Penetration free standing seam clamps [RE-wrenches]

[matthew tritt]

Jeff,

We do it with 2 people @ about the same time. That's because we only use the
QC version. I wasn't a fan of slopping RTV all over everything and then
waiting overnight for it to set up. Ugh! We find the US PVL's to be quick to
laminate, we don't have to put clips or holes in the very expensive roofing,
the end product has a far cleaner - less obvious appearance and, what I like
the best, you spend very little time on the roof. And no dielectric
dissimilarities! No corrosion is good corrosion.

Matt T
----- Original Message ----- 
From: "Jeffery Wolfe, Global Resource Options"
<jeff at globalresourceoptions.com>
To: <RE-wrenches at topica.com>
Sent: Wednesday, May 28, 2003 5:11 PM
Subject: RE: Penetration free standing seam clamps [RE-wrenches]


> Nick,
>
> We've used the S5 clips on standing seam roofs with UniRac and Tile Trac.
> Both are fine. The S5 clamps have enough different holes to accommodate
> anything (almost).
>
> There is the issue of the extra point load wind uplift. S5 includes a nice
> note about having a structural engineer review all installations. We try
to
> make sure the roofer has installed "a bunch" (no more scientific than
that,
> and it does leave me feeling a little "out there") of roof pan hold downs.
> Then we install a LOT of S5's. One every rib if we have any doubts, or at
a
> minimum one every other rib. At $6 a whack, it adds up.
>
> It's a nice system, but I think using a UniRac at a maximum spacing, or
even
> going to the heavy duty rail to really reduce penetrations, is a better,
> cheaper, more sure method.
>
> Matt,
>
> I have not seen the lower labor costs on UniSolar PVL's. Actually, higher
> labor costs. Similar overall costs because their is no rack to buy. But
each
> panel takes my crew of 3 about 20 minutes to laminate and apply a junction
> box to (There is a LOT of rolling the laminate out to make it stick well
if
> you follow (and you better) UniSolar's directions.  A lot slower than
> popping racks onto a roof.
>
> I'm not against (and am sometimes for) the UniSolar PVL's, but one reason
is
> NOT for the labor savings.
>
> Jeff
> Jeffery D. Wolfe, P.E.
> Principal
> Global Resource Options, LLP
> A Woman-Owned Limited Liability Partnership
> 4 Kibling Hill Road
> P.O. Box 161
> Strafford, VT 05072
> 800-374-4494 Toll Free
> 802-765-4632 Phone
> 802-765-9983 Fax
> Jeff at GlobalResourceOptions.com
> www.GlobalResourceOptions.com
>
>
> -----Original Message-----
> From: matthew tritt [mailto:solarone at charter.net]
> Sent: Wednesday, May 28, 2003 7:01 PM
> To: RE-wrenches at topica.com
> Subject: Re: Penetration free standing seam clamps [RE-wrenches]
>
>
>
> Nick,
>
> Have you considered Unisolar PVL? No clamps, no penetrations, no slipping
> and sliding around on the roof, no additional wind loading, better
> performance per installed Watt in high temp. (like on a roof) and lower
> labor costs.
>
> Matt T
> ----- Original Message -----
> From: "Nick Lucchese" <nickl at sierrasolar.com>
> To: <RE-wrenches at topica.com>
> Sent: Wednesday, May 28, 2003 4:53 PM
> Subject: Penetration free standing seam clamps [RE-wrenches]
>
>
> >
> > --
> > Greetings Wrenches,
> >   I'm quoting an installation to take place this fall and the
> > owners/architects want to utilize the S-5 clamps available at
> > lmcurbs.com. This system is new to me and I'm wondering if they can
> > be adapted to accommodate the Unirac Solarmount rails. Is it possible
> > to run the rails parallel to the seams with this system? It seems
> > like a great system to avoid roof penetrations but also seems like a
> > lot of extra drag on the roofing panels. Anyone have any hands on
> > experience with this method?
> >
> >    As always, thanks for any helpful insights any of you may have.
> > Have a great day.
> >
> >   Nick A Lucchese
> >   Sierra Solar Systems/Planet Home
> >   nickl at sierrasolar.com
> >
> >
> >   PS. If anyone thought it was important enough to go out and buy a
> > torque driver to properly torque the Sunny Boy AC and DC terminals
> > ignore the manual. 35 in. lbs will break the screw, the only torque I
> > had success with was about 15 in.lbs. This misprint was confirmed by
> > SMA but I have not seen it mentioned yet on the list.
> >
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