Acoustic Grade Window Inserts
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!
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.
ACOUSTIC INDOW INSERT + SINGLE-PANE
REDUCE NOISE UP TO 70% (18.9 DBA REDUCTION)
ACOUSTIC INDOW INSERT + DOUBLE-PANE
REDUCE NOISE UP TO 50% (10.2 DBA REDUCTION)
Indow's custom Acoustic Window inserts are:
- Nominal ¼” thick acrylic glazing, double the thickness of Standard Grade.
- Edged in Indow’s patented silicone compression tubing.
- Made in three different colors - warm white, brown and black.
- Available in custom shapes like arches, rounds and eyebrows.
Window inserts for soundproofing are versatile and can be used in a variety of settings such as bedrooms, nurseries, home recording studios, workout/dance/art studios and offices. Establishments such as hotels, churches, yoga studios, government buildings and museums as well as rental property managers have all used Indow inserts to reduce outside noise. To better understand how sound enters a space, check out our home soundproofing guide.
Testimonials About Indow Window Inserts for Sound Reduction
Instead of relying on our word, read what our customers have to say about how our window inserts improved their lifestyle. For example, our client Maggie installed Acoustic Grade 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 home or business.
How Indow's Window Noise Reduction Performs:
- Reduces noise by 18.9 dBA (a more than 70% reduction when placed over single-pane windows.)
- Reduces noise by 10-12 dBA (a more than 50% reduction when placed over double-pane windows.)
- STC (Sound Transmission Class) Ratings denote how much noise is blocked by walls, windows and other surfaces. Independent studies have shown Acoustic Grade inserts placed over a double-pane windows yield a STC rating of 42-45.
Noise reduction compared to a single-pane window
50-70%
Indow
25%
Replacement 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
Standard Grade
$31/sf or just $372 for an average window
Our workhorse interior storm window insert blocks drafts and reduces outside noise.
Performance Grade
$40/sf or just $480 for an average window
Our 4 options in performance grade inserts provide superior protection against noise and light.
Commercial Grade
$44/sf or just $588 for an average window
Industrial strength inserts 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 & shipping charges not included. Shipping charges vary by region and order size – talk to a Fit Specialist to get our best pricing.
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You're one step closer to creating more comfort & quiet in your home.
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Customer Reviews
4.49 Average 1491 Reviews
Juli E
We are thrilled with our Indow window inserts! I'd been on the lookout for a more permanent solution to leaky windows in our third floor living space. I discovered Indow on social media but since then have learned of friends who'd had Indow recommended to them by their rennovation contractor. The entire process went smoothly with friendly reps at hand to talk through questions during measuring, etc. They fit perfectly and help us to maintain the beautiful design of the windows on our 100 year old home! Highly recommend!!
Jen F
Worth the money!
Elizabeth H
For townhouse living, this solved my problem with noise from my neighbor's with my kitchen window. A considerable decrease of noise indeed! Measurements were a bit frustrating so I recommend using a laser measurement device and following directions to use a string for the diagonal. They look great and were easy to push into place. I highly recommend as an alternative to buying a new window.
Anonymous
Easy to install, and instantly stopped drafts and dampened outside noises very effectively!
Robert C
The process could've been smoother with the sending of the measuring kit. There was a delay with weather in Oregon but then it felt like my kit was still delayed due to other reasons. Most new homes (like mine) have textured paint and it can also be inside your window frames. I measured everything out but I still have little tiny gaps due to the texturing. Not indows problem but just be aware you made need to sand or fill in those gaps yourself to get a perfect seal. I did the acoustic grade inserts and they have reduced some noise but they will not completely block or significantly reduce road noise. This is most apparent with deep or lower frequencies like truck exhausts or modified street racing cars that are quite popular these days. Taking the inserts out to open your windows isn't an easy task. The little metal hook they provide needs to be either bigger or you can attach something to it as a way to leverage yourself. Overall the process was average. I think they're definitely a good option for weatherproofing and some sound reduction depending on the type of windows you have. I would purchase again.
Shelley C
The process for ordering and installing the Indow Widnow inserts was so easy. They sent the measuring information and it had great instructions. The inserts were delivered by UPS was crushed on one corner, but the company had packed them well, so there was no damage. We installed them the same day. It works best if you have two people completing the installation. We felt the results immediately and are glad we spent the money to make our home just a little more efficient.
Barry B
The insert fits like a glove and insulates the window! No more frost and condensation on the interior of the window! Thank you for an easy, effective and attractive fix!
Susan A
The support during the entire process was wonderful, thank you so much for the extra quiet space!
Volodymyr R
Very good good quality. Overall very satisfied with this product and service. Thanks
Jane H
Our home was built in 1913 and has beautiful old wavy glass single-paned windows. I’m so glad we were told about Indows and didn’t have to replace the original windows. We live in Canada but had no difficulty placing the order and were very impressed by how accurately the company met its deadlines, including cross border delivery. The Indows inserts blend in perfectly with our home and the existing window frames. You don’t see them unless you’re actually looking for them. But what we did notice was how much warmer the rooms feel the minute the inserts were installed! I can’t speak to any heating bill savings because they just went in this week, but our home feels much, much cozier. Our contractor who took all the measurements and installed the Indows says: “Excellent instructional videos: clear and informative. Very impressed with the design and the product. Overall, the ease of installation is quite impressive. Working with all the staff at the company was great – everyone was very helpful.” I’m already recommending this company to any of my friends who live in drafty older homes and want to reduce their heating/cooling bills and do some good for the environment.
Anonymous
Don't be afraid of buying an older home with single pane windows. This company has you covered. Their inserts are super high quality and fit well thanks to the laser measuring kit they send. Highly recommended!
Katie M
We purchased three Indows to reduce drafts and noise in our bedroom, which faces the street. The improvement was immediate. Our house was built in 1958 and although we have exterior storm windows we didn't want to replace the windows outright due to cost and architectural consistency. These were an excellent solution.
Matthew L
Indow inserts were easy to measure, order and install. They've provided great insulation for old single-pane and stained glass windows in an antique home. We can significantly feel how much better the home holds heat.
Ellis W
I ordered two Indow inserts for my home. They are doing a great job, entirely happy with them and the ordering process.
Elizabeth W
I can't say enough good things about this product and company. Our house is 101 years old and the sidelites next to our front door are single pane ancient wavy glass which means when it gets very cold (Chicago temps) we can have an inch of frost covering the INSIDE of our windows. I was desperately searching for a solution so our front vestibule was not so cold and a friend recommended Indow. The process could not have been simpler and the temperature difference it has made is off the charts.
Customize Your Insert
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.
All our acrylic interior storm windows are durable, lightweight and made to blend seamlessly with the surrounding frame. Don't buy new windows. Make the ones you have just right with our precision measuring software, which will ensure a tight fit for your new window inserts. Just choose the grade you need and get started measuring. We're here to help at every step.