Rust spots

[Hansard]

I’ve had my quintrex for about 6 months purchased 2nd hand in good condition. I’ve started to notice small rust spots on the  gunwhales. I wash and rinse the boat after every use and have been using T20 wash n wax, I’m beginning to think this might be doing more harm than good. 

Has anyone got any ideas how to get rid of or prevent these rust spots. 

[back cruncher]

Hi all...them rust spots look like grinding sparks to me.some ones been grinding steel close to your boat.

[Swivelfish]

I had similar rust spots appear after I drilled some rivets out of my livie tank. Quintrex too. I figured I hadn't cleaned up well enough,I'd be interested to know how people get rid of them too!

[jeffb5.8]

You can use CarPro Iron X to help decontaminate it then clay bar and polish.

if it’s actual pin holes in the paint I would do the above then clean it back with Prepsol and spray clear over it to seal it.

[Hansard]

I know I haven't had a grinder near my boat but I have drilled a couple of holes... Maybe I didn't clean it up that well either. Could it be electrolysis??

[Berleyguts]

1 hour ago, Hansard said:

I know I haven't had a grinder near my boat but I have drilled a couple of holes... Maybe I didn't clean it up that well either. Could it be electrolysis??

Well, aluminium doesn’t rust but maybe some steel got into/made those holes? I have a portable aluminium BBQ on my balcony - it has signs of rust but only in the paint. Maybe there’s an iron component in the paint. 😉

[GoingFishing]

On 12/24/2018 at 8:35 PM, Berleyguts said:

Well, aluminium doesn’t rust but maybe some steel got into/made those holes? I have a portable aluminium BBQ on my balcony - it has signs of rust but only in the paint. Maybe there’s an iron component in the paint. 😉

Aluminium does not rust...but it does corrode just like all metals.

What you could be seeing in this photo is corrosion in the aluminium with the by product having a reaction with the paint.