the S-5 solution to standing seam roofs? [RE-wrenches]

[marco mangelsdorf]

Here in Aloha land we've got a lot of standing seam metal roofs.  Rather
than going down through the flat part of the metal roof to attach PV
mounting hardware into a structural member (i.e., steel z-bar purlins), one
seemingly attractive option would be to use this S-5 clamp from Dynamic
Fastener.  The S-5 clamp is essentially a machined block of aluminum which
bites down on the standing seam with a couple of SS bolts.  The mounting
rails are then bolted down onto the S-5 block.  Have any of you all used
this kind of hardware?  Have any of you had any engineering done on it in
terms of pull-off strength in 80+ MPH winds?  Intuitively, this attachment
means SEEMS pretty solid especially when the alternative is lots of roof
penetrations into the flat parts of the metal roof.  (FYI: we get an average
of 130 inches rain/year here in humid Hilo.)  But then doing commmerical PV
systems based on intuition is not a real smart idea...

aloha, marco

Marco Mangelsdorf
President
ProVision Technologies, Inc.
69 Railroad Avenue, A-7
Hilo, Hawai'i 96720
(808) 969-3281, 934-7462 facsimile
www.provisiontechnologies.com

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