Storm Window Alternative for Old and Historic Homes

Historic craftsman home with Indow storm windows installed: Inserts don’t harm old home’s windows.

Alternative to Historic Storm Windows

Indow window inserts are an attractive, easy-to-use interior storm window. Original windows are important to the architectural character of historic buildings. Unfortunately, they’re also a top source of energy loss. The drafts can make you feel uncomfortable, but also drive up energy costs. While exterior storm windows provide some energy efficiency benefits to your older home, they’re difficult to use and often unsightly. Indow window inserts are an alternative to exterior storm windows.

Read on to learn more or visit our storm windows guide to see which works best for you.

Diagram of how to install indow insulating window inserts

The Problem with Replacing Your Historic Windows

The Illinois Historic Preservation Agency put together a great report on why you should use storm windows for historic homes. It outlines the harm that can come to a historic home if the owner replaces the windows instead of restoring them.

Use interior storm windows for old houses because of:

  • Sustainability: Tearing out old windows and putting them in landfills harms the environment.
  • Aesthetics: New windows cannot mimic the look of historic windows or use same materials like old-growth wood. Indow inserts are interior storms that both look good and are barely noticeable.
  • Maintenance: Many new window materials (vinyl, fiberglass, sealants) are difficult or impossible to recycle. Indow inserts come with a limited lifetime warranty and do not require any maintenance – just occasional cleaning like all windows.
  • Cost: High quality replacement windows cost three times as much as restoring original windows.
  • Ease: Measuring for, receiving, and installing Indow inserts can typically be done with only one person and requires around a combined time of around 15 minutes per window.

Historic storm windows are one solution to avoid doing a full replacement. Unfortunately, many storm windows require installing a track system on the window frame. This not only alters the frame, but isn’t aesthetically pleasing.

Indow window inserts in historic windows to improve performance without harming the historic value

The Storm Window Alternative

Indow inserts are custom storm windows for historic homes. Indow uses proprietary measurement verification software to ensure a perfect fit – up to 1/32’’, even in out-of-square windows. The simple and elegant design makes them hardly noticeable once installed. Unlike other storm windows, Indow inserts fit without any modifications to the window frame, and are held in place with our patented silicone compression tube around the outer edge. This means your old, historic windows will perform like new windows without losing their historic value.

If your historic home needs an alternative to replacements or clunky storm windows, contact us today!

Customer Reviews


4.49 Average 1423 Reviews logo

Charles T

Working with Indow has been a great experience from start to finish. They answered all our questions & guided us through the whole process. We ordered 15 inserts & they have reduced the Highway noise that we were experiencing after buying our house. A great product & innovative company.

Posted 1 day ago

Sue W

I live 20 feet from a busy road with lots of trucks. We almost didn't buy the house because of the noise. my house is the perfect candidate for indows. After installing them (myself. .. directions were so easy) we can barely hear any trucks noise at all. Indies live up to their claim and has made a huge difference.

Posted 2 days ago

Richard H

I am very pleased with the noise reduction and heat-trapping effects of my Indow inserts. I bought three small inserts as an experiment for the noisiest part of the house all year round, and where it's cold in winter. They have done beautifully well in sealing out both noise and heat. My only issue has been to get one of them installed perfectly straightly on one side, but it was done in a difficult location and isn't that important. They are also quiet expensive, but I may get a federal tax rebate on them.

Posted 6 days ago

Hee D

It could have been better if the pallet was collected after the delivery. Also the inserts are more beneficial for picture/fixed windows rather than open windows. The price of insert are expensive.

Posted 1 week ago

Larry S

I was pleasantly surprised how well the appearance after installation, perfectly clear, plus reduce the noise from the outside more than I expected. I would definitely recommend anyone looking for noise reduction to consider these. I will be purchasing more as time goes on, thank you Indow

Posted 1 week ago


Called about price $1000.00 For 2 small windows asked about energy savings? They said no guarantees depending on location and almost other factors, why would I spend that money w no guarantees

Posted 1 week ago

Christie R

It has cut down noise tremendously and is definitely more efficient with keeping our cooling in and heat out this summer.

Posted 1 week ago

William U

Indow is a trendsetter in eCommerce. They make the entire process of ordering, purchasing, and installing their product very easy for any walk of life; and, their communication processes are excellent. The inserts I purchased and installed were just as described. They are effectively blocking soundwaves, but not vibration, which was discussed during my initial call with an Indow Representative. I would recommend Indow window inserts to a friend.

Posted 1 week ago


Our window inserts have decreased road noise in our bedroom by 75 percent which we are very pleased with. The whole process was extremely simple and organized. Everyone we dealt with was professional and helpful. The inserts were simple to install and I would recommend to others.

Posted 2 weeks ago

Jeanne S

They make it easy to measure and install and it does reduce the noise as I live next to a busy highway. I am happy with the purchase.

Posted 3 weeks ago

Ivan L

We have a multi-story building construction next block that starts at 7 a.m. daily and a busy street a few blocks away. Before the insert was in place in our bedroom, we heard every piece of construction equipment there, including the obnoxious beeps from vehicles backing down in the lot, and all of the emergency vehicles passing by on the avenue. Now, this sounds like something happening twenty blocks away, barely noticeable. This is a huge quality-of-life improvement from day one of the insert installation.

Posted 3 weeks ago

Stan B

All fit as planned and are good

Posted 3 weeks ago

Cassie M

Overall very easy process from ordering to install. Was just hoping that the sound dampening would have been a little better.

Posted 3 weeks ago

Dan C

Effective and frequent communication from Indo Window starting with the order process, through production and post-delivery. The insert fit was excellent, fitting snuggly. The panel is quite effective in reducing noise. My wife was sleeping in the basement due to traffic noise. She is able to sleep in her bedroom again. Overall an excellent experience!

Posted 1 month ago

Lynett P

Great product. Arrived a bit dirty.

Posted 1 month ago