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Author Topic:   Pink Stain--help
highanddry posted 06-04-2005 05:37 PM ET (US)   Profile for highanddry   Send Email to highanddry  
With our Whaler spending the summer in the driveway coverd by a navy blue custom Sunbrella cover we have noticed a pink stain on the floor/deck and here and there elsewhere. This has only happened since the boat has been left covered in rain. I am thinking the dye in the rather expensive custom cover is the culprit. I know outside is not the best place but this was to only be the summer months, the remainder of the year it is inside. We thought this cover would protect the boat and it does except for this weird stain. The stain does come out, more or less, at least so far but this cannot go on.
1. Is it the cover or something else?
2. Has anyone had a similar occurence with boat covers?
3. How do you get such stain out? Howabout rust stains while we are talking stains?
4. Maybe the cover needs to be washed or something to completely fix the dyes?
Milepost43 posted 06-05-2005 07:54 AM ET (US)     Profile for Milepost43  Send Email to Milepost43     
This may be a little off the wall, but I have a hair catcher in my shower drain that gets a very pink "stain" on it once in awhile. I believe it is some type of algae, bacteria, or?. I know it is very hard to get off. Always have to use bleach. Hope this helps.
bsmotril posted 06-05-2005 09:42 AM ET (US)     Profile for bsmotril  Send Email to bsmotril     
I've seen it in the cabin of stored boats too. I believe it is a type of mildew, and it is difficult to remove it from a pourous surface. Mild bleach solution or mildew spray will kill it and stop it from spreading. BillS
LHG posted 06-06-2005 12:59 PM ET (US)     Profile for LHG    
I have had a Whaler covered by a Pacific Blue Mills sunbrella cover for 16 years now. Never have seen anything pink. I doubt it's coming from the Sunbrella material.
Mako posted 06-06-2005 01:18 PM ET (US)     Profile for Mako  Send Email to Mako     
I have pink stains on my deck as well--from new life vests. They bleed when they get wet...
highanddry posted 06-06-2005 01:56 PM ET (US)     Profile for highanddry  Send Email to highanddry     
Yes, this is a Sunbrella material cover and other research makes it hard for me to believe it is the dye leaching out. There is nothing else in the boat, it is empty, all jackets etc are in my basement. There is nothing pink or red or such onboard. I am beginning to think it is a mildew residue that occurs where there is moisture in the boat after a rain. Some moisture gets through the cover, not much but maybe enough to promote mildew where it lands.

Is it harmfull to fiberglassto use a dilute bleach solution or is their something more suitable? Thanks.

Sal A posted 06-06-2005 02:09 PM ET (US)     Profile for Sal A  Send Email to Sal A     

This may sound weird, and I don't know wher eyou are located, but here in the mid-atlantic region (New Jersey) I have been getting a pink/orange fungus on my lawn and on a lot of foliage; this sounds fungal to me, as we have had unique weather patterns this spring.

lin posted 06-06-2005 04:30 PM ET (US)     Profile for lin  Send Email to lin     
I had a similar question earlier this spring-- pink stains on my RPS. The boat had been covered all winter with a tarp and the seat as stained where the teak back rests on it. I thought it was teak oil, but someone out here advised it was probably some kind of mildew. I was able to clean it up with a mildew remover. It took a little bit of time, I suspect because of the texture of the seat cushion. I suspect if you try mildew removers that are appropriate for the deck, or maybe even some of the stronger stain removers-- you'll be good.
where2 posted 06-06-2005 11:31 PM ET (US)     Profile for where2  Send Email to where2     
If in fact you have a Sunbrella cover, then you have reached the point in time where you need to restore the water repellent coating to the sunbrella with 303 Fabric Guard.

If in fact you have a sunbrella cover, you can literally use a diluted bleach solution on the cover, as the acrylic material's color is in the acrylic fibers and not a secondary application dye.

The only thing I have seen dyed on a Sunbrella cover is the thread material which should not be exposed to high concentrations of bleach.

Welcome to mildew 101: It comes in many different colors, I have an orangy-pink version in my bathroom which I can take samples of and mail you specimens of, if you care to pull out your microscope. My sidewalks outside grow a black version, my innermost piece of rubrail material grows both pink and black mildew, especially in the rainy season.

Ultimately, the mildew is easier to deal with than the alternative of leaving the boat uncovered!!!

For rust stains, use FSR (Fiberglass Stain Remover), or oxalic acid, or bar keepers friend.

highanddry posted 06-06-2005 11:41 PM ET (US)     Profile for highanddry  Send Email to highanddry     
Thanks for all the info.

Where2, it is Sunbrella, was advertized as such, cost as such and had multiple tags indicating the type material so IT IS Sunbrella, dark blue/navy blue! The cover is brand new, it cannot possibly need to be re-water proofed after two or three rain storms.

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