Forum Discussion

crcr's avatar
crcr
Explorer
Apr 06, 2014

Mineral Water Stains on Smooth Fiberglass Exterior

Hi, We bought a used TT recently, only 3 yrs old, but the previous owner left it sit in his driveway for a long time where the lawn sprinklers regularly hit the bottom couple of feet of the smooth fib...
Seeking Advice
g1g's avatar
g1g
Explorer
Apr 07, 2014
use sulfamic acid it is almost resistant to everything except calcium/lime build up. don't get confused with sulfuric acid that will eat a lot of stuff. Last time I saw it was at Sears for use as humidifier cleaner.
Another option is to get Lime delete from a restaurant where they use it on their dishwashers.
those 2 products worked best for me.

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