Take a look at the painted aluminum hardware on your boat or aboard the next vessel you visit. almost invariably the blisters and bubbles begin adjacent to hardware or fasteners or in high traffic areas, hatch frames/sills for instance.. How to paint a boat. in this article: article summary prepping the boat painting the boat community q&a references. as your boat begins to crack and fade after several years in the water, you have two choices -- hire a professional boat yard to paint it again or do it yourself.. The paint on the aluminum hatch frames on my 2012 sd2200 is bubbling. i know the cause, but rather than repaint and wait for it to happen again, is there a plastic framed hatch that will work? i'm looking for the manufacturer's name..
The paint continues to bubble as new metal is corroded away by the electrolyte. this can be only be prevented by total sealing of the two different metals from the salt water, something that is very difficult to achieve.. Corrosion, or aluminum oxide...translation, aluminum rust, can be repaired by sanding and repainting. with that said, when the paint bubbles up in the middle of the painted area it is usually from poor adhesion.. A blister under the paint with white powder in it is a sign of galvanic corrosion. google search it! - eliminate the source & problem solved - fail to do so & kiss ya alloy hulled boat goodbyee, in double quick time - just sit & watch it turn to white powder and blow away in your slip in front of your eyes!.
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