Ready to soundproof your space? Our soundproof window inserts use insulation to block out traffic noise, barking dogs, noisy neighbors, and more. Learn the difference between sound reduction and sound absorption to determine the best way to make your home more quiet. Then see how Indow sound deadening inserts can help you create a quiet home.

simple soundproofing windows tricks by blocking noise from entering

Sound Reduction


Sound Absorption


Types of Window Soundproofing

Sound Reduction — Decreasing noise from its original level by blocking it. Sound-reducing products prevent noise from entering a space.

Sound Absorption — Decreasing noise from its original level by stopping its movement within a space. Sound-absorbing products stop noise from bouncing off surfaces.

How to Increase Sound Reduction How to Increase Sound Absorption
Seal gaps in window (caulk, weatherstrips) Add furniture
Sound-dampening curtains Hang acoustic panels
Install sound-reducing blinds Lay plush rugs
Install interior storm window inserts Purchase plants

Now that you know the difference, decide whether you need sound reducing or sound absorbing products.
Don’t know which product you need? Noise generated outside calls for sound reducing products to stop noise from traveling through windows, ceilings, doors, and walls. Noise generated inside requires sound absorption products to reduce echo.

If outside noise is your issue, Indow is here for you. Noise travels via vibrations in the air and insulating, air sealing inserts block that noise from entering your space. Can’t decide? You may need both.

Indow products can be used to block outside noise from entering while sound absorbing materials inside can minimize reverberation. Keep in mind, sound reducing products, like inserts, will provide a more noticeable difference in noise than sound absorbing products.

Learn more about the two types of soundproofing and soundproofing materials here.

Diagram of window made more soundproof against barking dog by adding an Acoustic Grade Indow insert

How to Soundproof a Window with Inserts

Installing window inserts is an easy and effective way of soundproofing windows. Indow Acoustic Grade window inserts can reduce and cancel noise – up to 70% of outside noise from its original level when placed over single-pane windows and up to 50% from its original level when coming through double-pane windows. In an office or home, soundproofing windows is easy with our inserts that press into your existing window frame. Indow uses its patented silicone compression tube to keep window inserts in place instead of hardware like tracking. But how much does it cost to soundproof windows?

Woman installing indow insert: air sealing with inserts is the best window soundproofing method.

Indow inserts are edged with our patented silicone compression tube to create a 99% airtight seal for your soundproof window. Getting an exact fit is essential in soundproofing a window, since gaps and spaces allow sound to seep inside. This precise fit also creates a more comfortable, energy efficient space while the low profile practically disappears into your window frame. Our custom-made inserts offer simple soundproofing for any window shape.

Watch this 2 minute demo by window expert, The Craftsman Blog, to see how they 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.


Sound Absorbing Treatments

Despite your best room soundproofing efforts, the sound that does penetrate can be absorbed once it’s in the room to minimize echoes. It’s best to avoid minimalist style of exposed brick and wood floors. Consider hanging Acoustic panels. Also, plush rugs with sound dampening rug pads, wall hangings, upholstered furniture and plants will help absorb sound.


Indow Inserts Are Featured In:

logos of newspapers and magazines that have featured Indow window inserts

“Indow significantly improves insulation and leakage, as well as noise reduction.”

-RD Gentzler, Architect
House Beautiful, How to Soundproof Your Windows Without Actually Renovating


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