[RE-wrenches] Tight roof layout questions: edge walkway requirements & "small gap" hardware options

Mick Abraham mick at abrahamsolar.com
Wed Aug 25 11:09:22 PDT 2010


Hello, Team~

I'm laying out some Sanyo modules on paper. Twelve of them fit the roof with
almost too much perfection: this would be difficult to install as it would
fill the roof "edge to edge" in both directions. Are there consistent
guidelines about the amount of roof edge which must remain uncluttered or is
this mainly driven by the amount of aggravation that the installer is
willing to tolerate? Which organizations would want to influence such
decisions in the Atlanta region? Details are: residential, new construction,
wooden truss type roof framing, finish roofing yet to be decided.

I've seen fancy photos of rooftops which are covered edge to edge, but I
suppose those are "building integrated" PV systems instead of discrete
modules mounted above the roofing material. Who decides if those are "OK'
for no walkways compared to a roof that is fully loaded with Sanyo type
modules? How are such decisions made?

I like the "top clamp" style mounts but UniRac SolarMount rail systems need
about a 1" gap from one module to the next. Is there anyone with similar
hardware that can get a grip within a smaller gap?

Thanks in advance,

Mick Abraham, Proprietor
www.abrahamsolar.com

Voice: 970-731-4675
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