About Insulated Sectional Steel Garage Doors
THERMACORE® COLLECTION
Premium Construction and Maximum Thermal Efficiency
The Thermacore® Collection insulated steel doors are the ideal choice for premium construction and thermal efficiency. Featuring a steel-polyurethane-steel construction and between-section seals with thermal breaks, these doors effectively reduce air infiltration. With a variety of panel designs, they offer design flexibility, durability, and thermal efficiency, ensuring your home stays comfortable in any climate.
Key Features
5 Panel Options Available: Standard, Flush, Long, Microgroove, Vertical Short, and Vertical Long.
Thermacore® Construction: Continuous layer of foamed-in-place, CFC-free polyurethane insulation sandwiched between two layers of corrosion-resistant steel for maximum thermal efficiency.
Polyurethane Garage Door Insulation: Ensures thermal efficiency.
U-factor* of .20 (9.31 R-value**): Model 5720
U-factor* of .15 (12.76 R-value**): Model 5740
U-factor* of .10 (17.5 R-value**): Model 5760

Multiple Surface Options: Embossed wood grain, microgroove wave pattern, and smooth.
Steel Backing: Provides a clean, finished interior appearance.
Durable Finish: Hot-dipped galvanized steel with two coats of baked-on polyester paint.
In-between Section Seals: Superior resistance to the elements.
Bulb-type Bottom Weatherseal: Guards against wind and rain while providing a cushion when closing the door.
Wind Load: Our WindStorm™ wind load-rated system is available on selected products to meet regulations for a variety of wind speeds, ensuring your door is built to withstand varying wind conditions, including hurricane-force winds, and meet the most stringent local building codes.

Design Your Garage Door
Choose to Customize Your Garage Door with Your Own Home Picture or Select from Pre-Set Size Options.
Door View™ Visualizer – Design Your Door Today


Get Started
Overhead Door Company of Huntsville/North Alabama™ is standing by ready to help you navigate the sometimes-confusing new garage door buying process.

Give us a call!
We have a beautiful garage door waiting just for you! The Genuine. The Original. Overhead Door™ Brand – Since 1921.
Every Great Garage Door Deserves a Reliable Opener
Behind every excellent garage door is a dependable opener. At Overhead Door™, we merge advanced technology with maximum power to produce automatic garage door openers that are fast, quiet, and long-lasting. Our openers are crafted for superior performance, safety, and convenience, ensuring they work so seamlessly you’ll barely notice them.
Let us assist you in finding the ideal opener to suit your door and preferences. Trust Overhead Door™ for robust and reliable garage door openers. Remember, Overhead Door Company™ pioneered the garage door opener in 1921!

A Sampling of Our
Thermacore® Installations
from Overhead Door Company™

Thermacore – Vertical – Short – 199 – White – Prairie 2

Thermacore-Vertical-Short-Model-5740-(199)-Gray-Stockbridge-2-3L

Thermacore-Flush-Panel-Model-5740-(195)-Dark-Bronze-Vertical-Narrow-Window-2

Thermacore-Long-Panel-Model-5740-(198)-White-Stockbridge-2

Thermacore-Long-Panel-5740(198)-Almond-Clear-Short

Thermacore-Standard-Panel-Model-5740-(194)-Gray

Thermacore-Standard-Panel-Model-5740-(194)-White-Stockton-1-2
Your Hometown Garage Door Experts
The Overhead Door Company of Huntsville/North Alabama™ has been locally owned and operated by the Warren Family since 2004.
For over 55+ years, Overhead Door Company™ has been offering the best garage door service, installation, and repairs in all of North Alabama. We serve residential and commercial clients alike with a broad line of products sure to meet your home and business needs.
