Professional Trade Associations

	SMRCA: SOUTHEASTERN MICHIGAN ROOFING CONTRACTORS ASSOCIATION http://www.smrca.org/

	SMACNA: SHEET METAL AND AIR CONDITIONING CONTRACTORS' NATIONAL ASSOCIATION http://www.smacna.org/

	USGBC: United States Green Building Council http://www.usgbc.org/

	Roofers Union: United Union of Roofers, Waterproofers, and Allied Workers Local 149 http://www.unionroofers.com

	Sheet Metal Workers Union: Sheet Metal Workers’ Local 80 http://www.sheet80.org