Exhibit 24.1

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Donald R. Riley, Mark E. Johnson and Todd R. Moore, and each of them severally, his or her true and lawful attorney or attorneys-in-fact and agents, with full power to act with or without the others and with full power of substitution and resubstitution, to execute in his or her name, place and stead, in any and all capacities, to the Registration Statement on Form S-8 to be filed with respect to the NCI Building Systems, Inc. Deferred Compensation Plan and any or all amendments (including pre-effective and post-effective amendments) to the Registration Statement and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents and each of them full power and authority, to do and perform in the name and on behalf of the undersigned, in any and all capacities, each and every act and thing necessary or desirable to be done in and about the premises, to all intents and purposes and as fully as they might or could do in person, hereby ratifying, approving and confirming all that said attorneys-in-fact and agents or their substitutes may lawfully do or cause to be done by virtue hereof.

Name	Title	Date
/s/ Donald R. Riley	President, Chief Executive Officer and Director (Principal Executive Officer)	June 28, 2018
Donald R. Riley
/s/ Mark E. Johnson	Executive Vice President, Chief Financial Officer and Treasurer (Principal Financial Officer)	June 28, 2018
Mark E. Johnson
/s/ Bradley S. Little	Vice President, Finance and Chief Accounting Officer (Principal Accounting Officer)	June 28, 2018
Bradley S. Little
James S. Metcalf	Chairman of the Board	June 28, 2018
/s/ James S. Metcalf
Kathleen J. Affeldt	Director	June 28, 2018
/s/ Kathleen J. Affeldt
George L. Ball	Director	June 28, 2018
/s/ George L. Ball
James G. Berges	Director	May 22, 2018
/s/ James G. Berges
Gary L. Forbes	Director	June 28, 2018
/s/ Gary L. Forbes
John J. Holland	Director	June 28, 2018
/s/ John J. Holland
Lawrence J. Kremer	Director	June 4, 2018
/s/ Lawrence J. Kremer
George Martinez	Director	June 28, 2018
/s/ George Martinez
Nathan K. Sleeper	Director	June 28, 2018
/s/ Nathan K. Sleeper
William R. VanArsdale	Director	May 22, 2018
/s/ William R. VanArsdale
Jonathan L. Zrebiec	Director	June 28, 2018
/s/ Jonathan L. Zrebiec