I put on something similar made by sanitred called permaflex, not a polyurea but a polyurethane
. the hull has been perfect, solid, strong, no leaks
in everyway has worked except for the marine
growth. Permaflex is a roll on paint on coating.
Dragon shield will be a superior coating I am sure of that in regards to everything except maybe price
, and the permaflex is was fine for my use.
No way permaflex could stop bullets although I think it could stop logs from getting through.
When it first went in after a couple weeks grew a slime layer, then small amount of algae and everything easily brushed off by hand including small barnacles
. I have a swim platform and could feel the bottom.
However after a year and a half the barnacles
grew to full size and are not easily brushed off. You can take a wooded oak wedge and scrape them off but the permaflex does not prevent them from sticking or growing. Perhaps they stick less than without as some that I scrape come off whole and intact.
I was after really only sealing the hull, making it strong and keeping out wood worms.
The spray on polyurea looks fast and easy to do. Working with permaflex upside down is hard work.
yes boat is in salt water
near LAFB in Hampton VA.
I used the aromatic not the aliphatic UV coating.
The aromatic coating will surface degrade turn chalky in direct sunlight. I cant say about the UV aliphatic version. But since this is underwater why use that?
here it is with one coat before I sealed up the seams on the keel
here is an interior
shot. The inside and outside is sealed on the boat and it is dry inside except for the rain.