01-12-2020, 10:07 PM
I would not use a silicone as a bedding compound unless you are setting glass into a frame. I think Tiara uses Bostich 920, a urethane base construction adhesive similar to 5200, for most of their hardware bedding. Either one of these will provide a permanent seal/adhesion and are moisture cured so should be ok applying in a cool environment. Boatlife life caulk (polysulfide) will allow you to remove the porthole easier in the future if so desired. Butyl tape also works well for bedding and is easy to work with.
