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Author Topic:   1998 20 Outrage yellow staining hull
Swellmonster posted 06-07-2002 02:49 PM ET (US)   Profile for Swellmonster   Send Email to Swellmonster  
Does anyone have any yellowing stains on the hull? I get them and I have to clean them off with muriatic acid. Any reasons why?
tully_mars posted 06-07-2002 03:01 PM ET (US)     Profile for tully_mars  Send Email to tully_mars     
Oh yeah. The river I live on has a lot of iron in it and it leaves brown stains on anything white that hits the water.

Gelcoat is very poruous and allows water to stain it very easily, the acid it what of course cleans the stains out.

I have to acid wash and re-apply wax about two times a year to restore that new white look. The best prevention is a coat of Teflon polish and then wax over it. That seems to do the best for me.

Just remember, the acid wash takes the wax off completely, and the less wax on the hull the worse the stains will be.

All the hull cleaners have acid in them. Starbrite uses HCL, several others use oxacylic acid or something like that. They won't harm the hull, but will eat metal up so keep your trailer rinsed when washing it.


kingfish posted 06-08-2002 06:41 AM ET (US)     Profile for kingfish  Send Email to kingfish     
Additional to tully-mars-

A couple of Springs ago I was scratching my head about the scum my Outrage 22' had picked up after spending two weeks in the water on Tybee Island GA. The guys at the Beaufort Boat House (Beaufort SC) suggested using "On/Off" by Marykate Products - it has oxalic, muriatic and a third acid that I think is phosphoric. It worked like a miracle, but flushing the galvanized trailer, which I did copiously and continually, did not spare the galvanized surfaces from powdering.

Anything much stronger than oxalic acid and you really need to cover exposed galvanized surfaces with visqueen or something similar.

My $0.02-


Swellmonster posted 06-11-2002 03:57 PM ET (US)     Profile for Swellmonster  Send Email to Swellmonster     
Are there any good waxes that can be sprayed on and dont need buffing? I know, I sound like a moron, but If I have to, I will crawl under the trailer and wax it manually (ugh)

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