Key Steps for Addressing Mold and Moisture to Maintain Indoor Air Quality
Addressing mold and moisture issues involves identifying water entry points, as mold growth, which affects air quality, requires moisture, nutrients, and suitable temperatures.
- By Teri Silver
- Apr 01, 2024
Even the cleanest homes and businesses can have stale, musty odors that affect air quality. Key steps for addressing mold and moisture problems start with identifying where water gets in.
Tiny mold spores travel through the air. They need three things to grow: moisture, nutrients and the right temperature. If a building has mold inside, there is moisture coming in from somewhere.
Mold Sources
Recognizing and controlling mold-producing moisture sounds easy, but mold is a challenge, especially in older houses and buildings. Common household problems that bring mold into the structure include:
- Leaking pipes or plumbing fixtures
- Roof leaks
- Flooding
- Indoor humidity condensation
- Animal urine
- Air conditioning leaks
- Indoor showers
Prevent mold by drying off any water-soaked and damaged areas within 24 to 48 hours.
One thing to note: mold is different from mildew. Mildew is white or gray and grows flat with a powdery surface. Mold is fuzzy, slimy and slightly raised on its growing surface. Mold colors come in black, gray, green, brown, dark red and a few other shades.
Air Ducts
Vents and air ducts guide a building’s heat and air conditioning systems. Dampness and mold affect filters and hoses. Mold in air ducts often looks like black spots near the AC vents. Do not touch them — these spores will spread.
Mold has an odor that’s hard to ignore, but types of mold smell differently. For example, black mold smells like rotting leaves, and green mold has a musty odor. Trust the nose. If the smell is strange, it’s time to change the vent filters and clean the duct system.
Preventing Mold in Air Ducts
Here are a few ways to prevent indoor mold:
Ventilate indoor spaces to keep them dry. Dehumidifiers are great for bathrooms. Operate the moisture-drawing ceiling ventilation fan during showers and baths or open a window to clear the steamy fog. Additionally, be sure to:
- Fix water leaks.
- Keep indoor humidity below 50 percent.
- Towel or air-dry damp fixtures, shower doors and floors after bathing.
- Change air filters regularly.
- Insulate air ducts.
- Clean and dry drip pans.