Mold vs. Mildew After a Flood: What Homeowners Should Know
After a flood or water damage, you might start noticing discoloration, damp smells, or strange growths on your walls or floors. But is it mold or mildew? While both are types of fungi, knowing the difference can help you act faster — and avoid major damage.
At Vivid Water Damage & Restoration, we help homeowners across Salt Lake City, Midvale, and Murray understand and prevent the risks of mold and mildew after flooding. Here’s how to tell them apart.
🔍 Mold vs. Mildew: What’s the Difference?
| Feature | Mold | Mildew |
|---|---|---|
| Appearance | Fuzzy or slimy, green/black/blue | Powdery or flat, gray/white |
| Smell | Strong musty odor | Mild, slightly musty |
| Surface | Penetrates porous materials | Stays on surface |
| Health Risks | Allergies, asthma, infections | Minimal, mild irritation |
| Spreads | Quickly, especially in humid areas | Slower, easier to clean |
🧱 Where Do Mold and Mildew Grow After a Flood?
Both can grow in similar places, including:
- Basements and crawl spaces
- Drywall, ceilings, and insulation
- Underneath carpets and rugs
- Furniture and fabrics
→ Related: Musty Smells and Mold: What They Mean
⚠️ Health Risks to Watch For
While mildew is mostly cosmetic, mold can trigger:
- Persistent coughing and sneezing
- Worsening asthma or lung issues
- Skin irritation and headaches
Pro Tip: If you’re experiencing health issues or the growth is spreading fast, it’s best to have a professional inspection.
🛠️ How We Handle Mold and Mildew After a Flood
Our process ensures both issues are addressed completely:
- Moisture detection using thermal imaging cameras
- Water extraction with commercial equipment
- Drying and dehumidification using dehumidifiers and air movers
- Surface treatment with mold inhibitors
- Odor removal using air scrubbers
→ Learn more: Our Mold Prevention Process
📍 Serving Flood-Prone Areas Across Salt Lake County
We’re available 24/7 in:
📞 Mold or Mildew After a Flood? Call Vivid Today
Don’t wait to find out which one you’re dealing with. We offer fast, reliable inspections and expert cleanup services for both mold and mildew.
Call 385-289-3885 or request a free post-flood inspection today.

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