Iceni John wrote: »
I'm presently making support frames for my eight Sharp 255W panels that will be on my bus. I buy almost all my metal from Industrial Metal Supply - they have a new branch in Tucson. I bought my 6061 angle and 6063 channel from them, along with the stainless tubes for the telescoping support struts and the stainless piano hinge. IMS stocks most of the standard sizes of aluminum and steel, such as these: http://www.metalreference.com/10%20AL%20Ext%20Channel%20Equal.htm Otherwise, Orange Aluminum stocks some sizes and extrusions that IMS doesn't carry, but shipping to AZ could be expensive.
Definitely keep enough airgap under the panels so air can naturally convect under them, but also make the panels easily detachable just in case you have to replace one. Stainless hardware may be better than gr.8, but use plenty of anti-sieze to prevent thread galling.
TucsonAZ wrote: »
Just to update, I spent the night fabbing up brackets so the panels will not be drilled into in any way and will still be over an inch off the roof surface.
Skyko wrote: »
Interesting thread as we are just at the point to be ready to mount our four 270 watt panels on a similar aluminum roof with no openings. I fabricated aluminum side brackets which will allow a rack to be placed on the roof to attach the panels while still keeping no screw holes in the roof itself. I will probably drill the hell out of my panels as I don't give a **** about warranties.Attachment not found.