<SEC-DOCUMENT>0001564590-19-013953-index.html : 20190430
<SEC-HEADER>0001564590-19-013953.hdr.sgml : 20190430
<ACCEPTANCE-DATETIME>20190430062954
ACCESSION NUMBER:		0001564590-19-013953
CONFORMED SUBMISSION TYPE:	10-K/A
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20181231
FILED AS OF DATE:		20190430
DATE AS OF CHANGE:		20190430

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ARMSTRONG WORLD INDUSTRIES INC
		CENTRAL INDEX KEY:			0000007431
		STANDARD INDUSTRIAL CLASSIFICATION:	PLASTICS PRODUCTS, NEC [3089]
		IRS NUMBER:				230366390
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		10-K/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-02116
		FILM NUMBER:		19778293

	BUSINESS ADDRESS:	
		STREET 1:		2500 COLUMBIA AVE
		CITY:			LANCASTER
		STATE:			PA
		ZIP:			17603
		BUSINESS PHONE:		7173970611

	MAIL ADDRESS:	
		STREET 1:		2500 COLUMBIA AVE
		CITY:			LANCASTER
		STATE:			PA
		ZIP:			17603

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ARMSTRONG CORK CO
		DATE OF NAME CHANGE:	19800611
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-K/A
<SEQUENCE>1
<FILENAME>awi-10ka_20181231.htm
<DESCRIPTION>10-K/A
<TEXT>
Document 1 - file: awi-10ka_20181231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.1
<SEQUENCE>2
<FILENAME>awi-ex311_7.htm
<DESCRIPTION>EX-31.1
<TEXT>
Document 2 - file: awi-ex311_7.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.2
<SEQUENCE>3
<FILENAME>awi-ex312_6.htm
<DESCRIPTION>EX-31.2
<TEXT>
Document 3 - file: awi-ex312_6.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>gxzluvnviqsp000001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: gxzluvnviqsp000001.jpg

</DOCUMENT>
</SEC-DOCUMENT>