Because it was damp and had a food source.
paint on some bleach based outdoor cleaner if you haven't tried already, it might take couple applicationsWas this caulk or grout that you removed? I have a similar job, but I am working with mildew on grout and none of my go-to products are budging it. Any suggestions on removing the mildew without removing the grout?
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CorrectIt is Caulk. The reason I dislike it on floor perimeters
Caulk does not allow vapor transmission. will mildew from inside out. Not clean-able, must remove.
Grout does allow vapor transmission.
SGA does not allow vapor transmission
Mike, have you been back on white SGA shower floor perimeter you have done after a year that is used actively? Like this one that had know mildew issues on what appears like a good caulk install.
Good on you for multi tasking. I poop, read the newspaper and drink my coffee at the same time.Gotta hit the ground running.That looks like where I pee every morning in my shower.