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About Us

Certified Service Disabled Veteran Owned Small Business. SDVOSBSDVOSB, Certified Service Disabled Veteran Owned Small Business
Duns 794095695
Cage Code 8AGV3
NAICS 332321, 238150, 339999
SAM registration Active
Accepts all credit cards


Innerglass Window Systems manufactures custom glass interior storm windows for energy conservation & soundproofing. An Interior Storm that outperforms almost any replacement, yet maintains the integrity and beauty of your historic windows. It automatically conforms to the opening, compensating for out of square conditions. No sub-frame needed. All glazing options available. Easy do-it-yourself installation.

Our History: The Innerglass Story

Innerglass Storm Windows, Inside Storm Windows, Interior Storm Windows, Replacement Windows

“Salty” our Official Innerglass Greeter

My name is David Degling and I’ve been interested in energy conservation since my days in high school in the 1970’s. The 1973 Oil Embargo really made a big impression on me. Those high oil and gas prices are still troubling people now.

Back then my thinking was rather blunt.

How can I keep from paying big money to Big Oil? My personal answer was to use less, not by shivering in the dark, but by being smart about how I used energy.

I drove smaller vehicles that got the best gas mileage. I drove a lighter S-10 pick up truck and it got 20 mpg instead of a full size truck that got 12 mpg. I switched lights off when not in use. I set my water heater lower. I installed insulation in my home.

I found that you don’t have to suffer or compromise your lifestyle to save energy. With good decisions you can live a great life and be green!

interior storm windows, inside storm windows, stop window drafts

My first house in 1981 was new and had wood double hung windows with thermopane glass. I thought I did well until that 1st winter when I discovered that the windows whistled in the wind! Candles would get blown out!

What could I do?

I was way too cheap to even think of replacing the windows… they were brand new! I did some research at the library (this was before the internet!) and found out about magnetic inside storms.

I made some, and they worked OK until the wind really blew, they would pop off on your head!

There had to be a better way!

Replacement Windows, Porch Windows, Interior Storm Windows, Sound Proofing, Secondary Glazing, Stop Drafts, Window Condensation ControlIt wasn’t until 1991 that I found that better way. I went to a franchise & opportunity show in Hartford CT and discovered The Alternative Window Company. They were looking to set up franchises for their Spring Loaded Compression Interior Storm Window. I had never seen anything like this kind of storm window.

It was so simple… so tight, and it was glass! I became their 1st franchisee. I liked the product so much that I bought the company.

Product Solutions

Designed and Made in U.S.A, Storm Windows, Replacement Windows, DIY Window Replacement, Energy Efficient WindowsInnerglass manufactures in the USA with American parts and labor. We have been in business since 1991.

All windows are custom made for you, crooked if necessary!

Talk to the owners (Kimber or David) to get the answers you really need.

Contact Us

David Degling & Kimber Degling

Innerglass Window Systems, LLC

15 Herman Drive, Simsbury CT 06070

Toll Free: 800-743-6207

Local: 860-651-3951 Click to Call Us

Fax: 860-651-4789

E mail:


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