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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

Excellent

4.49 Average 1477 Reviews

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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 2 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 1 week 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 3 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 1 month 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 1 month ago

Adriana W

Great customer service! Super satisfied with our windows.

Posted 1 month ago

Thomas M

Indow service and product is good. Reduced outside noise considerably.

Posted 2 months ago