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TOPIC: PNW: Ash from the forest fires will rust your gelcoat!

PNW: Ash from the forest fires will rust your gelcoat! 08 Sep 2017 15:47 #1

  • Alan Teed
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I started washing the ash off my boat the other day only to find most of the deck, and particularly the areas of non-skid gelcoat, were completely rust spotted. Apparently the ash contains iron. I wish I had taken pictures, I would say about 50% of the non-skid gelcoat surface are was rust stained and about 10% of the horizontal smooth gelcoat, even down to the small bow "window ledges". It came off relatively easily with Muriatic acid.

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Alan Teed
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PNW: Ash from the forest fires will rust your gelcoat! 08 Sep 2017 16:00 #2

  • simbad
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Went to my boat last night. Horrible. It was covered and yellow stains here and there.
Going to get som of that acid today. Any usage guidelines?

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PNW: Ash from the forest fires will rust your gelcoat! 08 Sep 2017 17:03 #3

  • Alan Teed
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I don't claim it won't damage gelcoat although I have never seen any ill effects, so use at your own risk! I use Muriatic acid that you can buy in gallon containers at any pool supply store. I splash some on a ling handled brush and brush the affected area letting it sit for a few seconds, which is enough for light rust stains. For heavier stains I will let it pool on the stain for a few seconds. Then I immediately rinse it off. I am pretty sure it dissolves wax so I do plan to get the topsides polished and waxed on haulout this winter. Muriatic Acid is diluted Hydrochloric acid and although diluted it is still very strong. It gives off fumes when it reacts with water, and splashes of it will burn skin. At a minimum wear safety glasses and avoid breathing the fumes. To be really responsible wear long protective gloves and only work where you can stay out of the fumes (like in a breeze).

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Alan Teed
MOONDANCE
'94 4788
Gig Harbor, WA
Previously:
2006 Hylas 49' blowboat
Bayliner 2855
1977 Cal 34' blowboat
1981 Hunter 33' blowboat
Experience: Sail 50 years, Motor 15 years. 2 Transats, 1 Baltimore-Virgin Islands, 6 Months cruising Caribbean, 3-5 years cruising Med.

PNW: Ash from the forest fires will rust your gelcoat! 08 Sep 2017 17:06 #4

  • Alaskanmutt
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On and Off Cleaner, won't hurt the gelcoat and will remove the stains Don't get it on your trailer

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PNW: Ash from the forest fires will rust your gelcoat! 08 Sep 2017 17:18 #5

  • MerlinV
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We're just heading South after the smoke moved back into Desolation Sound earlier this week. The boat had a grey dusting of fine ash particles, and most of them washed off with plain water, but there are a few residual yellowy brown spots too.
Would a weak solution of oxalic acid be the stuff to use rather than the traditional bottom cleaners or muriatic acid?

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Rob
Bayliner 5788
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Vancouver BC

PNW: Ash from the forest fires will rust your gelcoat! 08 Sep 2017 19:22 #6

  • smitty477
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MerlinV wrote: We're just heading South after the smoke moved back into Desolation Sound earlier this week. The boat had a grey dusting of fine ash particles, and most of them washed off with plain water, but there are a few residual yellowy brown spots too.
Would a weak solution of oxalic acid be the stuff to use rather than the traditional bottom cleaners or muriatic acid?


Yes - that's the idea. We have had good results with Davis FSR which is oxalic acid in a non drying gel so you can smear it on larger areas and then hose it off after its done the job. Occasionally a light brushing will be needed while it remains wet if the stains have been on a while and taken some tooth.

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Northport NY

PNW: Ash from the forest fires will rust your gelcoat! 08 Sep 2017 21:49 #7

  • Uncle Bob
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Starbrite Rust Stain Remover is a spray that works well. (also good to get rid of the yellow on the dinghy bottom) Any of these things will remove the wax.
www.starbrite.com/item/rust-stain-remover
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PNW: Ash from the forest fires will rust your gelcoat! 08 Sep 2017 22:13 #8

  • Jeffw
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I just used acetone to remove some rust stains in the bilge. Works great on scuffs too.

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Jeff & Tara
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PNW: Ash from the forest fires will rust your gelcoat! 09 Sep 2017 00:15 #9

  • green650
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I can tell you what doesn't work, CLR.

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PNW: Ash from the forest fires will rust your gelcoat! 09 Sep 2017 04:00 #10

  • Koppers Kove
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The Works toilet cleaner took it right off. Got it at the dollar store, can't beat the price or results. As with other products will need to wax. Affected. Areas. Good luck, cleaned my boat up today. Yuck.

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PNW: Ash from the forest fires will rust your gelcoat! 09 Sep 2017 09:24 #11

  • Pacrimrat
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We've been in Singapore for the last week, my boat neighbor says our boats have ash on them. I have a bag of oxalic that I can mix whatever strength it takes. It isn't as effective as muriatic but not so hard on your nose and gloves. I've never had muriatic hurt the gel coat.
I'll be back on the boat Tuesday.
Several of the Starbrite product have oxalic in them. You can buy a bag of it on amazon and mix your own.

