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

[Brian Teitelbaum]

Hi Mick,

To answer part of your post, the DPW Power Rail mid-clamps give you a 3/8" gap between modules, and the SnapNrack mids give you a 1/2"  gap.

I doubt if that will give you much of a walkway though....

Brian Teitelbaum
AEE Solar


From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Mick Abraham
Sent: Wednesday, August 25, 2010 11:09 AM
To: RE-wrenches
Subject: [RE-wrenches] Tight roof layout questions: edge walkway requirements & "small gap" hardware options

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<http://www.abrahamsolar.com>

Voice: 970-731-4675
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