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Originally Posted by Boater
The bathroom of my cottage has a mold/mildew problem on the ceiling... it keeps coming back.
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Mildew in the bathroom is very difficult to get rid of from painted surfaces.
I'd make sure there isn't a roof leak over the bathroom ceiling first. (You didn't state if mildew occurs on the walls, too -- and whether they're painted also).
"Kilz" (and "Kilz II") is OK if the mildew isn't severe, but painted surfaces -- even "Kilz" -- seem to support mildew growth better than most surfaces. (In my other houses). A powered vent in the ceiling is a good start, but it should also vent naturally into a vented attic area 24/7 (no restrictive flapper-valve). Warmth and moisture is mildew habitat.
My bathroom's wood paneling gets mildew, but the perforated ceiling tiles look great after 50 years! Go figure.
