Posted by Nick on September 07, 2003 at 21:22:14:
Our bathtub has a semi-large chip that is forming rust (see picture). The tub itself seems and looks fairly modern- I think it was installed in 1993 by pervious owners. It is made by American Standard. I think it's cast iron because it feels solid and 'thumps' when struck by hand.
How bad is this situation? Will the rust progress to the point where a hole is created? Can the chip be repaired somehow? If looks don't matter, would a light coat of high grade silicone caulk help prevent further rusting or deterioration? Other than this chip, the tub is in great shape.
Thanks for any help.