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Moisture in Crawl Space

Moisture in Crawl Space

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Moisture in Crawl Space – What It Means and Why You Should Act Fast

If you’ve noticed damp smells, soft flooring, or musty air inside your home, the issue could be hidden beneath your feet. Moisture in the crawl space is one of the most common — and most overlooked — threats to a home’s health and structure. A high moisture level below your home can quickly lead to mold, rot, pests, and expensive damage if not properly addressed.

Force Basements helps homeowners stop crawl space moisture at the source with proven solutions tailored to your home’s unique needs.

What Causes Moisture in the Crawl Space?

A high moisture level in your crawl space often stems from external and internal conditions working against your foundation. Common causes include:

  • Groundwater seepage or poor exterior drainage

  • Lack of vapor barrier or improper installation

  • Open or unsealed crawl space vents

  • Plumbing leaks or condensation from ductwork

  • No dehumidifier or moisture control system

  • Seasonal humidity or high local water tables

Once moisture builds up, it spreads quickly — putting your air quality and home structure at risk.

Why You Shouldn’t Ignore High Moisture Levels in Your Crawl Space

Excessive moisture in the crawl space can spread into your subfloor, living space, and ductwork. Ignoring it leads to:

  • Mold and mildew growth

  • Structural wood rot

  • Sagging or soft floors

  • Increased utility bills from poor energy efficiency

  • Musty odors and reduced air quality

  • Termites, rodents, and other pests

  • Lower resale value and expensive long-term repairs

How Force Basements Fixes High Moisture in Crawl Spaces

We use proven strategies to lower humidity and prevent future problems caused by moisture in the crawl space:

We solve moisture issues at the root — not just treat symptoms.

Other Issues You Might Be Facing

FAQs About Crawl Space Moisture & High Humidity

Is it normal to have some moisture in my crawl space?
A small amount may not seem like a big deal, but any high moisture level over time can lead to structural damage and mold.

What’s considered a high moisture level in a crawl space?
Anything over 60% relative humidity is too high and can lead to mold growth and wood rot. We aim to keep it closer to 50% or less.

Can a dehumidifier fix crawl space moisture on its own?
It helps, but best results come when combined with sealing (vapor barrier or encapsulation) and proper drainage.

Take Control of Moisture Before It Takes Over

If you’re noticing signs of moisture in your crawl space or a high moisture level is causing mold and damage, don’t wait. Force Basements offers free inspections and complete moisture control solutions to keep your home dry and safe.

Service Area

Force Basements proudly provides basement waterproofing, foundation repair, crawl space services, concrete repair and egress window installation to homes and businesses in Peoria, Bloomington, Champaign, Springfield, the Quad Cities, Decatur, Quincy, LaSalle/Peru and surrounding communities.