I have a stucco ceiling that has what appears to be brown rust stains on it.
The stains appeard some time in the last month or two. In three areas there
are clear blotchy redish brown stains. Two bathrooms are directly above
this room. The strange thing is that the ceiling is completly dry. No
indication of any wetness. Also when I open the access panel for the tub
there is no indication of wetness their either. I recaulked the bathroom
about two weeks ago so that may be why everything is dry now but the
original caulking was not extremely bad. I also see faint specks of red
brown stains throughout the ceiling for the whole room beyond the three
obvious spots. This is even in spots far from the where the plumbing is.
There are only brown spots in this room. If you walk out the door of the
room there are no faint brown stains on that stucco ceiling.I fear that it
may be mold but I sprayed it with bleach and that had no effect. Also there
is no fuzziness or tackiness to the stains. Is this just a water leak or do
I have more to fear here? Where do I go from here to determine if it is
rust or mold? Why would I have three distinct spots about 1 to 2 feet away
from each other. Can I just paint over it and hope the leak is gone? Thank
you for your help.
Will the shellac seal out water? If I do have a leak will it just spread to
other areas? Any thoughts on why I have small specks of rust throughout the
whole ceiling? Is it indicative of a small leak that has accumulated over
I can't guess whether or not you've fixed the leak, but there is a
product called Covers Up, made by Zinsser that is a vertical spray tip
paint specifically designed to cover up stains on a white (flat paint)
ceiling. I haven't used it, but we got a free can. Seems easy enought to
use, but I'd wear a hat & protective glasses & a mask, etc.
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