Get terminology correct.
1. Lights are fixed to frames and are solid with the hull
2. Port Lights are a glass or plastic normally set in a metal or plastic frames. These are
set on hinges and have dogs
to lock them. Hence port - lights being transparent
are solid door or hatch
, normally a metallic that is secured with dogs
. Vent only
From your picture, you are replacing Lights, not port / lights. With building boats for more than 55 years, I always used Butyl Rubber sealant
, it stays pliable for decades, never leaks
and can easily replace glass, lexan
, etc. easily in the future.
Never want to use products like 5200, will they work
, yes. Can you replace the glass, no.
Dow 795 does work
quite well for a bedding sealant
, especially on large lights like those side lights on trawlers and motorsailer
pilot house windows. Main thing with 795, check the date, if it is expired, don't use it. It seams to never harden just stays as it came out, don't set. As far as getting yours apart, I've found a sharpened edge on a flexible putty knife works most of the time.
Happy sailing all.
Capt. Vince Rakstis, Ret. MS St.Petersburg, Fl.