flat mount dilemma [RE-wrenches]

[keith]

Hello

I am looking at a pv project with a flat roof.  It is rolled brie with
plywood underlayment.  It sits on z bar purlings.  Inside the building
is a 1'x1' spline tile ceiling with zero access.  I am wondering about
the best method for mounting racking without compressing the roofing
material and creating more burden on the roof. I would desire to bolt it
thru to the z bar, but it is impossible.  I have engaged a few roofers
and they all had a different approach.  I personally would like to mount
thru to the z purlings.  I am not sure about the strength and tear of
these stainless steel self tapping screws.  I assume you need to pre
drill to get them started.

I was considering using Pro Solar Products roof jack or a similar stand
off product and have each one hot patched by a roofer because I don't
always feel comfortable with the standard roof conduit penetration boot
methodology, especially on a flat roof where water can pool. 

Any thoughts on this pursuit?

Keith Cronin
Island Energy Solutions
318 A Kuulei Road
Kailua, Hawaii 96734
808-262-3268 Tel
808-263-0338 Fax
www.islandenergy.net

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