Mold Vs. Mildew: Do You Know The Difference?

Mold and mildew are both fungi that thrive in moist environments like bathrooms, basements, and around leaks. Though often confused, they differ in appearance, growth behavior, risk level, and how they should be removed.

mold vs mildew

Feature Mold Mildew
Texture Slimy or fuzzy Dry, powdery or fluffy
Color Black, green, brown, red, orange, etc. White, gray, light green, or brown
Growth Pattern Grows deep into surfaces (porous materials) Surface-level growth
Health Risk Moderate to severe Mild to moderate
Odor Musty, pungent, earthy Musty, sour, less intense
Cleaning Difficulty Harder to remove; may require professionals Easier to clean with household solutions
Common Areas Walls, ceilings, insulation, carpets Shower walls, windowsills, damp fabrics
Damage Can cause structural damage Rarely causes structural damage

Mold

Mold is a multicellular fungus that grows into surfaces through root-like filaments called hyphae. It appears in many colors black, green, orange, pink, and more.

Some types, like black mold (Stachybotrys chartarum), produce harmful toxins linked to respiratory and neurological issues.

It thrives on damp materials like drywall, wood, insulation, and carpet, spreading in dark, poorly ventilated spaces where moisture is present.

Mildew

Mildew is a surface-level fungus with a flat, powdery look. It’s usually white, gray, or light brown.

It’s less harmful than mold but can still trigger mild allergic reactions.

Common in moist areas like showers, kitchens, and laundry rooms, mildew appears as dusty or chalky spots on hard surfaces or fabrics.

Can You Identify Mold Type by Color?

No. While mold can appear in many colors, color alone doesn’t determine the species or risk level. Mold appearance changes based on moisture, light, food source, and age. Only lab testing or a certified inspector can confirm the type.

When to Worry

Call a professional if:

  • The mold covers more than 10 sq. ft.
  • It’s growing inside HVAC systems or walls
  • You suspect black mold or are experiencing health symptoms

DIY Cleaning Guidelines

Wear protection: Gloves, mask, and goggles.

Safe options:

  • Hydrogen peroxide (3%): Spray and wait 10–15 min, scrub, rinse, dry.
  • White vinegar: Undiluted spray, sit, scrub, rinse, dry.
  • Bleach (1:3 with water): Effective but less surface-penetrating than vinegar.

Prevention Tips

  • Fix leaks quickly
  • Ventilate high-moisture rooms
  • Run dehumidifiers in basements or humid zones
  • Clean damp areas regularly
  • Ensure bathroom and kitchen exhaust fans are functional

The post Mold Vs. Mildew: Do You Know The Difference? appeared first on Homedit.



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