Red spots on non-skid

[SvenG]

Got those when we had La Petite up in Marina del Rey many years ago. There might even be a thread about it here on CF ? It was very annoying since they just suddenly appeared all over. May have gotten rid of them with FSR ... ?

Good luck with it.



-Sven

[Phoenician]

I take a scoop of oxalic acid powder (about a cup or so) and mix it in a bucket of water. It works great -especially if the spots are rust or sulfur drops from a power plant nearby- , with the precautions mentioned by capt RonB

[brianc]

Great - thanks for the info. I'll be back with the results after I try some oxalic acid and/or a dental pick.

Brian

[Vasco]

Sure looks like rust as someone else said oxalic acid will get it off, Barkeepers Friend is good, and cheap.

[gamayun]

When my boat was in San Diego, I used to get similar spots but not anymore and I've wondered if it could be from the fuel used by military air traffic, which I think is synthetic. I was able to get the spots off with a scrub pad and regular deck washing soap.

[brianc]

So I tried barkeepers friend and it worked a little bit but not much so I tried a different rust remover (different type of acid) which got most of the spots cleaned up. There are only a couple stubborn ones left but I ran out of time so I'll work on those again later.

So the verdict is that it is rust...now I just hope it's not a common occurrence!

Thanks again everyone.

Brian

[Capt RonB]

I had small dust like red spots on my deck. It was rust caused by the anchor chain. The chain doesn't need to be rusty for this to happen. The links rub together and shed small bits of metal that land on the deck and then rust in place. You don't even see them until they rust.

Damn boats.

[wanderer1]

Using a grinder or cutting disc in the area will do it everytime.Didn`t have to be you,just someone within 10ft. or so.I`m tied up in a fishing town and it`s very common on the fishing boats from working on their equiptment.And they`re all F.G.

[chrisjs]

And do not ever make the same mistake of using regular wire wool anywhere near your boat - unless you want a lot more of those red rust spots!! Took weeks of cleaning with FSR to get rid of them all. We also had a blue spot problem once after mooring in the Chesapeake. Blue spots literally covered the boat!! Turned out thousands of some sort of flying insect had died/crapped all over the boat during the night. Fortunately, they washed off fairly easily with water.