Originally Posted by campingva
Installed on in My Hybrid on the wall outside the shower. Used short screws that I coated with Gorilla Glue and it has held for about 5 years now. No problems.
I would treat any exterior penetrations like I do those on my boat. I would use 3M 4200 for non-permanent and 5200 for permanent installations. Sikaflex also makes some good sealant products for the marine world and I would use those too.