Remove stains from gelcoat

[cdlong]

I have 5 stains that I have tried the 2 cleaners on, with scrub pad & stiff brush. One stain lifted well, the other 5 are a PIMA! Anyone know how I can remove them before I apply the floor sealer to get her shine back?

[otterhound]

FSR by Davis will work well on stains like that. It's basically oxalic acid in gel form. Brush it on, leave it for a few minutes, remove with water and a sponge or brush.
Rod

[PigSticker]

Some stains can get so deep in the gelcoat that you have to sand them out, and sometimes that may not even work..

[erebus]

Mary Kate On-and-Off.
Its our go to waterline stain remover here at the yard come haulout time.
Just dont let it drip on your galvanized trailer!



(FYI- its a combo of hydrochloric, oxalic and phosphoric acids)

[CJg8r]

I've had good luck with snobowl toilet cleaner

[uncleboo]

Originally Posted by erebus

mary kate on-and-off.
Its our go to waterline stain remover here at the yard come haulout time.
Just dont let it drip on your galvanized trailer!



(fyi- its a combo of hydrochloric, oxalic and phosphoric acids)

wear a mask and have plenty of ventilation!

[erebus]

Originally Posted by uncleboo

wear a mask and have plenty of ventilation!

Plus heavy gloves and eye protection!!

[BigLew]

If you believe it is an iron based stain (rust stain), go with Iron-Out. Get it in your grocery store or Home Depot.

Also, You might try white vinegar first, rinsed and then go at it with baking soda.

Just a thought- no garruantees

[cdlong]

Thank you!