Homeowner’s Corner: Encapsulating a Crawl Space

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Homeowner’s Corner: Encapsulating a Crawl Space

Homeowner’s Corner: Encapsulating a Crawl Space
Aug 10, 2019

Crawl spaces are often the most neglected parts of homes. Homeowners don’t like visiting them, neither do they like spending money on their maintenance. But when you consider the fact that up to 50% of household air flows up from the crawl space and almost all cases of residential mold contamination or rodent infestations are initially triggered by crawl space conditions, it makes the ignorance on our part look quite bad.

The goal for all homeowners should then be to create a crawl space that’s dry, clean, efficient and healthy.

How can you create such a crawl space?

Simple; by encapsulating it.

Crawl Space Encapsulation

When we talk about encapsulating a crawl space, the process entails three areas of focus:

  1. Controlling water and humidity in the crawl space
  2. Preventing mold growth, bug infestation and rodent intrusion inside the crawl space
  3. Making the crawl space energy efficient

Water in a crawl space is primarily controlled by installing an effective water vapor barrier across the surface and inside the walls of the crawl space. This water vapor barrier is typically made of heavy-duty polyethylene, which absorbs any water released from the foundation soil or the outside ground. Additionally, homeowners may choose to install sump pumps that pump out any standing water, which may find its way inside a crawl space after a flooding incident.

To control humidity, ventilation or dehumidifying solutions are used. These include crawl space fans, air vents and dehumidifiers. Regulating humidity inside a crawl space also helps prevent mold growth, as dampness—the main contributing factor for mold growth—is virtually eliminated.

Bug infestation and rodent intrusion is prevented by installing crawl space doors and plugging any gaps or holes in crawl space walls through which the critters might enter.

Finally, to make a crawl space energy efficient, insulation is installed over crawl space walls and crawl space vents are sealed.


When properly encapsulated, a crawl space can offer the perfect conditions for maintaining healthy indoors and preventing structural defects.

At Crawl Space Door Store, we sell the complete range of encapsulation solutions for your crawl space. From vapor barriers to sump pumps to crawl space doors, you can find everything here. Visit our online store today to learn more.

  • Better Business Bureau Accredited Business
  • International Code Council Member
  • Tidewater Builders Association Member
  • Tidewater Builders Association Green Council Member

Why buy a crawl space door, flood vent,
air vent, or portable fan system?

  • Save Money

    Save Money

    Save money on your utility bill with our ventilation, door, fan and vent cover products. You can save money on your flood insurance premiums with our FEMA compliant flood vent.

  • Protect Your Home

    Protect Your Home

    Moisture in the crawl space rots the wood under your home. Reduce the moisture in your crawl space with our crawl space doors, louvers, flood vents and portable exhaust fans.

  • Protect Your Family

    Protect Your Family

    A damp crawl space is unhealthy. Mold thrives in damp areas causing millions of airborne mold spores to enter your home. Toxic mold spores can be deadly to children and those with allergies and COPD.

  • Save Energy

    Save Energy

    Use our crawl space air vents and doors to ventilate your crawl space with natural air flow or forced air with our energy efficient exhaust and portable fans.

  • Save The Environment

    Save The Environment

    Reducing the moisture in your crawl space reduces mold that releases airborne mold spores into the environment.

  • Green Crawl Space

    Green Crawl Space

    Ventilate your crawl space with natural air flow with our crawl space air vents, louvers, and exhaust fans.

Check out our crawl space videos