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Important Links
| American Institute of Architects | http://www.aia.org |
| American Society of Testing Materials (ASTM) | http://www.astm.com |
| Associated Builders and Contractors | http://www.abc.org |
| Construction Specifications Institute (CSI) | http://www.csinet.org |
| American Iron and Steel Institute (AISI) | http://www.steel.org |
| American Society of Metals | http://www.asm-intl.org |
| American National Standards Institute | http://www.ansi.org |
| Nat'l Roofing Contractors Ass'n. (NRCA) America's foremost roofers ass'n. |
http://www.roofonline.org |
| Copper Development Association (CDA) | http://www.copper.org |
| Steel Recycling Institute Information about recycling and life cycles of steel roofing |
http://www.recycle-steel.org |
| Western States Roofing Contractors' Ass'n. | http://www.westernroofing.net |