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Window Soundproofing Film: What It Is, Benefits, DIY Guide

Silent Home Hub Window Soundproofing Film

Soundproofing is a must for a lot of people in different neighborhoods.

Whether the neighbors have loud music, pets, or you just don’t want outside city traffic noise to disturb you, there’s a PERMANENT solution:

Window soundproofing film.

To find out how window soundproofing film works, its benefits, and how you can install them on your windows, read on!

Table of Contents

What Is a Window Soundproofing Film?

A window soundproofing film is a piece of film you SANDWICH between two layers. Essentially, it’s an interlayer film.

Aside from soundproofing windows efficiently, window soundproofing film can also block out UV radiation.

Window soundproofing film has a lamination core layer that’s designed for SOUND INSULATION to prevent sound transmission leaking through your windows.

When sandwiched in between two external window layers, it acts as a shield! It effectively reduces the number of sound waves coming into your home.

If you’re looking into soundproofing, you may know that the main culprits of sound are… YOU GUESSED IT!

  • Door hinges
  • and window leaks

One thing we’ve noticed, however, is that even if you tape down the edges of your windows, the glass can still vibrate!

So what’s the best solution?

Installing window soundproofing film for your home ELIMINATES sound sources altogether.

What are the benefits?

  • Your windows can be open, and they will still block sound.
  • With window films, you don’t JUST REDUCE outside noise. You can also reduce sound coming from inside your home.
  • If you play music constantly, like to do noisy projects, or have pets who often make barking noises, the sound-dampening properties of window films will do the job!
  • You and your neighbors no longer have to complain about each other because of all types of external noise!

How Window Soundproofing Film Works

We’ve explained the window film basics: the core layer dampens the sounds from the two external layers.

But what exactly is THAT core? How does it work?

Let’s take a science trip, shall we? (Don’t worry, even a 3rd-grader can understand it).

There’s a science behind its sound blocking. IT’S SIMPLE: polymer materials and transparent lamination make up the middle layer.

Window soundproofing film also has a high Sound Transmission Class (STC) rating.

When walls, windows, or soundproofing materials have a high STC rating, it’s more likely to become an effective sound-dampening barrier to all kinds of noises.

Noise-blocking film is great for window panes. Can you guess what material always has a low STC rating?

Yup. It’s glass.

You can go for DIY window films or get a professional to install them for you.

Who would’ve thought that installing transparent film can effectively block out noises from inside and outside your house and window?

Here’s a quick video to show you how they work:

How to Apply Window Soundproofing Films

For the BEST sound absorption, try to look for the professional-grade version.

Factor in your budget and how much you want to buy for your home and windows. If you can, call expert services to install the window films for you.

However, there are always cheaper, DIY solutions that can be just as effective in blocking outside noise from your window: Environmental PVC or plastic vinyl films.

These window films are good buys if you’re looking to move or if you’re renting out a place. You can install them easier on any window with cling attachment methods!

They’re reusable, so you can pick them up and install them again on a different window. If you don’t need any soundproofing, you can safely store these products away.

Why Choose Window Soundproofing Film?

There are alternatives to window soundproofing film, and we’ll get to a number of those products later. First, we have to outline why these window films are the best choice for you. Read on!

1. Block Sound From the Inside and Outside

Some soundproofing solutions only block out noise from either the outside or the inside.

If you don’t want the outside noise to come in or come out of your window, it’s an extra effort on your part. You have to double your qualifying purchases and spend TWICE the amount of time installing them.

Nobody wants that, right?!

That’s not the case with these window films. You don’t have to put on multiple layers of the same material. It does double the work with one product!

2. Block Noise Even When Your Windows Are Open

One thing we all hate as humanity is a HOT, STUFFY room. If you don’t have air-conditioning installed in your house, it’s best to let the natural breeze in with an open window.

There’s only one drawback: NOISE. As annoying as it is to keep windows in our room shut, we have to do so.

That’s no longer a problem with window soundproofing films.

It functions just as well, even with your windows open, absorbing any external noise it comes across. Let the wind and sunshine into your room with no noise attached!

3. Perfect for Homes, Condo Units, Meeting Rooms, and Music Studios

Noise-blocking window film is perfect for EVERY environment.

Yes. Every. Environment.

You may have loud children or pets living with you in your house or condominium. They may be noisy, or they may be agitated by too much noise coming into your house.

Offices and meeting rooms require “quiet enough” standards to be able to discuss and present essential matters.

