, and enjoy blissful quiet!

Catch More Zzz’s

Excess noise at nighttime can lead to lost sleep and next-day drowsiness. But a soundproof closet allows you to create a peaceful oasis where you can rest undisturbed. Feel free to turn in early while your roommates stay up late talking or watching TV—you’ll sleep like a baby!

Enhance Audio Quality

For music lovers and podcast fans alike, a soundproof space provides clearer, higher quality sound. By blocking out any competing noises, you’ll pick up subtle audio details that normally get drowned out. Make your favorite tunes really shine by listening in your soundproof sanctuary.

Build a Home Studio

For musicians, singers, and podcasters, a soundproof closet can transform into a mini home recording studio. With proper acoustic treatment, your closet will offer a noise-free environment for capturing studio-quality tracks. Get ready to produce your best vocals or instrumentals yet!

De-stress Your Space

Noise pollution, from traffic to construction sounds, can induce stress and anxiety. A soundproof closet provides a chill zone where you can escape from the auditory assault of the outside world. Light some candles, put on calming music, and let your mind decompress.

Prepping Your Soundproof Closet Project

Before breaking out the acoustic panels and soundproofing materials, it’s important to make sure your closet is ready for its soundproof makeover. Follow these preparation steps:

Detect Noise Sources

Walk around your home and take notes on what noises are most audible in your closet. Is it footsteps upstairs, kitchen sounds, outside traffic? Identifying noise sources will help you focus your soundproofing efforts.

Measure Your Closet

Grab a tape measure and jot down the length, width, and height of your closet walls, door, ceiling, and floor area. This will ensure you purchase enough materials to cover the full space.

Set Your Budget

Soundproofing supplies like MLV, bass traps, and acoustic panels can add up. Decide how much you are able to invest in your soundproof closet project. Having a budget will help guide your material purchases.

Define Your Goals

Consider what you want to achieve from a soundproof closet. Do you need to block loud music from next door? Produce podcasts? Sleep better? Match your soundproofing techniques to your unique goals.

Soundproofing Materials to Stock Up On

To effectively soundproof your closet, you’ll need the right supplies. Here are some of the top soundproofing materials and how to use them:

Acoustic Panels

Acoustic panels are great for absorbing noise and preventing sound from passing through walls and ceilings. Made of sound-absorbing materials like fiberglass, acoustic panels come in a variety of sizes, shapes and colors to suit your space.

For your closet, arrange acoustic panels strategically on the walls, using adhesive to affix them. About 20-30% wall coverage is ideal. Acoustic panels dampen echoes and reduce reverberation.

Foam Panels

Foam panels, typically made from dense polyurethane or polystyrene foam, help block unwanted noises by trapping air inside the foam’s porous structure. They effectively absorb lower frequency sounds.

Foam panels come in different thicknesses—choose thicker ones rated for soundproofing. Self-adhesive backing makes installing foam panels on your closet walls quick and easy.

Bass Traps

Placing bass traps in the corners of your closet will help absorb pesky low frequency sounds, like thumping bass. Bass traps are usually triangular shaped acoustic foam or fiberglass panels specifically designed to trap bass.

For maximum bass absorption in your closet, install 2-3 bass traps on wall-wall and wall-ceiling corners. You’ll notice cleaner, tighter bass response.

Mass Loaded Vinyl

Mass loaded vinyl (MLV) is a heavyweight, dense rubber material excellent at blocking sound. With its noise-blocking mass, MLV presents an impermeable barrier that stops exterior noise from entering your closet sanctuary.

Use spray adhesive to mount MLV sheets across your closet walls. For extra soundproofing, add another layer using Green Glue between sheets.

Soundproof Blankets

Large soundproof blankets made of noise-absorbing fiberglass or acoustic foam offer an easy way to enhance your closet soundproofing. Hang them across walls, drape them over doors, or layer them across ceilings to significantly dampen noise.

Overlap multiple blankets for full coverage. Use Command Strips or adhesive to securely install them, eliminating gaps where sound can sneak through.

