3M Marine Adhesive Sealant 5200 Fast Cure, 1 oz Tube, White, Watertight Bonding/Sealing of Gelcoat

from PunjabSis

I use it for other things ...not for a boat. I wanted a panel attached to my iron bars across my porch and this worked great to attach it and it holds up in the rain.. I used what was left to caulk the sink to the wall.. holds better than regular caulking

from _ds_

used this on the swim platform of my wake boat where the pad platform was peeling up at the edges. Has held perfectly for over a year under all weather conditions.

from Joethehandyman

I've used 5200 for a number of applications, the most critical of which was for the installation of two large brass port hole windows on a house. This was in an area that is bordered by the ocean on one side and the bay on the other. The windows were mounted with 21 lag bolts and flashed/sealed...

from Gary

I used it to seal the strut and tracking fin to my ski boat. I haven't taken the boat into the water yet but as far as I can tell the sealant cured great and is gonna work fine. The thing that worried me, is that the package states it must be used within 24 hrs of breaking the metal seal. I haven...

from Bluefin

I bought this to do some transom repairs. It did not fail to do what I needed. I have used it to seal building penetrations (electrical & plumbing). All have remained weather tight. It has never failed (as long as I follow the directions) to provide positive results. The only complaint I have is ...