Window Soundproofing Made Easy

Reduce outside noise from trains, traffic, or your neighbor’s barking dog with acoustic window inserts. Like other Indow grades, Acoustic Grade inserts simply press into existing window frames. These indoor storm windows seal out drafts and save energy, with the added bonus of blocking up to 70% of outside noise.*

With no hardware required, Indow inserts don’t damage the existing window. This makes them a great choice for historic windows, new homes, and rental homes for noise reduction without window replacement. Indow inserts make noise canceling easy without the hassle and expense of installing soundproof windows!

 
Person installing Indow Acoustic Grade inserts to soundproof their home from outside noise
 

How Do Acoustic Window Inserts Work?

Acoustic Grade inserts are an extra layer against sound vibrations – they are sound deadening storm windows for the interior. The deeper the window frame, the bigger the air pocket between insert and window—the better the performance. All window measurements are entered through our Measure by Indow  software, which instantly verifies measurements for a precise fit. Our sound blocking window inserts create a tight seal that block noise entering through cracks.

 
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Diagram of Acoustic window inserts with single-pane & double-pane windows. Reduce noise by 50-70%.
 

Indow Custom Acoustic Window Inserts Are:

  • Double the thickness of Standard Grade inserts.
  • Edged in our patented silicone compression tube.
  • Made in three different colors - warm white, brown, and black.
  • Available in custom shapes like arches, rounds, and eyebrows.
 

Window inserts for soundproofing are used in a variety of settings such as bedrooms, nurseries, home recording studios, art studios, and offices. Hotels, churches, yoga studios, government buildings, museums and rental property managers have all used Indow inserts to reduce noise. To better understand how sound enters a space, check out our home soundproofing guide.

 
 

Customer Stories On Acoustic Window Inserts for Sound Reduction

Read what our customers have to say about how Indow inserts improved their standard of living. Maggie installed Acoustic Grade inserts in several rooms to block loud traffic noise. The reduction was dramatic, and she loved how she couldn’t even see the inserts.

“It’s made a huge difference,” said Maggie. “Unless you know they’re there, you don’t know they’re there.” Read more case studies like Maggie’s on how we help customers find comfort, quiet and savings in their spaces.

 

Indow Window Insert Noise Reduction Performance:

  • Reduces noise by 18.9 dBA (more than 70% reduction with single-pane windows.)
  • Reduces noise by 10-12 dBA (more than 50% reduction with double-pane windows.)
  • STC (Sound Transmission Class) Ratings tell how much noise is blocked by walls, windows and other surfaces. Independent studies have shown Acoustic Grade inserts placed over double-pane windows have a STC rating of 42-45.
 
indow window acoustic grade chart
 
 

*We want to ensure our inserts help solve your noise problem. Overall noise reduction depends on the amount of noise coming through your walls, ceilings, floors, doors, and existing windows. Noise reduction will be less when placed over double-pane windows. Read our full Noise Reduction Sheet to learn more.

 
What Do They Cost?
 

Consider the cost and disruption of replacing your windows. A vinyl window averages $66-$87/sf. A wood window averages $71-$109/sf. With Indow inserts averaging between $31-$44/sf MSRP, your window project can cost a fraction of other options.

Standard Grade

indow windows cost for standard grade window insert is $27 per square foot
 

Our workhorse interior storm window insert blocks drafts and reduces outside noise.

Performance Grades

indow windows cost for premium grade window insert is $36 per square foot
 

Our 4 options in performance grade inserts provide superior protection against noise and light.

Commercial Grade

indow windows cost for commercial grade window insert is $41 per square foot
 

Industrial strength insert with a scratch-resistant coating can be cleaned with common products.

When you measure your windows, you’ll have help at every step. First, we have a library of video and written tutorials available. Second, our amazing team is always ready to take your call if you need assistance. Third, our proprietary measurement software will automatically check your measurements as you enter them to ensure a tight, snug fit for your customer window inset.

*Sales tax may apply

 
Compare To Replacement Windows
 

Block noise to enjoy quiet and a good night’s sleep with our custom-made, sound reducing window inserts. Get a free estimate by filling out our form below.

 
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bedroom with window with indow inserts installed for soundproofing in san francisco

 


 
 

We value safety and privacy. We will never share, sell, or rent your data to third parties not directly related to your purchase or consideration of our products. Read our full policy here.

 
 

Customer Reviews

 
 
Indow window insert compression tube color samples

Customize Your Insert

Choose which grade of custom window insert works for you. All grades block drafts and noise, but premium grades offer special features for specific situations. See all grade types.

See All Grade Types

Each insert has a tube that edges the clear acrylic. This tubing should blend into your window frame. It comes in three colors: white, brown, and black.

 
 
Indow window insert compression tube color samples
 

Customize Your Insert

 

Choose which grade of custom window insert works for you. All grades block drafts and noise, but premium grades offer special features for specific situations. See all grade types.

See All Grade Types

Each insert has a tube that edges the clear acrylic. This tubing should blend into your window frame. It comes in three colors: white, brown, and black. For a limited time we are offering a fourth color: Natural Wood! (Not available in Acoustic Grade)