Tile Roof Installations - watch out for gold galv. [RE-wrenches]

[Chris Anderson]

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Graham,

Just a note on the gold galvanized strut. 

We researched pretty heavily when picking our materials for racking and
found from the manufacturers that the gold galv. strut is really not
meant for outdoor applications.
The gold galv has .32 mils of Zinc. This is far less than what is on
hot-dipped galv strut (2.5 mils), which is said to be specified for
outdoor use. I would recommend for the longevity of your operation, your
ability to win projects from the competition based on the quality of the
installation that you make the switch to an aluminum or hot-dipped galv
strut racking system. 

The increase in cost for the racking is worth it to your business
reputation and the industry as a whole. I know that most of us are only
giving 5 year warranties with our systems, but I don't think that any of
us would want to see a system fail in 10-15 years when the steel rusts
through. 

As I am sure we would all agree, I think we all owe it to the industry
to do our research and select quality materials that are going to last
30 years in the field.  

 
 
Chris Anderson
NABCEP Certified Installer
Borrego Solar Systems, Inc.                                           
727 Allston Way, Suite B 
Berkeley, CA 94710
Tel. - 510-843-1113 x 105
Fax - 510-843-1116
Cell - 510-501-7062
 

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-----Original Message-----
From: Graham Owen [mailto:graham at solarexpert.com] 
Sent: Friday, May 13, 2005 3:08 PM
To: RE-wrenches at topica.com
Subject: RE: Tile Roof Installations [RE-wrenches]

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Hey Jerremy,

Just wanted to let you know that I have been using Fast-Jacks for
mounting DHW panels for about 5 years now, as well as PV, and they work
well. They can handle the weight of heavy collectors and even horizontal
storage tanks on the roof.  I use gold-galv strut on top of the rails,
stainless channel-slide nuts, and Tek screw anodized L brackets directly
onto DHW collector frames.  Typical installation of two 4'x8' collectors
needs six mounts.

I don't use Pro-Solar's aluminum rails for heavy DHW collectors, but
love them for mounting numerous PV modules because they are adjustable
and removable on the footing grid.  The top-down module clamping system
allows adjustability and removabilty in connecting modules to the rail.
Personally I find the Pro Solar apparatus to be the best for positioning
and securing modules on a surface.

Graham

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