POWER OF ATTORNEY

     Know all by these presents, that the undersigned hereby constitutes and
     appoints each of Austin K. So and Bryan Y.M. Tham, any of them signing
     singly, and with full power of substitution, the undersigned?s true and
     lawful attorney-in-fact to:

     1. execute for and on behalf of the undersigned, in the undersigned's
        capacity as an officer and/or director of Armstrong World Industries,
        Inc. (the "Company"), Forms 3, 4 and 5 (including amendments thereto)
        in accordance with Section 16(a) of the Securities Exchange Act of 1934
        and the rules and regulations thereunder and a Form ID, Uniform
        Application for Access Codes to File on Edgar;

     2. do and perform any and all acts for and on behalf of the undersigned
        which may be necessary or desirable to complete and execute any such
        Forms 3, 4 or 5 or Form ID and timely file such forms (including
        amendments thereto) and application with the United States Securities
        and Exchange Commission and any stock exchange or similar authority;
        and

     3. take any other action of any type whatsoever in connection with the
        foregoing which, in the opinion of such attorney-in-fact, may be of
        benefit to, in the best interest of, or legally required by, the
        undersigned, it being understood that the documents executed by such
        attorney-in-fact on behalf of the undersigned pursuant to this Power
        of Attorney shall be in such form and shall contain such terms and
        conditions as such attorney-in-fact may approve in such attorney-in-
        fact's discretion.

     The undersigned hereby grants to each such attorney-in-fact full power and
     authority to do and perform any and every act and thing whatsoever
     requisite, necessary, or proper to be done in the exercise of any of the
     rights and powers herein granted, as fully to all intents and purposes as
     the undersigned might or could do if personally present, with full power
     of substitution or revocation, hereby ratifying and confirming all that
     such attorney-in-fact, or such attorney-in-fact?s substitute or
     substitutes, shall lawfully do or cause to be done by virtue of this power
     of attorney and the rights and powers herein granted. The undersigned
     acknowledges that the foregoing attorneys-in-fact, in serving in such
     capacity at the request of the undersigned, are not assuming any of the
     undersigned?s responsibilities to comply with Section 16 of the Securities
     Exchange Act of 1934.

     This Power of Attorney supersedes any power of attorney previously
     executed by the undersigned regarding the purposes outlined in the first
     paragraph hereof ("Prior Powers of Attorney"), and the authority of the
     attorneys-in-fact named in any Prior Powers of Attorney is hereby revoked.

     This Power of Attorney shall remain in full force and effect until the
     undersigned is no longer required to file Forms 3, 4 or 5 with respect to
     the undersigned's holdings of and transactions in securities issued by the
     Company, unless earlier (a) revoked by the undersigned in a signed writing
     delivered to the foregoing attorneys-in-fact or (b) superseded by a new
     power of attorney regarding the purposes outlined in the first paragraph
     hereof dated as of a later date.

     IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
     be executed as of this 12th day of April, 2022.






/s/ Victor D. Grizzle
Name: