Mold Prevention & Remediation: Moisture Control Is the Key

Mold spores are everywhere. They only become a problem when moisture allows growth. Common indoor molds—Cladosporium, Penicillium, Aspergillus, Alternaria—thrive on damp drywall, wood, carpet, dust, and fabric.

Health Effects Range Widely

• Allergic: sneezing, itchy eyes, skin rash, asthma triggers
• Toxic (mycotoxins): headaches, fatigue, immune suppression, neurocognitive symptoms
• Invasive infections: in immunocompromised individuals
• Black mold (Stachybotrys) produces potent trichothecenes—requires professional handling

Moisture Sources to Eliminate

• Roof leaks, flashing failures
• Plumbing leaks, condensation
• Poor bathroom/kitchen ventilation
• Basement/crawl space humidity >60%
• Flooding, drainage issues
• HVAC overflow, humidifier overuse

DIY for Small Areas (<10 sq ft, Non-Porous)

• Fix moisture source FIRST
• Scrub with detergent, vinegar, or hydrogen peroxide
• HEPA vacuum after drying
• Discard porous materials (carpet, ceiling tile, drywall) if moldy
• Wear N95, gloves, goggles

When to Call San Francisco Mold Pros

• Large or hidden growth
• HVAC contamination
• Black mold suspected
• Health symptoms
• Post-flood remediation
• Real estate transactions requiring clearance

Prevention is simple: control humidity (30–50%), fix leaks fast, ventilate, inspect regularly. Dry wet areas within 24–48 hours.