Sealing Up Your Closet Door

The closet door is one of the main culprits for noise leakage, so special attention should be paid to soundproofing it. Follow this advice:

Weather Stripping

Applying weather stripping tape seals up any cracks or gaps around your door perimeter that allow sound to travel through. Look for thick foam weather stripping that compresses when the door closes.

For a tight seal, apply weather stripping around the door’s top, bottom and side edges so it sits flush against the frame. Maintain with periodic replacement as strips wear out.

Door Sweep

A door sweep made of rubber or dense vinyl attaches along the bottom of your door to seal the gap between the door and floor threshold. This blocks sound from escaping under the door and prevents exterior sounds from entering through the crack.

Look for a sweep in an adjustable width to custom fit your door’s underside. Sweep bristles should lightly brush the floor. Check periodically for damage.

Soundproof Door Upgrade

If ambient sound is still leaking through an old hollow core door, consider swapping it out for a solid core wood door or a metal door. Their dense construction better obstructs noise compared to flimsier hollow doors.

If a new door isn’t in the budget, adding MLV sheets helps reinforce an existing door. You can also install foam interior door panels for increased noise absorption.

Sealing Holes, Cracks and Gaps

Even tiny cracks and openings in your closet walls, floors, and ceilings can degrade soundproofing effectiveness. Here are some easy sealing solutions:

Conduct a meticulous inspection and seal any overlooked openings that could allow sound transmission from room to closet.

Soundproofing Floors, Walls and Ceilings

To fully contain sound, implement these techniques throughout your closet interior:


Adding carpet and padding absorbs noise and impact sound from walking across the closet floor. Opt for a plush, heavy carpet material like 80% wool or polyester blends which perform well acoustically.

Use thicker 1/2″ – 1″ padding underneath for extra sound dampening. Make sure carpet edges are tacked down tightly with no gaps to the walls.

Decouple the Walls

Installing a double wall with an air gap in between “decouples” the existing wall from the new interior wall. This significantly reduces sound transfer from adjacent rooms by eliminating vibration transmission.

Construct a basic wood frame filled with sound-absorbing insulation like fiberglass or mineral wool. Add mass with double drywall layers on each wall side.

Insulate Ceiling and Walls

Adding insulation like fiberglass batts or blown-in cellulose to your closet’s ceiling and interior wall cavities adds mass and absorption. This diminishes noise infiltrating from upstairs rooms or next door.

If renovating, use soundproofing insulation like Green Glue Noiseproofing Compound when installing drywall. Apply generously between panels.

Extra Tips for Building a Closet Studio

If your goal is to convert your soundproof closet into a home recording studio, keep these additional tips in mind:

Add Electrical Outlets

Recording gear and electronics require ample outlets. Hire an electrician to install new grounded circuits so you can power microphones, computers, lights, and amps from your closet studio. Make outlets accessible but out of sight.

Install a Reflection Filter

A reflection filter placed behind vocals or instruments prevents sound from bouncing off walls and muddying your recording. The curved edge directs clear, isolated sound into your microphone. Portable folding filters work well in cozy closets.

Re-Insulate Walls

For maximum acoustic isolation, remove existing drywall to add thick soundproofing insulation like Roxul Safe’n’Sound throughout wall cavities. Follow with double drywall layers on each side to build a soundproof wall sandwich.

Use Isolation Mounts

Installing studio monitors and speakers on isolation pads or wall mounts prevents vibrations transferring through the structure, keeping your recordings clean. Isolate voices and instruments too using foam mounts.

Maintaining Your Soundproof Closet

Over time, maintenance is required to preserve optimal noise blocking in your soundproof space:

That’s A Wrap!

Phew, we covered a lot of ground on how to transform your run-of-the-mill closet into a soundproof sanctuary! Here are the key takeaways:

With the right materials and a methodical approach, you can easily build a soundproof closet that allows you to retreat into blissful silence whenever you desire. No more eavesdropping or noisy distractions encroaching on your chill zone. Just refreshing peace and quiet.