[RE-wrenches] Rip in panel backing

[Exeltech]

Brian and all...

I have some of the PV-specific sealant in my office.  I'll confirm the manufacturer and part number when I go in tomorrow...

Some sealants I've used over the decades to repair PV seal initially, but don't stay sealed permanently to the PV backsheet.  It takes a few years to become "unglued".  By then .. moisture has entered and damaged the PV.

The sealant at my office goes on .. and stays on.

Watch this space.

Dan


--- On Tue, 5/25/10, Brian Teitelbaum <bteitelbaum at aeesolar.com> wrote:

From: Brian Teitelbaum <bteitelbaum at aeesolar.com>
Subject: Re: [RE-wrenches] Rip in panel backing
To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
Date: Tuesday, May 25, 2010, 6:51 PM

I like Blair’s idea, but I’ve always used a silicone sealant that doesn’t use acetic acid as the curing agent. Dow #739 is one type, but any silicone sealant that is rated as food-grade, or for aquariums, should work fine. The 739 is a “moisture-cure”, 100% silicone, which uses moisture present in the air as the curing agent. I was told many years ago that this is the stuff that is used by module manufacturers to attach and seal module junction boxes and the exit point in the laminate where the tabs come out. It would be great if a module rep could confirm this with us. 

Brian Teitelbaum 
AEE Solar