Key takeaways
- Mold generally grows when humidity stays above about 60 percent
- Many aim for a range in the 40s to 50s percent
- A hygrometer and a monitor show the trend
- A dehumidifier holds a sealed space steady
Humidity is the number behind most crawl space problems.
The threshold
Mold generally grows when humidity stays above about 60 percent for long periods.
The target
Many aim for the 40s to 50s percent in a sealed space.
Tracking it
A simple hygrometer or a wireless monitor shows how the space behaves across seasons.
Holding it
A sealed barrier and a dehumidifier keep humidity steady.
Related services
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