noscript

Soundproof Your Home with Window Inserts

Street Noise Disrupting Your Life?

You can have peace and quiet even when it’s loud outside. Reinforce your windows against noise penetration – without having to replace them. Award winning Indow window inserts just press inside your window frames to block 50 to 70% of the noise that's bothering you.*

Woman installing an Indow insert inside of a window

Indow Creates A Sanctuary From Noise

We care about creating shelters from sound in homes because we know what chronic exposure to noise can lead to: stress, heart disease, poor cognitive performance. Providing a solution that works with existing windows puts less material in landfills – that's part of our sustainable mission.

How Our Window Inserts Work

Indow window inserts use our patented Compression Tube to press inside your window frame and seal out noise. Our Standard Grade inserts block sound by 50% and our Acoustic Grade inserts block more than 70% when placed over operable single-pane windows. When placed over operable double-panes, Acoustic Grade inserts reduce noise by up to 12 dBA – that's more than a 50% reduction in noise and an STC rating of 42 to 45.

ACOUSTIC INDOW INSERT + SINGLE-PANE

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

REDUCE NOISE UP TO 70% (18.9 DBA REDUCTION)

ACOUSTIC INDOW INSERT + DOUBLE-PANE

Diagram of Acoustic window inserts with double-pane windows. Reduce noise by up to 50%.

REDUCE NOISE UP TO 50% (10.2 DBA REDUCTION)

Window Expert Weighs in on Indow Inserts

Scott Sidler has been working with windows for years. He owns his own historic restoration company and runs the national The Craftsman Blog, which he calls his “laboratory, classroom, playground”.

He jumped at the chance to play with our Acoustic Grade window inserts in his shop:

How To Soundproof Windows

Blogger and DIY expert Mandi Gubler of Vintage Revivals could hear traffic noise coming through the century-old mercantile she's turning into a home and office in a historic building renovation. It was way. too. loud. One of the building blocks of a comfortable home is quiet – so you can think. And no drafts – so you don't shiver. And good design for everything inside it. Fortunately, Indow window inserts delivered all three for Mandi.

Saving Our Historic Windows (and Making Them 100x Better with Indow)

Customer Reviews

Excellent

4.49 Average 1479 Reviews

Reviews.io logo

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!

Posted 5 hours ago

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.

Posted 1 day ago

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.

Posted 4 days ago

Ellis W

I ordered two Indow inserts for my home. They are doing a great job, entirely happy with them and the ordering process.

Posted 2 weeks ago

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.

Posted 2 weeks ago

Austin T

I have several historic single pane gridwork mullion windows. They're beautiful but have almost no thermal protection. Indows proved to be the perfect solution to preserve these windows while getting the thermal comfort we need. They were easy to install and work perfectly!

Posted 4 weeks ago

Kathryn M

Amazingly easy to install even the safety chain holders. I. Noticed an immediate sound level difference and the room atmosphere became more solid feeling and pleasant. They also gave an insulating feature to the window drafts are non existent! The house is 50ft off a State highway that is heavily traveled in warmer months I'm confident the indows will handle it. I'm very pleased!

Posted 1 month ago

Anonymous

We ordered the acoustic inserts to help with road noise, and we've been sleeping so much better with them!

Posted 1 month ago

Sienna K

We used the windows inserts in our skylight. They are great! They the horrible drafts and noise out and were cost efficient. My only comment would be to provide better measurement and installation instructions for skylights specifically. It took us a lot of guessing and research to measure and install because skylight directions were not provided and the windows install guide doesn't always apply to skylights. Other than that though great product and I would buy again!

Posted 1 month ago

ted t

Our home was built in the late 1800s and we have spent a lot of money over the last 20+years restoring it.We did not want to replace the windows with modern windows because of the cost and originality. But the single pane windows come with a price also. the main reason we purchased the Indow window inserts is because of the condensation on the inside of the windows.We would literally have a take a towel and wipe them down every morning in the winter. There would be a puddle on the sill,and wood and water dont get along to well. SO we looked into the best solution to our problem and found Indow. Was reluctant to spend that much money but am super glad we did!! They have been installed now for over two months and our condensation problem has been virtually eliminated.!!! AND our furnace does not run as much as it did before. Over all it was money well spent!! The process was a little scary at first but they have a simple formula. And our contact person,Reed was awesome. Answered any questions i had and was always available.

Posted 1 month ago

Anonymous

Used to block interior side of a garden window in the the kitchen. Without insert, cold air literally poured into the kitchen making a winter jacket almost mandatory when preparing meals or washing dishes

Posted 1 month ago

Rob S

Highly recommend! The team (Brian) took time to help me figure out the best solution. They were made and delivered faster than expected. It was very rewarding to install them because I could feel the cold air get squeezed out as they went flush against the single pane of glass. Solid quality and great fit.

Posted 1 month ago

Alexa L

My inserts fit beautifully into my 125 year old windows - many of which were 5 feet tall. Easy to unwrap and install. Great product and even better service! I liked the process of measuring the windows with a laser measuring tool which was easy to use and precise. The product came in good condition after shipping across country and was well marked. The customer support was excellent.

Posted 1 month ago

Sarah D

Received our Indow Windows and can tell they are blocking a lot of the noise we could hear. Right now the weather is mild, but hoping to notice a big difference when the summer heats up. Our house is in a historic district and we cannot change our windows. They are very drafty and thin glass. We only ordered two, but we are in the process of ordering for four more. Love that we don’t need to drill holes or anything and they just pop right in.

Posted 2 months ago

Allan F

Every thing arrived in perfect condition, thanks to the very secure packaging. Windows fit as expected, although quite tight. After installation we noticed that the cold drafts were gone and the room felt a lot warmer. We are very satisfied with the product and the result.

Posted 2 months ago

Indow window inserts are the soundproofing solution that can finally put an end to your noise issues. Enjoy peace, quiet, and start saving an average of 20% on your energy bills. Fill out the form below for a free estimate.

*Note, overall noise reduction performance depends on how much noise is coming through walls, ceilings, floor, and doors. The window noise reduction will be less when Indow inserts are placed over double-pane windows. We do not recommend Indow inserts for reducing noise coming through laminated glass windows, triple pane windows, or hurricane windows.

Indow is fully operational making window inserts that bring comfort and quiet to your home and work spaces. Our production team is using Clean Manufacturing principles we have developed to keep them safe. No one needs to enter your home to measure or install our inserts. We ship a self-service measure kit (sanitized between each use) and deliver the inserts to your door. Just pull the insert from the box and they are ready for installation. We look forward to serving you.

  • Popular Mechanics
  • Dwell
  • This Old House
  • Treehugger
  • The New York Times

Get a Free Estimate

bedroom with window with Indow inserts installed for soundproofing in San Francisco

WE SHIP TO YOU!

You're one step closer to creating more comfort & quiet in your home.

Congratulations!

Fill out this form and one of our Comfort Experts will be in touch to prepare a specialized estimate for your space.

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.

Indow window insert compression tube color samples.

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.