[RE-wrenches] The perfect solar ready roof

[R Ray Walters]

Corrugated is really a pain to flash, but the ProPanel type roofing is really easy to work with. It has large (6 to 8"? wide) sections to put mounting feet down on.
Only problem is if the rafter you need, ends up falling under a metal ridge.
Snow slides off metal roofs all at once in big clumps, so be sure and start your top row at or close to the peak of the roof. 
I've heard of built up snow sliding all at once on a sunny day, and taking the array with it.

	
R. Walters
ray at solarray.com
Solar Engineer




On Oct 19, 2010, at 8:58 PM, Chris Daum wrote:

> Dear Wrenches:
>  
> I have a composite (shingle) roof at hand, and the owner wants to upgrade it to a metal roof and install a 5kw+ array on it.   The rafters are those (sort of) particle board I-beams covered with 1/2" plywood (and shingles).  What's the best metal roofing you could suggest--and would you beef up the wood to lag into?
>  
> Thanks for all your input.
>  
> Chris Daum
> Oasis Montana Inc.
> 406-777-4309
> 406-777-0830 fax
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