As serious as a business can be, noise can be that interrupting participant.

And, of course, music studios.

Many studios already have soundproofing methods in place. Still, there are air gaps with acoustic panels, and weatherstripping tapes just can’t cover.

Play your best music in peace with window soundproofing films!

4. Stop Worrying About Replacing Acoustic Panels or Soundproofing Curtains

We can’t help it — accidents happen, even to our prized soundproofing products. You may think investing in panels, draft stoppers, window plugs, and other soundproofing methods are an investment.

Well, they are, but ONLY to an extent. You still have to replace them if anything happens every now and then.

Instead of saving on money, you’re actually SHELLING OUT MORE than you intended!

Unless your actual window breaks, this won’t be the case with window soundproofing films. That’s a big difference that’ll matter to you and your pocket.

5. Keep Your Room’s Design

We have to admit it.

Several soundproofing methods aren’t very aesthetically pleasing. Instead of keeping the interior and exterior design of your house, you’re suddenly BOGGED down by tape, window plugs, stoppers, blankets, rugs, and acoustic panels!

Sure, they may allow you some privacy, but it gets difficult to look into your room. You don’t see your personality or design…

You see a soundproofing void.

Window soundproofing films keep it low-key. They’re not as noticeable, and they definitely won’t impede upon any design you want in your house and window!

Some Considerations Before Choosing Window Sound-Proofing Film

1. Window Type

As much as we love window films, they don’t work for EVERY kind of window. You can only block out noise with window film IF you have layered windows.

If you don’t have the right window type, it’s okay. There are multiple alternatives we can get into below.

2. Number of Windows

Do you have the right window type for window soundproofing film?

Then you can enjoy the results! Now, you just have to identify the size and number of windows you’re going to install these films.

See how many windows need their own soundproofing film.

If the noise coming in and out of your window is tied to one room, get soundproofing just for that room. We mention this consideration as it ties into an important one: budget.

3. Budget

No one should go into a purchase blind! You want to weigh the cost-effectiveness of the sound-blocking film product you wish to avail.

You need to know how much you need so you know how much you can take out of your wallet.

As irritating as noise is, it’s not enough to completely clean out your savings over. We recommend identifying the most vulnerable windows and sticking with them.

However, if you have the budget to block out all sound waves completely, we’re not stopping you. Go and live a soundproof life!

4. DIY or Professional

This consideration also factors into your budget. You’re faced with two categories: professional-grade or cheaper DIY window film.

You also want to consider hiring people to install it for you if you’re unsure how to do it yourself. You don’t want to break any glass in the process!

  • Professional grade soundproofing film may be more expensive, but it also benefits you more in the long run.
  • However, if you find cheaper, DIY soundproofing film for your windows, we don’t see why you shouldn’t go for it!

Look for reviews online to know the best soundproofing film options. Get the best installation services while you’re at it!

5. Alternatives

You don’t have to resort to using a window soundproofing film immediately.

You can try out soundproofing alternatives FIRST. You may be surprised at how the most straightforward methods can eliminate noises!

We can’t guarantee each alternative’s effectiveness, but you may want to try them out before installing film for your windows. If all else fails, join the window film club!

The 6 Best Soundproofing Alternatives to Window Film

There are some temporary methods to consider if you’re still waiting to install that window soundproofing film. These alternatives also apply if you don’t have the budget (yet!) for window soundproofing film.

We present these soundproofing film alternatives as a way for you to save money AND reduce noise significantly.

After all, if you can soundproof with cheaper and more accessible materials, it’s worth a try!

Alternative #1: Curtains and Towels

Do you need soundproofing immediately but don’t have time to go shopping? It’s time to dig in the closet. Take out your heavy blackout curtains, blankets, and towels.

Then, here’s what you can do:

  • Hang them over your windows or doors.
  • Drape them over a partition if you have one! It also allows you more privacy.
  • Multiple, large towels, blankets, or curtains are best in layers.
  • You might also want to check for air gaps on your windows and doors so you know how to position them correctly.

REMEMBER: This alternative is meant to be a temporary soundproofing solution for your homes.

If you find that using curtains, blankets, or towels is enough, it may be time to invest in ACTUAL soundproofing curtains!

Some shops sell soundproof curtains, but some may not put their goods in that category themselves. The trick is to check the material.

Soundproofing curtains are usually made of heavy materials, like thermal curtains, velvet, suede, and even polyester.

The DENSER the product, the BETTER the sound quality results.

