Black Mold vs Mildew: What’s the Difference?

TL;DR

Black mold and mildew might look similar, but black mold is far more dangerous, producing toxic spores that can affect your health and damage your home’s structure. Mildew is easier to clean, but mould always needs professional attention if it spreads or returns.

How to Tell the Difference Between Black Mold and Mildew

Colour: Mildew is light (white or grey), while black mold is dark green or black.

Texture: Mildew is flat and powdery; black mold looks slimy and patchy.

Smell: Black mold produces a musty odour; mildew has a mild, stale scent.

Growth pattern: Mildew stays on the surface; black mold penetrates deep into walls and materials.

When to Take Action

If you notice dark patches spreading quickly or a persistent musty odour, it’s likely black mold — and that’s when professional help is essential.

If you live in Greater Vancouver, the Fraser Valley, or the Sea-to-Sky Corridor, and suspect black mold at home, contact Masters Remediation for a professional mould inspection. Our team performs air quality and surface testing to identify contamination accurately before removal.

The Risks of Ignoring Black Mold

Ignoring black mold can cause respiratory issues, chronic fatigue, skin irritation, and property damage. If you’ve recently dealt with water leaks or flooding, hidden mold could already be spreading behind your walls or insulation.

To address both causes and consequences, we also offer water damage restoration and attic remediation to prevent mould recurrence.

Breathe Clean Again with Masters Remediation

If you’ve found black mold or mildew in your home, it’s crucial to act quickly. Masters Remediation offers certified black mold removal and mould testing across Vancouver, Surrey, Coquitlam, Richmond, Abbotsford, and Chilliwack.

Call us at (604) 838-0090 or email info@mastersremediation.ca to schedule your inspection today.
We’ll restore your home’s safety and ensure clean, breathable air for your family.

FAQs About Black Mold and Mildew

1. How do I know if it’s black mold or mildew?
Black mold is darker, thicker, and slimy, while mildew is lighter and flat. A professional inspection can confirm which it is.

2. Can I clean black mold myself?
No. Household cleaners only remove surface spores. Professional removal is necessary to eliminate hidden growth.

3. What causes black mold to grow?
Moisture from leaks, condensation, or poor ventilation.

4. Is mildew dangerous?
While less harmful than black mold, it can worsen allergies and spread if not cleaned properly.

5. Does insurance cover black mold removal?
Some policies cover mould from sudden water damage, but not long-term neglect.