Stained fiberglass deck.

[Erock]

I was just wondering if anyone has used bleach to clean the decks of their boats, or maybe on/off or something similar. I've got some pretty bad stains I would like to get rid off and Simple Green isn't doing the job. Thanks

 

[gm280]

Erock, before jumping in with any type cleaner, use it on a smaller out of the area place first to see how it works first. JMHO

 

[Ned L]

How bad or noticeable are they? Do you have any idea what they are from? Is the surface smooth or textured? Is the fiberglass fairly new with a good surface, or weathered and oxidized. Can you post some pictures?
All this would be helpful in making any sort of meaningful suggestions.

 

[Tugdawg]

I've used muratic acid diluted 50% with water and a dash of boat soap. Let it sit a bit and then wash off. It'll take the wax off so if you use it on the hull rewax...

 

[bajaunderground]

I tend to stay away from bleach as it's an oxidizer and can add to oxidation of the gel coat. Is it wax/rubbing compoundable? If it is, a good rubbing compound can remove staining? Once removed, you can re-wax and should hold-up well? A toothbrush or larger similar brush with a mild abrasive cleaner might do trick as well? When cleaning of the interior decking of my Chris Craft (after 8+ years of carpet covered exposure to the elements) we use soft scrub bathroom cleaner which is a bleach product with mild abrasives to get the stubborn stains up, it worked well, however, it never regained any shine/luster? Could've been the exposure or the soft scrub?

Good Luck!

 

[Erock]

How bad or noticeable are they? Do you have any idea what they are from? Is the surface smooth or textured? Is the fiberglass fairly new with a good surface, or weathered and oxidized. Can you post some pictures?
All this would be helpful in making any sort of meaningful suggestions.

I just recently purchased the boat so I have no idea what the stains are. The surface is textured( it's where we walk) so I don't plan on waxing afterwords. I just want to get it looking clean. I might try to use some hull cleaner and see if that works. The boat is self bilging so if I'm careful I shouldn't have to worry about getting the stuff on the carpet that is under the benches and in the ski locker.

 

[Kruegs35]

I just used Star Brite Gel Hull Cleaner and it worked great. I had some tough staining around my water line and it took it off almost instantly. Bought it at my local Walmart.