A plus for using soundproof curtains is the added privacy that comes with them, so that’s something to think about.

Alternative #2: Acoustic Panels and Window Plugs

You may be familiar with acoustic foam panels if you’ve been to a studio or a karaoke place before.

They dampen and absorb all kinds of noise. You can find foam, perforated wood, and fabric as the MOST COMMON materials for acoustic panels.

You can choose from wedge-ridge or egg-crate designs. Installation varies.

  • Some acoustic panels are adhesive and are easy to remove.
  • Meanwhile, a window plug sits on the windows’ interior. Glass windows let too much noise in, and a window plug can be a layer of protection.

It can either be permanent or removable. They’re commonly made of mass-loaded vinyl, which blocks out noises effectively.

Alternative #3: Weatherstripping Tape and Door Sweeps

These two noise blockers can summarize their function with three words: mind the gaps.

Air gaps in your door or window can let in a lot of noise. MORE THAN YOU THINK.

Weatherstripping tape is true to its name. Its original purpose is to protect doors and windows from extreme temperatures.

You usually find weatherstripping time around a window frame or door’s hinges and gaps. It’s a layer of protection that keeps dry and warm.

However, you can also use weatherstripping tape for other kinds of noise reduction!

  • It’s a cost-effective alternative with great soundproofing properties
  • It’s a dual-purpose tape. You can use weatherstripping tape as a shield to keep pests out!

The same goes for draft stoppers and door sweeps. It blocks out noise as it seals the gap in between your door and your threshold. However, it also keeps dust, insects, and cold air out.

Alternative #4: Rugs

Like the curtains, towels, and blankets soundproofing method, you can reduce the noise coming in and out of your house by diving into your closet.

Take out all types of heavy rugs and carpets and place them on the floor. You should keep them near door gaps.

It won’t be much soundproofing for your glass windows, but it can still reduce noise.

If you live on the ground floor, rugs won’t give extra protection for any downstairs neighbors. But hey, their soundproofing properties will still give a small boost to keep noise to a minimum!

Alternative #5: Add More Furniture

Furniture can act as an efficient soundproofing method! You never know — maybe the room’s design just makes more transmission possible.

If you don’t have the budget to add new furniture or your home is too cramped to search for more to add, you can rearrange furniture instead.

We recommend putting all types of furniture near shared walls and windows. Putting furniture nearby some doors can impede walking from one place to another.

Just like curtains, blankets, and rugs, the material is a significant factor with furniture. Upholstered furniture has the MOST soundproofing properties:

  • Plush sofas and chairs can block all types of noises! Go for suede, corduroy, and similar fabrics. Add throw pillows into the mix.
  • With the proper furniture categories, you may even end up with a more stylish room! Mix and match pillows, rugs, thick curtains, and plush sofas and chairs.
  • You can also look into hardwood shelves to put against the walls. You get some space for your books and souvenirs while keeping noise away.

Alternative #6: Layer Your Walls — Or Replace Them

Your glass window may be too thin. It may be the active participant in letting all that noise in! Instead of adding soundproofing products, you can eliminate noises by ADDING ANOTHER LAYER OF GLASS. At least two layers should work well enough!

Or, you can replace your glass windows entirely. You can put in thicker glass windows, laminated glass windows, or soundproof glass windows so all noises won’t get into your home.


plant on a window ledge

Window soundproofing film is an ideal product to reduce all types of noises coming in and out of your home.

Window film is efficient, reusable, and much more convenient:

  • You can let the air in with the window frame propped open, and the film will still BLOCK out noise
  • You can reduce noise coming from your end and block out ones coming from other people outside, may it be in the form of traffic or music
  • Unlike other alternatives, window film doesn’t have to be replaced as quickly
  • Window film also won’t interfere with your office, studio, or house design!

If you need peace and quiet immediately, you can choose to install window film on your window frame.

Are you going to make the purchase? We hope this guide helped you out with your soundproofing search!


January 5, 2022 – updated article title, updated featured image

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About the Author


Andrea has always been bombarded by the hustle and bustle outside her home. Living in the city doesn’t get any quieter. The never ending noise from construction, traffic, and dogs barking on the streets day in and day out drove Andrea to a breaking point.

For 3 years, Andrea committed herself to studying DIY hacks, performing soundproofing experiments, and installing noise-free solutions. Now, she lives a quiet life free of the stress from noisy environments.

She hopes to share this knowledge so that others don’t have to endure the noise reigning in their ears and live a peaceful, stress-free life.