Exhibit 21.1

SUBSIDIARIES OF TOPBUILD CORP.

Name

Jurisdiction

Aegis Company Merger Sub LLC

Delaware

American Commercial Insulation, LLC

Delaware

American National Insulation, Inc.

Delaware

Builder Procurement Services, LLC

Delaware

Builder Services Group, Inc.

Florida

Crossroads C&I Distributors, Inc.

B.C., Canada

Ideal Products of America Holdings, LLC

Delaware

Ideal Products of Canada Ltd.

Alberta, Canada

Ideal Products of Dongguan Ltd.

China

Ideal Products of Hong Kong Limited

Hong Kong

Specialty Distribution Group, LLC

Virginia

TopBuild Home Services, Inc.

Delaware

TopBuild Support Services, Inc.

Delaware