How Do I Get Rid of Humidity Under House?

To address humidity under your house, especially if you have a crawl space or basement, you can follow these steps to prevent moisture from accumulating:

 

1. Improve Ventilation

Install Vents: Add or open existing vents around your crawl space or basement to improve airflow.

Use Vent Fans: If natural ventilation is insufficient, install vent fans to circulate air and reduce humidity.

 

2. Seal Off Sources of Water

Repair Leaks: Check pipes and seals for leaks, and repair them to prevent water from entering.

Direct Downspouts Away: Ensure downspouts extend away from the foundation to avoid pooling water near the house.

 

3. Install a Vapor Barrier

Plastic Sheeting: Place a heavy-duty plastic sheeting (at least 6-mil thickness) over the dirt floor of a crawl space to act as a moisture barrier.

Seal the Edges: Secure the edges to walls or pillars to ensure full coverage.

 

4. Use a HVAC Dehumidifier

Install a Crawl Space Dehumidifier: Set up an under house dehumidifier specifically designed for crawl spaces to regulate moisture levels.

Monitor Humidity Levels: Keep humidity under 60%, ideally between 30-50%, to discourage mold growth.

PREAIR is a reliable dehumidifier manufacturer in China. If you need top crawl space dehumidifiers, please contact us immediately.

 

5. Consider Encapsulation

Encapsulation involves sealing the entire crawl space with a vapor barrier on walls, floors, and often ceiling areas, transforming it into a conditioned space. It can be costly but provides lasting protection against humidity and mold.

 

Taking these steps can reduce humidity under your house and improve indoor air quality.