Join Date: Sep 2008
Location: Victoria B.C. Canada
Thanked 111 Times in 102 Posts
Rep Power: 10
Silicone doesn't seal well over time. When it has to be redone nothing will stick to the place where the silicone was as there is a residue left behind - sanding would be required remove it. Even new silicone won't stick to it well.
Silicone was touted as a miracle product in the past but now we know better.
The only place it should be used on a boat is for sealing acrylic/polycarbonate ports and even then something like Dow 795 which is not the same as marine store silicone.
5200 is the other product to stay away from as it makes removal difficult, often pulling gelcoat off with it.
Living aboard in Victoria Harbour