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The Hidden Dangers of Water Damage: Mold, Mildew, and Health Risks

Know the dangers of mold and mildew growth after water damage—and what to do about it.

You are here: Home / Blog / The Hidden Dangers of Water Damage: Mold, Mildew, and Health Risks

July 16, 2025 by

Nobody likes having mold or mildew in their home, but these pervasive fungi are more than just a hassle. They can also pose significant health risks. It’s essential to know the causes and consequences of mold and mildew growth so that you can take action to protect your home and family.

Moldy corner of house

Delayed Dangers of Water Damage

If your home or basement experiences water damage, the cleanup process can be intense. From removing damaged belongings and fixtures to drying out the space, there’s a lot of work to do. It’s critical to see the job through, though, because any remaining moisture can create a breeding ground for mold and mildew.

Mold and mildew spores become active only in certain conditions—when moisture is present and when the temperature reaches a suitable level, usually about 65°. They thrive in dark environments with minimal ventilation and can quickly multiply and spread once activated.

Entirely removing all excess water after a flood, leak, or storm can be incredibly challenging, as it is often difficult to determine when an area is truly dry. That’s why it’s so easy for mold and mildew to take hold after water damage.

Where Does Mold and Mildew Grow?

Spores can grow anywhere water is present, even if it’s only a tiny amount. Often, mold and mildew grow out of sight. Spores can thrive in locations such as:

  • Under carpet or flooring
  • Beneath wallpaper
  • Behind appliances
  • Under sinks and cabinets
  • In basements and crawlspaces

Sometimes, you might be able to smell the presence of these fungi, but often there’s no immediate sign that you have a mold or mildew problem.

Health Consequences of Mold and Mildew Growth

Having mold or mildew in your home might not seem like a significant problem at first, but it is. These fungi can cause numerous health issues in your household. Mold and mildew growth can also quickly escalate, amplifying the danger to your family.

Some common health concerns caused by mold or mildew exposure include:

  • Headache
  • Skin irritation
  • Fatigue
  • Allergic reaction
  • Sneezing
  • Itchy eyes
  • Runny nose
  • Coughing
  • Wheezing
  • Shortness of breath

These symptoms can intensify with prolonged exposure, further compromising an individual’s health and depressing the immune system.

For individuals with preexisting medical conditions such as asthma or other respiratory issues, exposure to mold or mildew can be life-threatening. Spores can set off major exacerbations requiring medical intervention and even hospitalization.

The same is true for people with compromised immune systems. Mold and mildew spores can intensify existing problems and lead to dangerous infections and other complications.

Avoiding the Dangers of Mold and Mildew

If your home has experienced water damage, it’s essential to address the immediate situation and also take preventive action. You can contact your local waterproofing contractor for guidance and assistance. They can help identify the full cause of the water damage and recommend a waterproofing process to keep it from happening again.

If you need help with home or basement waterproofing in Rochester or the region, call BelowDry Basement Waterproofing today. We’re a local, family-owned waterproofing company dedicated to helping residents keep their homes safe and healthy. With over 15 years of experience, you can count on BelowDry Basement Waterproofing to provide comprehensive waterproofing solutions and exceptional customer service. We are licensed and insured for your peace of mind, and we’re here for you 24/7 to provide emergency service. BelowDry Basement Waterproofing—Solving Your Wet Basement Problem For Good!

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Basement Waterproofing Services

  • Basement Waterproofing
  • Crawlspace Waterproofing
  • Drainage System Installation
  • Foundation Crack Repair
  • Foundation Waterproofing
  • Sump Pump Install and Repair
  • AprilAire Dehumidifiers
  • Basement Flooding
  • Helical Pier Installation
  • Foundation Repair Buffalo
  • Basement Waterproofing Buffalo

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