Aluminum corrision

[Uncle Dave]

Greetings,<br />I have removed all the foam from a Sylvan 21'. The alum hull is badly corroded on the inside. White slimey mess. Still wet from rainwater?. Seveal holes (one inch) in the hull. They are repairable. <br />The bigg question is how to remove the corrision and treat the alum before repouring the foam.<br />Maybe acid and then zinc chromate primer. Nice boat, just abused by a previous owner.<br /><br />Thanks,

 

[Black Max]

Re: Aluminum corrision

You can try alumi-brite. The best product that I have used was a hydrochloric acid based aluminum cleaner, industrial stength. It made the aluminum look chrome, but I went to the extremes. I would just go ahead and try a hardware store type cleaner like alumi-brite. <br />I f you are looking for an acid based substance it should contain hydro chloric acid, which will clean anything off of aluminum. Use safety equiptment when working with any acids.