Mold is a fungus found nearly everywhere outdoors. It becomes a problem when spores land on damp materials indoors — drywall, wood, carpet, insulation, ceiling tiles — and start to grow. In a city of aging, densely packed buildings, that happens more often than most people realize.
How mold grows indoors
Mold needs three things: spores (always present), food (most building materials), and moisture. Moisture is the only one you can control. In NYC, it usually comes from plumbing leaks, roof and facade leaks, condensation from AC units, and poorly ventilated bathrooms.
Why it's a health concern
Mold spores and fragments are part of indoor air pollution. They can trigger allergies, asthma attacks, sinus problems, headaches, and fatigue — especially for children, older adults, and people with respiratory conditions.
Why it damages buildings
Mold digests the materials it grows on. Over time it weakens drywall, wood framing, and finishes, and leads to costly repairs — often across more than one apartment in a shared building.
Detection and control
The key is finding the moisture source. A professional inspection uses moisture meters, thermal imaging, and lab-analyzed samples to confirm what's growing and why.
**Questions about mold?** HBH serves Manhattan, Brooklyn, Queens, the Bronx, and Staten Island. Call or text (631) 774-6502.
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