[RE-wrenches] Adhesives. (Was "used panel mount questions")

[Bill Hoffer]

Also realize that most chaulks use acetone to cure faster, not good for
back sheets.  PV adhesives are air cured and take a lot longer to become
full strength, at least 24 hrs under ideal conditions!  PV804 is bomb
proof,  I have done adhesion tests on junction boxes And I literally had to
destroy the module to get it off....back sheet sticking to the J B still!
Not cheap...$8-$10 a tube!

Bill
On May 30, 2013 5:27 PM, "Exeltech" <exeltech at yahoo.com> wrote:

> Wrenches,
>
> There are PV-specific adhesives certified for use on backsheets.
>
> Examples are:
>
> Dow-Corning 737
> Dow-Corning 804
> Tonsan 1527
>
> and others.
>
> These are silicone-based, but NOT at all like what you'd buy from big-box
> or similar outlets.
>
> Consumer-type silicone adhesives such as Ray mentioned will *not* have
> the long term adhesion to the backsheets.  They work for a while, but not
> 20 years.
>
> Any good distributor of adhesives will stock or can get what you need.
>
> Here in the Dallas/Fort Worth area we have a company called "Krayden".
> They have warehouse locations around the country, and stock the Dow
> adhesives I mentioned above.  I'm sure there are also other sources.
>
> For small jobs, you can buy these PV adhesives in "caulk" sized tubes
> that work (where else?) in a caulking gun.
>
>
> Dan
>
>
>
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