Batten roofs [RE-wrenches]

[Andrew Truitt]

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Great information, Steve. Thanks.  Is stainless steel is o.k. in
permanent contact with copper?

Also, if we decide to try to anchor through the battens, would Unirac
warranty any type of Toggle bolt anchoring system since the rafters
are off-set from the battens?  We would of course have to isolate the
aluminum L-feet from the copper battens.

Nice to have a Unirac staffer here on the wrenches list!

Andrew Truitt
Standard Solar Inc.



On 2/28/07, Steve Fain <sfain at unirac.com> wrote:
>
> Hi Andrew,
>         If those battens have any open space inside, crimping something
> (like an S-5! clamp) onto them would cause distortion, probably pulling the
> copper roof strips on either side of the batten together.  To my knowledge
> the S-5! folks don't make a clamp that can accommodate 2" standing seams,
> and I haven't heard of anything that will.  At any rate, you'd need to use
> brass  between the copper and the racks or module frames----aluminum in
> direct contact with copper would melt away in no time from galvanic
> corrosion.  Custom brass clamps for 2" standing seams might end up costing
> around $60 to $80 each if UniRac made them.  You'd use at least 25 or 30
> clamps---more if you're in a higher wind area.  I'll bet those welded
> flashings are looking better to you now!
>
> Steve Fain
> Customer Service/ Tech Support
> UniRac, Inc.
> 1411 Broadway Blvd. NE
> Albuquerque, NM   87102-1545
> Ph:  505-242-6411 ext. 21
> Fx:  505-242-6412
> Email:  sfain at unirac.com
> Web:   http://www.unirac.com
>
>
> -----Original Message-----
> From: Andrew Truitt [mailto:atruitt at gmail.com]
> Sent: Tuesday, February 27, 2007 8:14 PM
> To: RE-wrenches at topica.com
> Subject: Batten roofs [RE-wrenches]
>
> Does anyone know of a non-invasive method for mounting L-feet to a
> copper batten roof?  The battens are 2" x 2", 22" o.c. and sit on 3/4"
> ply with 2" x 4", 24" o.c. framing.  Our roofer will only warranty
> roof penetrations if he can use 6" welded flashings which would cost a
> lot (10 kW system) and would raise the profile more than we would
> like.  We are basically looking for the equivalent of S-5! clips for
> 2" wide standing seams.
>
> Thanks in advance for any help because I am stumped!
>
> --
> Andrew Truitt
> System Designer/Lead Installer
> Standard Solar Inc.
> 15200 Shady Grove Rd. Ste. 202
> Rockville, MD 20850
> Office: (301) 296 - 4373
> Cell: (415) 290 - 8240
> Fax: (301) 296 - 4548
> andrewtruitt at standardsolar.com
>
>
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-- 
Andrew Truitt
System Designer/Lead Installer
Standard Solar Inc.
15200 Shady Grove Rd. Ste. 202
Rockville, MD 20850
Office: (301) 296 - 4373
Cell: (415) 290 - 8240
Fax: (301) 296 - 4548
andrewtruitt at standardsolar.com

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