[stevehull]

I have 6" thick SIPS under the metal ag roof and they are rated at more than 120 mph, so I am OK there. The entire shop is made of SIPS.

But to focus on racking, it is necessary to use IronRidge, UniRack or other of the big boys? I can purchase L brackets, that attach to the roof (EPDM pad underneath to seal for water), inexpensively. But what about rails? Just the railing costs for a 10 kW (40 panel) system look like about $3000. Yikkes!

I do like the ability to have ventilation under the panels, so that is a good idea.

Someone on the site used Simpson type materials to put up racking and now I can't find it.

Your suggestion on Renvu was superb. I am getting their weekly specials and 250 watt poly panels look like $0.65 a watt. Enphase M215's at less than $120 each.

With any luck, this fall I get up on the roof. But daughter now in medical school and tuition to pay!

Great thread, BTW. VERY helpful to read and re-read.


Steve







Steve