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Plexiglass window thickness?

Sep 30, 2013
2,881
1988 Catalina 22 central Florida
How does the tape look up close?
Invisible! :)

Painting would have been a waste of time. Looking through the dark tinted plexi, the gray tape appears just as black as the silicone. You can't see where one starts and the other ends, no matter how closely you look.

It's hard to photograph, but here's the bottom edge of the saloon window:

 
Sep 23, 2009
1,375
O'Day 34-At Last Rock Hall, Md
Do search in the oday forum under replacing windows for details.
 
Mar 20, 2012
3,983
Cal 34-III, MacGregor 25 Salem, Oregon
Gene,
I think gloss black Rustoleum will do the trick, no sanding required. We shall see...
Dont use gloss. Let the surface of the plexi be the shiny part, because you want the black background to have no reflective to it...
 
Sep 8, 2014
2,549
Catalina 22 Swing Keel San Diego
Invisible! :)

Painting would have been a waste of time. Looking through the dark tinted plexi, the gray tape appears just as black as the silicone. You can't see where one starts and the other ends, no matter how closely you look.

It's hard to photograph, but here's the bottom edge of the saloon window:
Awesome Gene! I think because the Plexi is 1/4" thick it really helps smoke out the tape. Is your 3M tape black or grey in color? Either way, you hit this one out of the park...
 
Sep 30, 2013
2,881
1988 Catalina 22 central Florida
Awesome Gene! I think because the Plexi is 1/4" thick it really helps smoke out the tape. Is your 3M tape black or grey in color? Either way, you hit this one out of the park...
Thanks, Luke! I owe a lot of it to you though, and others here who helped out. By the way, that disc sander you encouraged me to buy for the last project came in very handy for this one. I rough-cut the plexi pieces with a jigsaw, then fine-tuned them with the disc sander. Easy peasy.

The tape was/is gray. I was not expecting it to disappear 100%, but it sure did.
 
Jan 22, 2008
7,074
Beneteau 323 Annapolis MD
Why not just sand the perimeter of the window, so it is like frosted and you can't see through that anyway.
 
Dec 29, 2008
702
Treworgy 65' Custom Steel Pilothouse Staysail Ketch St. Croix, Virgin Islands
Looks great - nice job!
 
Oct 17, 2004
523
Tanzer 29 Jeanneau Design Sandusky Bay, Lake Erie
Those turned out really nice! Really Nice! I did my rear ones on my Tanzer last spring. I used the Rustoleum black made for plastic and allowed a visible black border to extend into the port opening approx. 1/4". Looks factory fresh. Agree with needing to tape really well to prevent a mess.

Yours turned out really nice. Takes years off any boat.

JerryA
 
Feb 24, 2013
82
Coronado C25 San Pedro, CA
I was thinking of the tape and the 795 for my Coronado 25 but when I walk on the deck it looks like the side walls where the portlights go flex a bit, I wonder if that method would stay sealed as the Aluminum frames do. any input would be helpful...