Stain on sides of boat ?

D

drk

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Hi all:
It has been awhile for me on the forms. I just came back from a wild road trip from Maryland. Picked up a new to me 2160 trophy hardtop. To go with my 20' cc.
My question is that the boat has a bron stain on it and the guy i bought it from says it is from the Chesapeake Bay water. He started to remove with 2000 grit sandpaper. 3 hours only did 1 foot square.

I will not do this today ( 1 foot of snow on boat from yesterday, just got home in time, 19 hours trailering before it started.Lucky timing) but there must be some cleaner to remove this .

thanks in advance
David
 
Hi KiDa.

Is this a cleaner from boating shop. I have never heard of Mary Kate On/off
Thanks
David
 
How about FSR (Fiberglass Stain Remover). It has worked well for me in the past. Boatfix may carry this.
 
Thanks Jamie
when the snow melts away alittle i will give it a try.

David
 
+1 on the On/Off....

A few years ago I was considering repainting my boat due to the staining of the paint... Someone recommended On/Off and it looked like a new boat (well almost). It's nasty stuff, though; read the directions and be careful.

I bought mine from the marina store.
 
You can use Muriatic Acid ,it can be found at Home Depot Stores.
 
Starbrite also makes a hull cleaner. These are all various kinds of acids. They are safe for fiberglass (study the label) but not for skin or galvanized metal.

A friend and drystack custemer at my marina was complaining about a brown stain on her swim platform from a boat above hers and had even called the marina manager after hours. Another friend and I grabbed a bottle of On-OFF and a brush, went over to her boat, poured a little on the stain, brushed it and waited a minute or two, then rinsed it off (stain gone) and went back to my boat where she was still complaining about it.

After a while you learn this stuff. ;)
 
Did you try spraying her with the on/off? If it worked, you could make millions.
 
So Goast are you saying that the on/off does not work?

How about the toilet bowl cleaner, does it work.

i will be trying it this weekend, as long as we do not get
another 10" of snow, like Sunday.

Thanks Ron

David
 
Toilet bowl cleaner belongs in toilet bowls, not anywhere on boats. Stick with the products recommended. Remember to wash off everything well. In addition, check where the runoff will go before you begin. You don't want to have the chemical-water runoff pooling where someone's pet might drink it or have it flow into local waters. Check the labels. Good luck and stay warm. Your storm is due to hit us tonight, the second major storm since Christmas. Hy
 
"The Works" toilet bowl cleaner will work. Its actually a lot less abrasive than muriatic acid, zing, on/off, or anything the marine stores sell. I use it all the time on the waterline of my BOAT.

I always say try the least abrasive way first and go from there.
 
I believe all of the above mentioned products contain varying compounds of muriatic and/or oxalic acid. Any of them should do the job including Sno-Bol (sp?) toilet bowl cleaner. Wet sanding would be my very last resort. You don't want to remove any gel coat unnecessarily. Also, keep this stuff thoroughly rinsed off all metal. Yes, it will dissolve rust and rust stains like magic but any residue will etch and promote corrosion much more quickly than it originally appeared
 
quote:
Originally posted by Ghost

Did you try spraying her with the on/off? If it worked, you could make millions.

Click to expand...

No I didn't.

I have been using the Starbrite product for years and that's what I would normally have used. Another friend had just cleaned out her boat because she sold it and had the bottle of On/Off so that's what I grabbed.

The fumes (and I suppose the acid) were much stronger than what I was used to and even pouring perhaps two ounces on a swim platform in the open air irritated my nose and mouth.
 
quote:
Originally posted by littlebookworm

Toilet bowl cleaner belongs in toilet bowls, not anywhere on boats. Stick with the products recommended. Remember to wash off everything well. In addition, check where the runoff will go before you begin.
Click to expand...


I agree on the toilet bowl cleaner. My boat cost more than some people's homes and I don't think it's worth it to take shortcuts that might damage it just to save a dollar or two. Just because some guy you know cleans his boat with toilet bowl cleaner or some other product not designed for cleaning boats doesn't mean it's not being damaged over the long haul. I've seen people cleaning their boats with Comet cleanser (an abrasive) and the boat looks clean for a while, but they are ruining the gelcoat.

Also, some of the products are less "harsh" than others. Starbrite Hull Cleaner is oxalic acid, the same acid that is used in some of the cleaners that's used on decks (like on your home).

It's critical to read and understand the label (the English part) and follow all precautions.

BTW: Any of these products will remove any wax on the surface.
 
quote:
Originally posted by 370 Motoryacht

"The Works" toilet bowl cleaner will work. Its actually a lot less abrasive than muriatic acid, zing, on/off, or anything the marine stores sell. I use it all the time on the waterline of my BOAT.

I always say try the least abrasive way first and go from there.

Click to expand...


Acids are not "abrasive".
 
I meant abrasive as in as harsh. Look at the ingredients in the works toilet bowl cleaner and then take a look at the ingredients in zing or on/off. Pretty damn close.

I don't think hes going to harm something that has been underwater and will be underwater again with something that is not as strong as straight muriatic acid like mentioned earlier in the thread.

He wasn't asking if he could use toilet bowl cleaner in his head, his deck, or on his teak wood. He was asking about removing brown waterline stains just like the ones I remove with my 1.99 "The Works" toilet bowl cleaner a few times a month.
 
Thanks everyone.

This gives me something to go on. I always read the labels instead of just going in blind. I was just looking for what direction to head in and all of you helped me with that.

I was concerned because of what the PO told me about the water stain from Chesapeake Bay, and i did not like the idea he had ( and started ) about using 2000 grit sandpaper on the hull. Even though it is an older boat i would like to keep as much of the gel coat that is there.

I use muriatic acid for doing exposed aggeraite concrete work. Pretty harsh if not rinced right away.

Littlebookworm....yes more snow tomorrow15cm, than high winds. I guess i will not be working on the boat for a few days yet.

Hard for me to look out window and know i cant go inside and start tinkering . When it finally stops i can set up a better tarp system so i can come and go as i please.

Thanks to all

David
 
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