[RE-wrenches] clear sealant recommendations
William Miller
william at millersolar.com
Tue Aug 25 21:50:34 PDT 2015
James:
Thanks for getting back to me. I think the Navy did a study on the longevity of zip ties. I will look for it and share it.
4-5 or 8 years is beyond most installation warranty periods, so we contractors are not liable. Good news!
4-5 or 8 years is far short, however, of any module warranty period. This leaves the awkward question: What does one do with a perfectly good PV array with the wiring falling down? And another question: Do unsecured high voltage PV leads pose a danger?
These are rhetorical questions. Please don't feel they require an answer.
Aloha.
William
> On Aug 25, 2015, at 5:52 PM, James Rudolph <jamesrudolph99 at gmail.com> wrote:
>
> Aloha William,
> So far 8+ years under the module in the shade, and about 4-5 if there in direct sunlight.
>
>
>> On Thu, Aug 20, 2015 at 6:30 PM, William Miller <william at millersolar.com> wrote:
>>
>> James:
>>
>> How long do your black "zips" hold up?
>>
>> William
>>
>>
>>> On Aug 20, 2015, at 5:18 PM, James Rudolph <jamesrudolph99 at gmail.com> wrote:
>>>
>>> Aloha,
>>>
>>> We use GeoCell 4500 (Black) daily for years with no problems here in Hawaii ($4.99 a tube). I have also heard that black zips or sealant holds up better in the UV light, and my field experience seems to validate this.
>>>
>>>
>>>> On Tue, Aug 11, 2015 at 5:09 PM, Ray Walters <ray at solarray.com> wrote:
>>>> I've used Lexel before, it's the best clear caulk I've used. I used it even to repair cracks on plastic lens on concentrating modules. It holds its clarity for a long time, however I don't know if its approved for asphalt shingles.
>>>> R.Ray Walters
>>>> CTO, Solarray, Inc
>>>> Nabcep Certified PV Installer,
>>>> Licensed Master Electrician
>>>> Solar Design Engineer
>>>> 303 505-8760
>>>>> On 8/11/2015 12:01 PM, Kevin Pegg wrote:
>>>>> At recommendation from a roofer couple years ago, we have been using this product:
>>>>> http://www.sashco.com/products/lexel/
>>>>>
>>>>> Not used long enough to know if it stands the test of time.
>>>>>
>>>>> Kevin
>>>>> -----Original Message-----
>>>>> From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org]On Behalf Of August Goers
>>>>> Sent: August 10, 2015 2:53 PM
>>>>> To: RE-wrenches
>>>>> Subject: [RE-wrenches] clear sealant recommendations
>>>>>
>>>>> Hi Wrenches,
>>>>>
>>>>>
>>>>>
>>>>> For the most part we are using Chemlink M1 sealant for to seal our rooftop penetrations. It hasn’t let us down yet.
>>>>>
>>>>>
>>>>>
>>>>> M1 is a available in several opaque colors and grey is the most common. Sometimes we want a good quality clear sealant to put around conduit fittings, where our conduit enters buildings, etc. We used Geocell 2300 in the past and I don’t have anything bad to say to it but our current supplier doesn’t carry Geocell products. More recently we’ve tried Chemlink Clear sealant but I’ve already seen signs that it doesn’t hold up well in the elements – it seems to peel off the surface it was installed on and turn brown relatively fast.
>>>>>
>>>>>
>>>>>
>>>>> Does anyone have a good multipurpose clear sealant that they like?
>>>>>
>>>>>
>>>>>
>>>>> Best,
>>>>>
>>>>>
>>>>>
>>>>> August
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
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>>> --
>>>
>>> James B. Rudolph
>>> Haleakala Solar
>>> Director of Construction
>>> NABCEP Certified PV Installer # 091209-155
>>>
>>>
>>>
>>>
>>>
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>
>
> --
>
> James B. Rudolph
> Haleakala Solar
> Director of Construction
> NABCEP Certified PV Installer # 091209-155
>
>
>
>
>
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