[RE-wrenches] galvanized barn roofing

[North Texas Renewable Energy Inc]

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
ntrei at 1scom.net
817.917.0527
www.ntrei.com



-----Original Message-----
From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org]On Behalf Of
penobscotsolar at 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


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