Rust spots on GRP deck

[NFCN]

It was a schoolboy error really - the old anchor chain was just too rusty and I didn't trust it any more, so I hauled it up on deck and replaced it with 30m of shiny new 8mm chain. But I forgot to wash the deck down properly with fresh water.

2 weeks later when I returned - little rust spots on the moulded deck, everywhere. Difficult to move - have tried the various products on board but none works. Has anyone got any idea what product and method I can use to take the spots away?

Advice gratefully received

Nick

 

[Skyva_2]

Have you tried oxalic acid? Y10 or similar?

 

[EdWingfield]

I was next to a fellow using a grinderette. My deck went rusty. Elbow grease, my friend.

 

[johnalison]

I agree with Y10/oxalic

 

[duncan]

acid - then neutralise

I use starbite barnacle cleaner becasue I have some lying around - 10% hydrocholric I believe.

 

[jimbaerselman]

Paint a solution of oxalic acid on, leave for 10 minutes, flush off with salt or fresh water. Treat again for any stains which still persist.

 

[homer]

A while ago, I acquired, and used, a free sample of International High Strengh Stain Remover. Worked a treat on stubborn rust stains. Declared ingredients are unpronouncable!

 

[akirk]

Not sure of the name - but most chandleries sell a grp deck cleaning liquid which is slightly viscous - you put it on, spread it around, leave for 10 minutes and then wash off - about £10 for a bottle and half does a 35 foot yacht - did it last week!

 

[VicS]

I agree with the suggestions to use oxalic acid or an oxalic acid based cleaner. I have a powder, made by or at least branded "Starbrite" I think. Wet the deck, sprinkle on the powder, leave for a few minutes then flush away. I've had it for years. Y10, I am sure would be just as effective

 

[colin_dev]

Where does one buy oxalic acid?

I tried to local chemist. but they didnt even know what is was!

Colin

 

[Skyva_2]

Your local swindlery will be pleased to relieve you of £10 for it. But it does work.

 

[NFCN]

Thanks to all who recommended Y10. It worked absolutely perfectly.

Nick