​Therm​acore® Sectional Steel Doors

Thermacore® is the premier line of insulated sectional doors available today. Thermacore® Series commercial sectional doors are an ideal choice for applications that demand the highest levels of thermal efficiency, air infiltration and wind load resistance.​​

Engineered for High Thermal Efficiency.
The Thermacore® product line’s unique manufacturing process provides a CFC-free, fully encapsulated, foamed-in place panel which maintains R-value performance year round – and year in and year out. Thermal breaks between internal and external skins, PVC thermal break and joint seal minimize air infiltration and provide one of the highest thermal efficiency ratings in the industry for specified applications.​

Thermacore® ​591, 592, 593, 594, 596, 599, AP 850, 515 and 525 meets IECC® requirements for maximum U-Factor of operable fenestrations (2015 Section C402.4) with a 3rd party certified tested value of less than 0.37.

Thermacore® Advanced Performance Door Model 850, featuring sectional steel design with multiple small windows, installed on a commercial building in Lancaster, CA.

Thermacore® Advanced Performance Door - 850

Thermacore® AP Door Model 850 is engineered to deliver advanced performance in commercial and industrial applications where climate control, durability and ease of maintenance are primary concerns.
Thermacore® Sectional Steel Door Model 599 installed on a commercial building, showcasing its thermal efficiency and sound transmission features, with a vintage truck parked nearby.

Thermacore® Sectional Steel Door - 599

With a U-factor of .10 (R-value of 17.5), and one of the best overall air infiltration ratings in the industry, the Thermacore® Sectional Steel Door Model 599 is one of the most thermally efficient door systems in its class.
Service entrance with three white garage doors, tree in foreground, and blue sky background, relevant to Overhead Door Company of The Antelope Valley's service offerings.

Thermacore® Sectional Steel Door - 598

The Thermacore® Sectional Door Model 598 is a an exceptionally well-built door that provides a higher level of thermal protection than standard insulated doors. This premium insulated sectional door represents an economical choice for lighter-duty applications.
Thermacore® Sectional Steel Door Model 596 installed in commercial setting, featuring flush white panels with windows, designed for thermal efficiency and sound suppression.

Thermacore® Sectional Steel Door - 596

The Thermacore® Sectional Door Model 596 is ideal for extra heavy-duty applications where both thermal efficiency and sound suppression are desirable. The 596 is constructed of 20-gauge galvanized steel with a flush, textured finish.
Thermacore® Sectional Steel Door Model 594 installed on a commercial building, featuring raised-panel design and wood-grain texture, emphasizing thermal efficiency for medium-duty applications.

Thermacore® Sectional Steel Doors - 594

The Thermacore® Sectional Door Model 594 offers excellent thermal efficiency for medium-duty applications. The Model 594 doors feature a raised-panel, wood-grain textured surface for a more decorative appearance.
Thermacore® Sectional Steel Door Model 593, featuring a ribbed, textured finish and windows, installed in a commercial setting with brick walls.

Thermacore® Sectional Steel Doors - 593

The Thermacore® Sectional Door Model 593 is one of the best-selling doors in the Thermacore® line, and offers superior thermal efficiency to fit a broad range of applications.
Thermacore® Model 592 red sectional steel door with windows, designed for thermal efficiency and heavy-duty applications, set against a brick wall.

Thermacore® Sectional Steel Door - 592

The Thermacore® Model 592 offers superior thermal efficiency for heavy-duty applications. It is an ideal choice for applications that demand the highest levels of thermal efficiency, air infiltration, and wind load resistance.
Three Thermacore® sectional steel doors with windows, mounted in a commercial building's loading dock, featuring yellow safety bumpers and a blue corrugated metal wall.

Thermacore® Sectional Steel Door - 591

When your project requires a sectional door with an exceptional degree of thermal efficiency, the Thermacore® Sectional Steel Door Model 591 is a proven performer.

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