Will a Crawl Space Dry Out on Its Own?

Will a Crawl Space Dry Out on Its Own?

Homeownership is a big responsibility. It becomes even more challenging when your house sits on a crawl space. Although these spaces can be useful, they have numerous drawbacks and challenges. 


Wet crawl spaces can cause problems for your home and your family. A damp crawl space can negatively impact your health and the structural integrity of your house. That’s why it’s crucial to keep your crawl space dry and in good condition with a secure door. 


Why Does a Crawl Space Get Wet? 

Even with a proper crawl space door, the area under your house can still get wet. Often, dampness is due to a combination of groundwater and air moisture. However, many things may cause your crawl space to become damp.  

  • Leaky windows 
  • Overflowing gutters 
  • Heavy rainfall 
  • Plumbing leaks 


Crawl space moisture is common, so experts have developed many effective methods for drying out these spaces. However, a crawl space will not dry out on its own.    


Why Won’t a Crawl Space Dry on Its Own?  

A crawl space won’t completely dry on its own because the water can take a long time to evaporate or be absorbed by the soil.  


Sometimes, moisture in a crawl space is caused by something that won’t be a recurring issue. However, most homeowners' problems will only worsen, so it’s vital to address the issue promptly. Luckily, there are several ways to speed up the drying process.  


Remove Standing Water 

Your crawl space may have standing water if you’ve recently experienced a flood or heavy rainfall. Use a pump or wet/dry shop vac to remove excess water.  


Add Warm, Moving Air 

Put a low heat source near the crawl space, such as a light bulb. You can try setting up fans to force air over the wet areas, but it’s important to note that some experts believe that fans only move air around and don’t alter moisture levels. 



You can install a permanent dehumidifier under your home by having electrical wiring run to your breaker box. Some homeowners choose to install a temporary one instead. Either way, the dehumidifier will work to remove excess moisture from your crawl space. Installing a permanent dehumidifier may prevent moisture from building up again. 


How Long Does It Take to Dry Out a Wet Crawl Space? 

How long it will take to dry out your wet crawl space depends on the extent of the moisture. It could take a few hours or several weeks to return it to its normal condition. Adding warmth and airflow to the area can expedite the drying process and prevent permanent damage.  


How to Prevent Your Crawl Space From Becoming Damp 

Limiting how much water enters your crawl space is the best way to protect it. Assess the area and identify any ways moisture could get in. Aside from heavy rains and flooding, you can prevent most water sources from entering the enclosed area. 


Gutters and Downspouts 

Rainwater can’t be directed away from your house when your gutters are full of debris. Water will pool near the foundation and eventually seep into the crawl space.  


Routinely clean your gutters to ensure they are clear of debris and verify that downspouts are pointed in the correct direction. This regular maintenance will distribute water away from your crawl space.  


Exposed Holes or Cracks 

Cracks and holes in your foundation are easy access points for water. Windows and vents with worn seals and broken glass are also potential entry points. Check these areas and call for repairs to your foundation or replace the seals on your windows. 


Yard Grading    

When rainwater pounds away at your yard for years, it can create sunken areas. Sometimes, animals are responsible for creating holes. If holes and indentations develop near your home’s foundation, you'll want to regrade the yard. Otherwise, water will continue to puddle and force its way into your crawl space.  



Certain types of insulation are more effective at maintaining a dry crawl space. You have a range of options for insulating the area, but check with the installation team to verify that your choice won’t hold moisture and create a breeding ground for mold.  


Ventilation Fan 

A ventilation fan helps push humid air outside. This movement prevents moisture from accumulating under your house, reducing the risk of pest infestations and mold growth.  


Unfortunately, installing a ventilation fan is not a standalone solution. You may need additional methods to prevent moisture buildup.      


Crawl Space Door 

Installing a quality crawl space door at the entry point will help prevent moisture from entering. These barriers may also prevent streams of water from funneling into your crawl space during heavy rainfall. Without this moisture inside your crawl space, it will be less prone to damage.  


Do You Need a Crawl Space Door for Added Protection? 

Adding a crawl space door to your crawl space has many valuable benefits besides protection against moisture. However, not all doors are made the same. Invest in a quality door from Cathmer Crawl Space Door. Start your order today! 

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