Flex Seal on a Leaky Aluminum Boat?

[Seasons Recreational]

I just picked up a 14’ aluminum Sea King. I’ve been thinking I need to re-coat the inside just because it’s time and right now it’s all fully accessible, including a hatch to access the bow. Also, I put it in the water today and some water came inside. I’m sure there are leaky rivets throughout as the boat sat out of water since 1982 (garaged for the most part).

Should I just bite the bullet and buy a gallon tub of Flex Seal to coat the entire inside? Seems logical…

 

[briangcc]

Usually glove-it or coat-it is used as Flex seal...well....has a bunch of marketing hype but not a lot of good results long term.

 

[Seasons Recreational]

Usually glove-it or coat-it is used as Flex seal...well....has a bunch of marketing hype but not a lot of good results long term.

Do you know if one is superior to the other? The Glove-it is about 4 times the cost of the Coat-it!

 

[Scott Danforth]

Flex seal is basically roofing tar
It is not UV stable, and it cracks and fails

 

[matt167]

Gluvit is superior to coat it in a way because it’s rated and designed for boats. Coat it is basically the same thing but is actually marketed as a roofing patch sealer

 

[JASinIL2006]

Gluvit works great. Just be sure to cover it with a coat of paint to protect it from UV.

 

[Moserkr]

A previous owner covered the outside hull below waterline with coat-it. Its extremely durable and already UV resistant. I covered it with paint cause it looked ugly. Also sealed my rivets with it inside. I couldnt remove the stuff with paint remover and sand paper on an orbital is the only way to make a dent. If a rivet broke it might take a chunk with it but thats it. In 10 years Ill tell you how it worked out lol. But going on 3 years the bottom is solid.