Dealing with moisture problems in crawl spaces

Ben Ilciuc • July 10, 2024

Why Moisture Control is Important

Moisture control within crawl spaces is fundamental to the overall integrity and air quality of a home. Excessive moisture can result in mold and mildew, which can compromise the air you breathe. Furthermore, high humidity levels can cause wood to rot, insulation to degrade, and metal to rust, leading to significant structural damage. It also affects energy efficiency, as properly insulated crawl spaces help keep energy costs down by stabilizing indoor temperatures. Preventing excess moisture protects not only the structural aspects of a home but also contributes to a healthier indoor environment.

Methods for Controlling Moisture

Crawl space maintenance involves several strategies to manage moisture effectively:

Vapor Barriers

Laying a vapor barrier across the crawl space floor prevents moisture from the ground from infiltrating the area.

Cral Space Encapsulation

This advanced method goes beyond vapor barriers, sealing the entire crawl space with a combination of heavy-duty moisture barriers, proper insulation, and, frequently, climate control systems such as dehumidifiers. A complete encapsulation project seals the crawl space from outside air, keeping the space dry and improving overall air quality.

Proper Insulation

Installing insulation such as spray foam on foundation walls and crawl space floors helps maintain a consistent temperature and reduces humidity levels.

Ventilation & Dehumidification

Ensuring that crawl space vents are open and unobstructed to promote air circulation or using dehumidifiers to reduce humidity levels.

Drainage Solutions

Implementing systems such as French drains, gutter extensions, and grading adjustments to direct water away from the foundation and prevent it from entering the crawl space.

Annual Inspections

Regularly scheduled crawl space inspections can detect early signs of moisture issues or foundation cracks.

By applying these measures, homeowners can mitigate the risks of crawl space moisture and maintain a healthy living environment while potentially reducing energy costs.


Call the experts at Radone gone to help maintaining your home’s air quality, humidity level and energy efficiency.

A basement with a lot of pipes and insulation on the ceiling.
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