ROCK · Annual Report (Form 10-K) · Filed February 26, 2026

Gibraltar Industries Inc — 10-K exhibit

q42025exhibit211.htm

Gibraltar Industries Inc on Boardroom Alpha

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EXHIBIT 21.1

SUBSIDIARIES

The following is a list of the subsidiaries of Gibraltar Industries, Inc. as of February 24, 2026. The names of indirectly owned subsidiaries are indented under the names of their respective parent corporations:


Appleton Supply Company, Inc.						Delaware
Architectural Mailboxes, Inc.						Delaware
Arundel Square Garden, LLC						Delaware
Bingfield Park, LLC						Delaware
Golders Hill Park, LLC						Delaware
OmniMax International, LLC						Delaware
Amerimax Canada Holdings, Inc.						Canada
Amerimax Canada, Inc.						Canada
Amerimax Richmond Company, Inc.						Indiana
Euromax UK Limited						United Kingdom
Hancock Enterprises, LLC						Delaware
Nu-Ray Metal Products, LLC						California
Nu-Ray Metal Products, LLC						Washington
D.S.B. Holding Corp.						Delaware
The D.S. Brown Company						Ohio
Florence Corporation						Illinois
Florence Corporation of Kansas						Kansas
Gibraltar Building Envelope, Inc.						Delaware
Construction Metal Products, Inc.						Delaware
Epic Steel, LLC						Montana
Flatiron Steel, LLC						Colorado
Gideon Steel Panel Company, LLC						Delaware
Teton Steel, LLC						Idaho
Gibraltar Industries Holding Company (UK) Limited						United Kingdom
Rough Brothers Greenhouse Manufacturing (Shanghai) Co., Ltd						China
Gibraltar Steel Corporation of New York						New York
Air Vent Inc.						Delaware
Southeastern Metals Manufacturing Company, Inc.						Florida
Pacific Awards Metals, Inc.						California
Noll/Norwesco, LLC						Delaware
SBC Acquisition, LLC						Delaware
Quality Aluminum Acquisition, LLC						Delaware
Rough Brothers Holding Co., Inc.						Ohio
Lane Acquisition, Inc.						Delaware
Lane Supply, Inc.						Texas
Rough Brothers Manufacturing, Inc.						Ohio
Prospiant, Inc.						Ohio
Apeks, LLC						Ohio
Thermo Energy Solutions, Inc.						Canada
Terrasmart, Inc.						Ohio

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