Exhibit 31.4
I, Leonard A. Campanaro, certify that:
| 1) | I have reviewed this Amendment No. 1 on Form 10-K/A of Armstrong World Industries, Inc.; and |
| 2) | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
Date:April 2, 2004
/s/ Leonard A. Campanaro |
| Leonard A. Campanaro |
| Chief Financial Officer |