Daryl, I haven't done it but have heard of using "U" bolts from below to 2X rafters. Think 8 inch long muffler clamp with a metal flat drilled plate on the top, the bottom coated with sealant & L foot held down by nuts on top. Pullout strength is unlimited and a sturdy metal plate to attach to plus it's watertight. I have seen galv metal barns with only roofing nails holding the roof down. Low pressure inside is not a problem where there aren't 4 walls so uplift is not an issue. I'd also draw up a CYA liability release. Jim Duncan North Texas Renewable Energy NABCEP Certified Solar PV Installer No.031310-57 TECL 27398 nt...@1scom.net 817.917.0527 www.ntrei.com
-----Original Message----- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org]On Behalf Of penobscotso...@midmaine.com Sent: Thursday, April 07, 2011 4:28 PM To: RE-wrenches Subject: Re: [RE-wrenches] galvanized barn roofing Does anyone have experience mounting arrays on barns with 24" wide galvanized roofing (not standing seam)? It is flat, not corrugated, but has an overlapping edge on either side. It's pretty much a standard on barn roofs around here, but I hesitate to penetrate any metal roof. How have others dealt with this type of material? Thanks for any information, Daryl Daryl DeJoy NABCEP Certified PV installer Penobscot Solar Design _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
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