I ran a small bead of 3M 4000 UV along the tops of my cabin windows, and after 
a couple of years noticed that it had separated from the Plexiglas along the 
entire length. It is still stuck very well to the gelcoat. Maybe it would have 
stuck with a suitable primer, I don't know, but I found no reference to any 
such thing when I (later) checked the product documentation. Adhesion 
characteristics for metals, gelcoat, fibreglass, hardwoods, and even nylon are 
given, but acrylic plastic is not mentioned and there is no list of materials 
with poor adhesion characteristics. Seems odd given that the "UV" 
characteristic is specifically mentioned as making the product suitable for 
glazing.

Anyway, that was my experience. 

Steve Thomas
Port Stanley, ON
  ----- Original Message ----- 
  From: Gary Russell via CnC-List 
  To: C&C List 
  Cc: Gary Russell 
  Sent: Thursday, December 03, 2015 19:51
  Subject: Re: Stus-List Bonded Windows (continued)


  Allen,
       If I understand your question, I used Dow Corning 795 Black silicone.
  Gary


  ~~~~~~~_/)~~~~~~




  On Thu, Dec 3, 2015 at 7:46 PM, allen via CnC-List <cnc-list@cnc-list.com> 
wrote:

    What did you use for caulking to protect the bond?  My caulking is coming 
undone.

    Allen Miles
    s/v Septima
    C&C 30-2
    Hampton, VA


    From: Andrew Burton via CnC-List 
    Sent: Thursday, December 03, 2015 9:26 AM
    To: cnc-list@cnc-list.com 
    Cc: Andrew Burton 
    Subject: Re: Stus-List Bonded Windows (continued)


    <snip>
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