Join Date: Apr 2012
Location: Baltimore, MD
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Re: Helms25 Window Gaskets
Got the frame apart, and finished cleaning out the old caulk. I see that inside the frame its an old gasket. I think I'm going to replace that with caulk, not butyl tape, because this frame doesn't really have anything holding pressure between the frame and the plexiglass. A small riveted side panel isn't enough pressure. So I'm going to use an acrylic/polycarbonate compatible sealant, like Sika 295 for the frame to the window, and then use the butyl tape between the frame and the gelcoat/boat.
I'm a little worried that the frame might not pull itself as tight as necessary with the limited number of threads and age of the window, but hopefully I'm wrong. I can always use a larger diameter tap/screw set if it doesn't pull tight enough.
I'll try to post pictures as I finish.
Last edited by TheManKinahan; 04-06-2014 at 09:18 PM.