Why Soundproof Window Inserts?

Struggling with how to reduce noise from your windows? Have loud neighbors, construction, or traffic? We get it. Indow inserts are simple, easy-to-install window noise reduction solutions. Just press Indow inserts into your window frames – with no mounting bracket – and be amazed at the quiet you enjoy. You’ll sleep better, feel better and enjoy your space more.

Indow insert being installed into window with no tools - better than storm windows

How to Reduce Noise from a Window

By placing an Indow acrylic glazing insert, edged in our patented silicone compression tubing, into your window, you create a tight seal. You also create dead air space between the insert and your window, further insulating your window against noise. Anywhere air gets in, noise can too, which is why noise reducing windows work. To keep the noise outside, we ensure a precise, snug fit by custom making each acoustic window insert using our laser measuring system.

Want to know what it’s like living with the best soundproof window inserts? Scott Sidler is a national blogger who tested out our inserts in his studio:

The Benefits of Indow Window Inserts:

Every grade of Indow window inserts reduces outside noise by at least 50% when placed over an operable single-pane window. Our Acoustic Grade does an even better job, reducing noise by 70%.* (If you have double-pane windows, you must use Acoustic Grade for reducing noise.) They’re the best soundproof window inserts because they are easy to install or remove and not only block outside noise, but also prevent inside noise from bothering your neighbors.

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Customer Stories
indow window noise solution testimonial - acoustic window inserts
“After moving in, we realized just how busy the street was because it was so noisy we could not sleep at all. Neither could our infant. (The inserts) came on time and were installed so easily, I couldn’t believe it! The difference in sound was unbelievable.”

– Maggie F, Portland, Oregon

Data Driven Results
indow window noise chart - soundproof windows

*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 $27-$46/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.

Premium Grades

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

Our 4 options in premium 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.

If there’s a dealer near you, a dealer will laser measure your windows and also install the inserts. They will cover all costs in your estimate, which normally includes a measure and installation fee as well as your local sales tax.

Compare To Replacement Windows
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bedroom with window with indow inserts installed for soundproofing in san francisco


Awards & Recognition
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Grade Types

Each grade blocks drafts and reduces outside noises, but our premium grades have special features to make your existing windows work the way they’re designed to while providing additional benefits Click here to read all of our grade descriptions.


We custom make each insert to fit your window frames precisely. Once we have the laser measurements of your window frames, the inserts take two to three weeks to manufacture.

To get a free estimate, contact us today.