<SEC-DOCUMENT>0000912562-18-000010-index.html : 20180412
<SEC-HEADER>0000912562-18-000010.hdr.sgml : 20180412
<ACCEPTANCE-DATETIME>20180412163612
ACCESSION NUMBER:		0000912562-18-000010
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20180412
DATE AS OF CHANGE:		20180412
EFFECTIVENESS DATE:		20180412

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GIBRALTAR INDUSTRIES, INC.
		CENTRAL INDEX KEY:			0000912562
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES & ROLLING & FINISHING MILLS [3310]
		IRS NUMBER:				161445150
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22462
		FILM NUMBER:		18752433

	BUSINESS ADDRESS:	
		STREET 1:		3556 LAKE SHORE ROAD
		STREET 2:		P O BOX 2028
		CITY:			BUFFALO
		STATE:			NY
		ZIP:			14219-0228
		BUSINESS PHONE:		7168266500

	MAIL ADDRESS:	
		STREET 1:		GATEWAY EXECUTIVE PARK
		STREET 2:		3556 LAKE SHORE ROAD PO BOX 2028
		CITY:			BUFFALO
		STATE:			NY
		ZIP:			14219-0228

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GIBRALTAR STEEL CORP
		DATE OF NAME CHANGE:	19930924
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>a2018supplementtoproxystat.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: a2018supplementtoproxystat.htm

</DOCUMENT>
</SEC-DOCUMENT>