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Conference vicki::boats

Title:Powerboats
Notice:Introductions 2 /Classifieds 3 / '97 Ski Season 1267
Moderator:KWLITY::SUTER
Created:Thu May 12 1988
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1275
Total number of notes:18109

1087.0. "Removing/cleaning water spots/calcium" by TRIGG::VOGEL (Steve Vogel - Ralston/Eveready & Emerson Sales Support) Tue Jul 27 1993 18:42

I know there are entries regarding the upkeep and cleaning of chalky
gel coat but I think my problem is a little different.  I have a new 
Fiberglas/gel coat boat that is being used in fresh water lakes.  It 
is rapidly getting a coating of (white) calcium water spots on the 
hull and deck, even though it gets wiped down with Windex after each 
weekend's use.

Does anyone know how to get/keep this off a Fiberglas boat without 
harming the finish?

/Steve

T.RTitleUserPersonal
Name
DateLines
1087.1seems too young to be chalkingROBOAT::HEBERTCaptain BlighWed Jul 28 1993 09:395
Windex? Isn't that alcohol-based? What does that do to gelcoat?

I think gelcoat *protectants* are moisturizers.

Art
1087.2explanation requested.USCTR1::BORZUMATOWed Jul 28 1993 10:418
    do you have a good coat of wax on the hull.. ?
    
    Windex,    WHY  never heard of such a thing..
    
    please explain.?????
    
    JIm
    
1087.3that's what we were toldTRIGG::VOGELSteve Vogel - Ralston/Eveready & Emerson Sales SupportWed Jul 28 1993 11:166
    That's what we were told to use by the dealer ... the boat is only 3
    months old and is not chalking, it's just that the lake water contains
    so many minerals that over a 2-3 day weekend they seem to take hold as
    permanent water spots.
    
    Steve
1087.4Similar problem (calcium/mineral buildup at water line)KAU104::BROUILLARDCan the fox outrun the rabbitWed Aug 04 1993 15:0716
	Hi guy's,
		I purchase a used 1978 GREW 15' with a 1985 70HP Jonhson
	from my out-law needless to say the price was rigth.  I've had it
	for a month and half, burned about $100.00 of gaz without any major 
	glich.
		My out-law had the boat in fresh water all summer long for
	for the past six summers.  There is a evident mineral/calcium build-
	up on the hull.  I have tried to remove the build-up with Fiberglass
	Restorer, CLR, Rubbing Compound, Steel Wool and then sandpaper which
	seems to work somewhat but obviously it does remove the finish.

	Does anyone knows about another product that migth work.

	Desperate but proud boater.

	Pascal
1087.5I'd try "Soft Scrub"MASTR::FRENCHBill French 381-1859Thu Aug 05 1993 09:4510
    For a mild abrasive to remove stuff from fibreglass, and also to help
    remove chalky old fibreglass, I have used "Soft Scrub". I believe this
    has also been used a lot in racing circles. - Like I think Dennis
    Connors used it by the caseful in New Zeland a few years back.
    
    It's a white liquid that comes in a plastic bottle. I would guess that
    it is sold up there in Kanata.
    
    Bill
    
1087.6try acidSWAM2::POTTINGER_DAWed Aug 11 1993 16:558
    I boat in Arizona and we have a lot of trouble with water spotting on
    the fiberglass.  There is a commercial product called Zing that works
    extremely well.  It is basically muratic acid (I don't know the
    concentration).  Also you can use vinegar.  Zing is very easy to use
    and the spots just wipe off.  Remember to wear rubber gloves and
    goggles.  I can clean my 29' boat in about 25-30 minutes.  
    
    Dave
1087.7Lime not calcium is the problemTRIGG::VOGELSteve Vogel - Ralston/Eveready & Emerson Sales SupportThu Aug 12 1993 11:5811
    I have since been told that my problem is Lime not Calcium as original
    thought.  I will see if I can find Zing as I have tried several other 
    products without much luck.  The boat is only 3 months old and already 
    has a growing layer of this stuff on the hull.  It is only in the water 
    for 2-3 days every other week and wiped clean when removed ... it's 
    ashame to see it coated/discolored so fast.
    
    Thanks for all the responses,
    
    Steve