Quote:
Originally Posted by hellosailor  "The seal has to accomodate the dynamic range "
And again, every maker/supplier has technical data sheets and often architectural drawings showing eactly how to seal it properly--and how to seal it improperly, as well. You can't just screw the stuff in and expect it to work well. You CAN easily set up seals that will work for a long time.
Then there's also 3M's new VNC? VBC? double-sided tape, designed to hold large sheets of architectural glazing to metal and FRP substrates, with enough flex to hold it properly for a very long time with no leakage. It is being used on both skyscrapers and ships, it is new but information can be found on it. |
Here are a couple of pictures of the new windows (or portlights) that I installed in our Cal 29. They are made out of Lexan. I did use the 3M tape. It has an incredible grip. I was amazed at how strong the grip was. If you make a mistake in your placement, forget pulling it off to reposition it. It's not going to happen.
http://www.cruisersforum.com/gallery/showimage.php?i=3904&c=2 http://www.cruisersforum.com/gallery/showimage.php?i=3903&c=2 http://www.cruisersforum.com/gallery/showimage.php?i=3902&c=2
I am quite certain that others will be able to do a better cosmetic job of sealing the windows with the Dow Corning 795 than I was, but I have never tried anything like this before. Overall, I am pretty happy with the way they have turned out. As far as expansion, they have already been through 100+ (F) and below freezing with no ill effects. I finished these windows later in the summer this past summer.