The Indow Standard Grade interior storm window inserts are an innovative, cost-effective way to block drafts and noise to make your home comfortable and energy efficient. We designed these inserts to help your existing windows perform like new double-panes all the while blending into the frames so they’re nearly invisible. They install in seconds without disruption or mess.
Unlike conventional interior storm windows, these window inserts press inside your existing window frames without a damaging mounting bracket. Save money on energy bills while keeping your original windows to preserve your home’s character and value.
Standard grade custom storm window inserts:
- Nominal ⅛” thick acrylic glazing.
- Edged in our patented silicone compression tubing.
- Made in three different colors - warm white, brown and black.
- Available in custom shapes like arches and rounds.
How Custom Storm Window Inserts Work
Because houses settle, most windows aren’t square. At Indow, we laser measure every window opening and then custom make each insert, ensuring a precise, snug fit for an airtight seal that blocks drafts. That compression is also what holds the insert in place.
The inserts blend in and can’t be seen from the exterior of the house, so don’t violate historic district guidelines. People with newer double-pane windows use Indow inserts to enhance their performance.
Standard Grade inserts are suitable for any room. Some homeowners start by installing inserts in their draftiest space and over time buy inserts for the rest of their home.
Testimonials on Custom Storm Window Inserts
Instead of replacing the historic windows in his home, Kester installed Indow Standard Grade interior storm window inserts. He immediately improved the performance of his windows.
For partners Greg and Eddie, using Standard Grade eliminated condensation in their mid-century modern Texas home. But Indow inserts are versatile. For a slightly higher price, our specialty grades offer an impressive array of solutions for the myriad challenges posed by windows whether it’s the need to block sunlight or UV rays or create privacy or quiet.
How Standard Grade Storm Window Inserts Perform:
- Saves up to 20% on energy, whether winter heating bills or summer air conditioning.
- 50 percent noise reduction (10-12 dBA) when placed over single-pane windows.*
- Acoustic Grade is the best option for quieting outside noise and will achieve a 70 percent noise reduction (18.9 dBA) when placed over single-pane windows.
What Do They Cost?
What Do They Cost?
Consider the cost and disruption of replacing your windows. A vinyl window averages $66-$87/sf. A wood window averages $71-$109/sf. With Indow inserts averaging between $27-$41/sf MSRP, your window project can cost a fraction of other options.
Our workhorse interior storm window insert blocks drafts and reduces outside noise.
Our 4 options in premium grade inserts provide superior protection against noise and light.
Industrial strength inserts with a scratch-resistant coating can be cleaned with common products.
If there’s a dealer near you, a dealer will laser measure your windows and also install the inserts. They will cover all costs in your estimate, which normally includes a measure and installation fee as well as your local sales tax.
*We want to ensure our inserts help solve your noise problem. Overall noise reduction depends on the amount of noise coming through your walls, ceilings, floors, doors, and existing windows. Noise reduction will be less when placed over double-pane windows. Read our full Noise Reduction Sheet to learn more.
Each grade blocks drafts and reduces outside noise, but our premium grades have special features to make your existing windows work just right. Click here to read about all the different grades.