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PNW: Ash from the forest fires will rust your gelcoat! 09 Sep 2017 11:16 #12

  • simbad
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Alaskan mutt.
I have on and off on the boat. Is it safe if it gets on the stainless steel like rails and surrounds for cleats?

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PNW: Ash from the forest fires will rust your gelcoat! 09 Sep 2017 14:38 #13

  • Terkar
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BarKeepers Friend works good on removing ash and the rust stains. It is available in a spray bottle as well as a powder. Not as hard on you or your boat finish.

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Terry
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PNW: Ash from the forest fires will rust your gelcoat! 09 Sep 2017 17:34 #14

  • Centerline2
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Koppers Kove wrote: The Works toilet cleaner took it right off. Got it at the dollar store, can't beat the price or results. As with other products will need to wax. Affected. Areas. Good luck, cleaned my boat up today. Yuck.


" The Works toilet cleaner"
I agree that this stuff is great for removing organic stains...

any acid will work to remove these type of stains, and the stronger the acid the quicker it works... strong acid wont hurt polyester gelcoat, but some formulations WILL harm epoxy and certain other plastics such as nylon (nylon fittings/cleats/antenna mounts) so use it safely.

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PNW: Ash from the forest fires will rust your gelcoat! 10 Sep 2017 13:33 #15

  • Woodsea
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I just bought some Starbrite deck cleaner with PTEF and some Starbrite non skid wax. I will be applying it this week so cannot report on its effectiveness yet. They received some decent reviews in Practical Sailor and supposedly does a good job of cleaning. With regular use makes future stains come up easier. I'm hoping it works to more easily clean the deck stains we get from Bay Area pollution and nearby construction. It may help your situation??

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PNW: Ash from the forest fires will rust your gelcoat! 10 Sep 2017 14:44 #16

  • Shawnh
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PNW: Ash from the forest fires will rust your gelcoat! 10 Sep 2017 21:11 #17

  • simbad
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Jose pesky yellow stains are a nightmare.
Last weekend I had a few people on the boat and now I have hand prints in yellow. I think it might be something g to do with the sun lotion?
Even the on and off unused wouldn't remove them completely. But I was being careful as I worried about the stainless steel.

Might be time for a proper detail.
Going to start a thread on that one.

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PNW: Ash from the forest fires will rust your gelcoat! 13 Sep 2017 03:56 #18

  • igiftmon
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Holy CRAP!!!! I had one dirty girl on my hands... and it wasn't the dirty girl i was hoping for(if you know what I mean... ;) )

It took me all fricken day, last Sunday, to just get the ash off...and I still have some stains to deal with. I have a commercial cleaner that seems to remove the rust spots, pretty well. I also tried some Bartenders Friend powder and it seemed to work pretty well, too...

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PNW: Ash from the forest fires will rust your gelcoat! 13 Sep 2017 15:13 #19

  • W8N4SUN
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I jumped on it the day after the ash fell from the skies, I had left the bimini windows open and ash was everywhere - it almost made me cry! 4hrs later she looked perfect again, ugh!!!!

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PNW: Ash from the forest fires will rust your gelcoat! 14 Sep 2017 18:26 #20

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simbad wrote: Jose pesky yellow stains are a nightmare.
Last weekend I had a few people on the boat and now I have hand prints in yellow. I think it might be something g to do with the sun lotion?


Yes - avoid using the aerosol spray sunscreen anywhere near gelcoat! I remember seeing a perfect outline of my feet on the non-skid after spraying my legs several years ago. Left a very tough yellow stain - I think I used acid to remove but can't remember for sure.

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Mike
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PNW: Ash from the forest fires will rust your gelcoat! 20 Sep 2017 22:39 #21

  • Flyboy III
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Has anyone tried citric acid? We use it to prevent stains in our dishwasher.

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Fred
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PNW: Ash from the forest fires will rust your gelcoat! 21 Sep 2017 03:30 #22

  • Woodsea
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Reporting back on the West Marine non skid deck cleaner with PTEF. I figured it was the same as Starbrite and it was two for one on sale. Washed decks per instructions. At first I thougth it worked great. Then after day or two the deck started yellowing. Worse than it was. Weird! Then I took sook some on/off acid, sprinkled it around and gently washed the deck with that. That got the decks white. After rinsing well then rinsing again, letting it dry a bit, I sprayed on the Starbrite deck wax and spread it around with a microfiber cloth. Looks a lot better. Bottom line.... not impressed with the west marine non skid deck cleaner. I'm going to take the other bottle back unless some tells me I used it incorrectly.

Further follow up: it left yellow spots where ever it splashed or ran off when hosing down. It must have broken down the hand rubbed paste wax. I just reread the bottle. There is nothing about it attacking wax. In fact it says good for all surfaces. Only way I can get it off is On/Off acid then rewax. Not happy!!!

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12' Rendova center console with 40HP Yamaha
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