If you have an historic home but the windows are causing you problems, then Indow window inserts are the ultimate solution. They press inside your window frame to give you completely new, outstanding performance, while allowing you to preserve your windows. No need for window replacement – just press in window inserts to block drafts, save energy and reduce sound.


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Laser-Measured for a Precise Fit

Indow inserts are custom-made from laser measurements of your window frames. Even if your windows look square, they probably aren’t: 95% of windows are slight trapezoids or parallelograms. That’s why we laser measure each window, creating a precise, snug fit to effectively seal out drafts and dampen noise. We can even make inserts for arched windows and other custom geometries.



Indow inserts are made of acrylic and edged with our patented silicone compression tubing that’s nearly invisible when installed. They blend in with the surrounding window frame, keeping the attention on your historic home’s decor and existing windows. That’s why noted Frank Lloyd Wright restoration specialist John Eifler selected Indow window inserts for his own home.


Remarkable Sound Dampening

Live on a busy street, or have any factors causing noise close to your home? Indow inserts reduce noise penetration by up to 70%, so sidewalk conversations are hushed to a whisper and traffic sounds more like a babbling brook than a honking mess.


*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 window inserts keep your original windows, but allow them perform like new double-panes. Make your home a more comfortable, quiet place to be while avoiding the cost and inconvenience of window replacement, and all the while maintaining historic integrity.

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bedroom with window with indow inserts installed for soundproofing in san francisco
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