I would ask that you contact Stephen Rhoades at Burke Industries: (800) 669-7010 x406, www.burkeind.com. Burke Industries is manufacturer of Hypalon, one of the best single ply membrane roofing products. The same (or similar) products are used for reservoir liners, pond liners, waterproofing underground homes, etc. If you need to set something on the membrane such as a heat exchanger coil, then have a pre-made walkpad heat welded under the area of the coil. The walkpads are several times thicker than the membrane itself and are made for rough service areas. Stephen really helped me a lot on one of my large commercial projects.
Aaron Wellendorf _______________________________________________ List sponsored by Home Power magazine [email protected] http://lists.re-wrenches.org/listinfo.cgi/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org

