Marine Forum

Cracks in alluminum hull

WaterMaker

22 November 2005 14:17:39

Joined: 22 November 2005 14:12:12 | Posts: 8

I have a Fisher 18 ft. boat with a alluminum 2 peice welded hull, over the summer I noticed it was taking in some water. After inspection I notice about 3 small under a half inch and 2 more about 1 inch long stress crack under the hull. After calling a few places I was informed that the hull was filled with foam and you couldn,t weld without stripping the entire deck because of a fire hazard, another marina said epoxy will be only a short term fix. Has anybody run to any problems similar the boat only 5 years old and Fisher wont repair only for the original owner. Can somebody give me some info on epoxys or any other ideas, Thanks.

Re: Cracks in alluminum hull

CaptainBoaty

22 November 2005 14:20:23

Joined: 17 November 2005 15:39:23 | Posts: 5

you could try a product called alumaloy. try a google search for it. uses a propane torch instead of oxy-hydrogen torch or mig/tig.

Re: Cracks in alluminum hull

CodFather

22 November 2005 14:24:40

Joined: 15 November 2005 16:22:30 | Posts: 6

Re: Cracks in alluminum hull

CodFather

22 November 2005 14:24:58

Joined: 15 November 2005 16:22:30 | Posts: 6

Grind it or sand it a bit to roughen it up.
Then patch it with JB Weld "Marine Weld",

http://jbweld.net/products/marine.php


or a 3M 5300 - permanent below waterline sealer.

This is what I will be using if I can ever find the leak.

Re: Cracks in alluminum hull

Anonymous user

12 April 2007 08:53:30

Joined: Unknown | Posts: Unknown

We have a ali ex army commando boat that some local yobs holed with scaffold tube, We cleaned and roughed surface,applied epoxi patch as temporary repair and it is still sound after 3years. hope this helps