Attached files
Exhibit No. 23.1
Consent of Independent Registered Public Accounting Firm
The Board of Directors
Armstrong World Industries, Inc.:
Armstrong World Industries, Inc.:
We consent to the incorporation by reference in the registration statements (Nos. 333-138034 and
333-154765) on Form S-8 of Armstrong World Industries, Inc. of our reports dated February 26, 2010,
with respect to the consolidated balance sheets of Armstrong World Industries, Inc. and
subsidiaries as of December 31, 2009 and 2008, and the related consolidated statements of earnings,
equity, and cash flows for each of the years in the three-year period ended December 31, 2009, and
related financial statement schedule, and the effectiveness of internal control over financial
reporting as of December 31, 2009, which reports appear in the December 31, 2009 annual report on
Form 10-K of Armstrong World Industries, Inc.
/s/ KPMG LLP
Philadelphia, Pennsylvania
February 26, 2010
February 26, 2010