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Why We Laser Measure Windows

Lasers can fix eyesight, help accurately hang shelving, aide in epic cat playtime, and measure for perfect-fitting custom window inserts.

Laser Cat

A tape measure will tell you the approximate height and width of a window. Our lasers get within 1/32 of an inch. A tape measure also won’t reach into corners the way a laser beam will, and it can’t be held taut by one person alone. Lasers, clearly the (light)wave of the future, eliminate measurement error.

We ask for diagonals as well as height and width to get the complete picture of your window shape. This tells us if your window frame is out of square.

For fun, our CEO measured a window using a measuring tape (not accepted by our algorithm) and then our laser measure tool. It might not look like a big difference, but it’s enough that on a high-pressure, windy day an insert made with the measurements on the left might fall out.

Measuring Tape:

  • Top: 31 1/16″
  • Bottom: 31 1/16″
  • Left: 50 5/8″
  • Right: 50 5/8″
  • Bottom L to Top R: 59 3/4″
  • Bottom R to Top L: 59 3/4″

Laser Measure Tool:

  • Top: 31 9/32″
  • Bottom: 31 3/16″
  • Left: 50 11/16″
  • Right: 50 15/16″
  • Bottom L to Top R: 59 5/8″
  • Bottom R to Top L: 59 1/2″

Out of Square Window Frames

As houses settle, window frames settle with them. Neither settle evenly, making window frames not perfect squares or rectangles. By getting six laser measurements (left, right, top, bottom, 2 diagonals) we get the exact shape of your window opening and can create a perfect custom window insert.

This isn’t just an issue for historic homes. We’ve made inserts for tens of thousands of homes and 95% of them have been significantly out of square.

This is the best way to insulate windows because the window insert is measured precisely for the window opening. It will have a snug fit and a perfect seal all the way around. For our compression system to work properly, it has to be even everywhere. If you’re looking for how to seal windows for winter, this is the best, most efficient way to do it.

Woman Measuring Window for Indow Window Inserts

Laser Measuring is Easy

All inserts are backed by a Snug Fit Guarantee because of our laser measurement system. Here’s how we do it:

We send you a laser measure kit with a fun laser measure tool (pew pew). It works just like a flashlight—with the press of a button, you get the dimensions. Enter the measurements displayed on the tool into our online portal. It checks for accuracy.

Our fit experts check the measurements for accuracy (again). If everything looks good, dimensions are on their way to becoming your custom insert. It’s that easy.

We developed the tool and software (with error detecting algorithm) because it’s the best way we know how to seal windows for winter.

How It’s Made: Indow® Window Inserts

Proof Is in the Invisible Windows

A main benefit of Indow window inserts is they disappear into your window frame. We’re able to accomplish this low profile in our compression tubing because of our precise measurements. If we had less precise measurements, we’d have to create bulkier tubing to accommodate for any small errors. So, both performance and aesthetic are ensured by laser measurement.

Hurrah for lasers!

Customer Reviews

Excellent

4.49 Average 1479 Reviews

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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