Brown Stain on the Ceiling? Find the Source Before You Fix the Drywall
Renova Maintenance Services · Updated
A ceiling water stain is a symptom. In South Florida the usual causes are a backed-up AC condensate line, a roof leak or plumbing above — fix the source first, dry the area promptly, then repair the drywall.
Three usual suspects
Year-round air conditioning means AC condensate lines run constantly here, and a clogged line can overflow its drain pan onto the ceiling below. Roof leaks show up after rain. Plumbing leaks — from a bathroom or kitchen above, or the unit upstairs in a condo — can appear at any time.
The pattern gives clues, not a diagnosis: a stain near the air handler or supply vents that grows in hot, humid weather points to the AC; one that appears or spreads after storms points to the roof; one below a bathroom or kitchen points to plumbing.
Move quickly on the water
The EPA's guidance on mold is to dry water-damaged areas and materials within 24 to 48 hours to prevent mold growth. Stopping the leak and drying the ceiling is the urgent part; the cosmetic repair is not.
Then fix the drywall — once
Patching and painting over a stain before the source is fixed means paying for the same repair twice. Once it's dry and the leak is stopped, most ceiling stains are either a small patch ($95 flat) or a repair up to 2 square feet ($150 flat). Larger damage is quoted after we see it, and there's a $125 minimum per visit.