[RE-wrenches] Reroofing grandfathering

[Jason Szumlanski]

Mac makes a great point about reusing hardware. I would be very cautious
about reusing mid-clamps and end-clamps with some brands being better or
worse than others.

And this may or may not apply to you, but we had many people switch from
shingle or tile roofs to metal roofs. That could change the spacing of
attachment points, requiring more or fewer L-feet and rail attachment
hardware.

Based on my experience, unless you have a very good certainty about the
viability of existing equipment, you may not want to quote reinstallation
until you remove the system and evaluate and catalog the parts you have.

Jason


On Thu, Mar 21, 2024, 7:36 AM Mac Lewis <maclewis1 at gmail.com> wrote:

> Hi Howie,
>
> I would ask the AHJ and indicate you are simply reinstalling the system,
> not reengineering anything.
>
> I wouldn't take it for granted that the mounting hardware will be usable,
> or cost effective to reuse. It's often seized, cross threaded, dirty etc.
>
> There will be a lot of these coming up...
>
> Good luck
>
> On Thu, Mar 21, 2024, 7:29 AM Jason Szumlanski via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
>> Each state and jurisdiction could be different. Some didn't even want a
>> permit around here after Hurricane Irna in 2017. After Hurricane Ian in
>> 2022, virtually all did.
>>
>> As someone who has removed and reinstalled MANY systems to allow for
>> hurricane damaged roof replacements, my approach has always been that the
>> permit application was simply a structural application for the remounting
>> of the solar panels. I indicated that the PV source conductors (or inverter
>> output conductors in the case of microinverters) would simply be
>> reconnected in a roof mounted junction box. This never rose to the level of
>> requiring updating electrical wiring to current codes with respect to rapid
>> shutdown or otherwise. We always made sure labels were legible and did any
>> minor electrical cleanup, but I would not even provide a detailed
>> electrical plan with our applications.
>>
>> Jason Szumlanski
>> Principal Solar Designer | Florida Solar Design Group
>> NABCEP Certified Solar Professional (PVIP)
>> Florida State Certified Solar Contractor CVC56956
>> Florida Certified Electrical Contractor EC13013208
>>
>>
>> On Wed, Mar 20, 2024 at 9:35 PM Howie Michaelson via RE-wrenches <
>> re-wrenches at lists.re-wrenches.org> wrote:
>>
>>> Hi all,
>>> I have a potential job reinstalling an 11 year old 4.4kW roof mounted
>>> net metered array, feeding a PVI 4kW inverter.   The array was pulled down
>>> by a reputable company last fall, with the intention of remounting it after
>>> the asphalt shingle roof was reroofed. From a distance, it appears that it
>>> was carefully removed and all parts and pieces were saved.  Unfortunately
>>> the company's principle died in the interim and the company folded. I'm
>>> trying to determine if this scenario is grandfathered code wise, since it
>>> predates RSD. If not, I'm not sure it is worth retrofitting it with add on
>>> Tigo or APSMART equipment as opposed to replacing the whole system. In any
>>> case, before we explore the options, I'm trying to determine if putting it
>>> back up without RSD is (1) code compliant and (2) reasonable.
>>> Thanks for any insight,
>>> Howie Michaelson
>>> Sun Catcher
>>> _______________________________________________
>>> List sponsored by Redwood Alliance
>>>
>>>
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