Thermacore^® Insulated Steel Garage Doors

Premium Insulated Garage Doors That Deliver Design Flexibility.

Discover the benefits of strength, insulation, and attractive design with Overhead Door™, Thermacore^® Insulated Steel Garage Doors. Designed for residential applications, Thermacore^® garage doors combine steel construction with insulated door designs to support thermal performance, durability, and everyday comfort.

Thermacore^® doors feature insulated construction to improve thermal performance while delivering the strength and appearance homeowners expect from a premium steel garage door. They reduce heat transfer and air infiltration through the door.

Benefits of Thermacore^® Insulated Steel Garage Doors

• Insulated construction: Designed to help reduce heat transfer through the garage door.
• Durable steel design: Provides a sturdy exterior suited to regular residential use.
• Energy-conscious performance: Insulation can improve thermal efficiency, especially when the garage connects to living spaces.
• Attractive appearance: Available designs and finishes can complement a variety of home styles.
• Everyday functionality: Combines insulation and steel construction with convenient overhead garage door operation.

The collection’s steel-polyurethane-steel construction, thermal breaks, between-section seals, and bottom weatherseal help limit drafts and improve the door’s thermal performance. Proper installation and weatherstripping also help maintain comfort in the garage.

Thermacore^® Insulated Steel Garage Doors

Whether you’re upgrading your home’s curb appeal or want a garage door that helps maintain more consistent indoor temperatures, Thermacore^® offers models to suit different performance needs and architectural styles.

Product Literature

Thermacore^® Collection Models 5720, 5740 & 5760 Brochure

Modern Metallic Finishes Brochure

Brochure – Thermacore^® Windstorm 5745-5765

Thermacore^® construction:

5 Panel Options Available: Standard, Flush, Long, Microgroove, Vertical Short, and Vertical Long

Thermacore® Construction: Provides a continuous layer of foamed-in-place, CFC-free polyurethane garage door insulation sandwiched between two layers of corrosion-resistant steel for thermal efficiency

Polyurethane Garage Door Insulation:

Provides thermal efficiency

• Model 5720: 9.31 R-value**
• Model 5740: 12.76 R-value**
• Model 5760: 17.5 R-value**

Multiple Surface Options: Embossed wood grain, microgroove wave pattern, and smooth

Steel Backing: For a clean, finished interior appearance

Durable Finish: Hot-dipped galvanized steel with two coats of baked-on polyester paint

In-between Section Seals: Seals provide 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 can withstand varying wind conditions, including hurricane-force winds, and meet the most stringent local building codes. ​​​​​​​​​​​​​​​​​​​​​​​​​​​

Warranty

• 20-year limited warranty on Model 5720
• Limited lifetime warranty on door Models 5740 and Model 5760

Residential garage door and opener system limited warranty 

• (when purchased together) – features 3 year on components (see warranty for details)

Overhead Door™ Brand participates in the DASMA Thermal Performance Verification Program. The program verifies the thermal performance of sectional doors.

The lower the U-factor rating, the better the thermal performance.

The R-value of the Door determines Thermacore® Garage Door Model Numbers.

Multiple Surface Options