My Mold Expert

Prevention and Humidity Control

Bathroom Fan Venting Mistakes: Why They Cause Mold (And What to Do Next)

Bathroom humidity is one of the most common drivers of mold—especially when exhaust fans are vented incorrectly or used inconsistently. Learn the most common venting mistakes, how to recognize them, and the highest-ROI next steps. … Read More

Crawlspace Moisture Control: Encapsulation vs Vapor Barrier vs Dehumidifier (Mold Risk)

Crawlspaces stay damp for predictable reasons—and that dampness can support mold in framing and subfloor materials. This decision-level guide explains the three main options (vapor barrier, full encapsulation, dehumidifier/conditioning) and when each one is the right call. … Read More

Condensation on Windows: Mold Risk, Causes, and Fast Fixes

Condensation on Windows: Mold Risk, Causes, and Fast Fixes Condensation on windows is not automatically “mold,” but it is a moisture signal—and repeated condensation can create the damp conditions that support mold growth around window frames, sills, trim, and nearby … Read More

Ideal Indoor Humidity for Mold Prevention (Season-by-Season Targets That Are Realistic)

Humidity control is one of the most overlooked mold drivers. This guide explains realistic indoor humidity targets by season, how to tell when you’re too high, and what to do next to prevent mold and musty odors. … Read More

Basement Dehumidifier Sizing: What Capacity You Actually Need (To Prevent Mold)

Basement Dehumidifier Sizing: What Capacity You Actually Need (To Prevent Mold) A basement can stay humid enough to support mold growth even when there’s no visible water. If you’ve noticed a musty smell, damp-feeling air, condensation, or recurring “basement odor,” … Read More

AC Mold Smell: Coils, Drain Lines, and Duct Moisture—What’s Real

A musty AC smell doesn’t always mean “mold in the ducts.” Learn the real causes (coil moisture, drain issues, microbial film, humidity), the warning signs that matter, and the best next steps to reduce mold risk. … Read More