Polysulfide is not compatible with plastics. It eats them.
http://www.boatus.com/boattech/casey/sealant.asp
"However, the solvents in polysulfide sealant attack some plastics,
causing them to harden and split. Specifically, you must not use
polysulfide to bed plastic windshields or plastic portlights — either
acrylic (Plexiglas) or polycarbonate (Lexan). Don't use it to bed
plastic deck fittings either, including plastic portlight frames.
Plastic marine fittings are typically ABS or PVC, and polysulfide will
attack both."
Bill Bina
On 8/30/2016 12:09 PM, evans.in.gibsons via CnC-List wrote:
Polysulfate is the best for lexan. You can also use butly puddy
-------- Original message --------
From: "Hoyt, Mike via CnC-List" <cnc-list@cnc-list.com>
Date: 08-30-2016 6:58 AM (GMT-08:00)
To: cnc-list@cnc-list.com
Cc: "Hoyt, Mike" <mike.h...@impgroup.com>
Subject: Re: Stus-List Window Leak
If they are simply screwed in the why not remove screws, clean, apply
new bedding and reattach using screws? On j boats of the 80s vintage
the windows are screwed in and every three or four years if a leak
detected we removed. Cleaned and resealed with just silicone. Solved
the leaking at 20 minutes per window.
Mike
Persistence
Halifax
*From:*CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of
*ALAN BERGEN via CnC-List
*Sent:* Monday, August 29, 2016 7:37 PM
*To:* C&C
*Cc:* ALAN BERGEN
*Subject:* Stus-List Window Leak
Quick fixes rarely last very long. However, if it's just till the end
of the season, try using vinyl tape. The more screws you have, the
more problems you'll have.
Alan Bergen
35 Mk III Thirsty
Rose City YC
Portland, OR
I finally got to looking at the windows again. The screws are about
12" apart. Ill try tightening but sounds like I may need to add more
screws.
Thanks,
Jeremy
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_______________________________________________
This list is supported by the generous donations of our members. If you like
what we do, please help us pay for our costs by donating. All Contributions are
greatly appreciated!
