water on ceiling causes 2

https://blast-wiki.win/index.php/When_You_See_a_Water_Stain_on_Ceiling:_Roof_Leak,_AC_Condensate,_or_Attic_Condensation%3F

Water stains spreading across your ceiling usually mean a leak from above—maybe a busted pipe, a dripping roof, or an overflowing bathroom. That yellow-brown ring starts small, but it grows fast, and if it's actively wet, it can sag and eventually collapse. Don't ignore it; dry it out, find the source, and fix it before mold takes hold.