Conditioned Crawl Space Northern VA

Conditioned Crawl SpaceIn our experience, there are occasions where a vapor barrier (crawl space encapsulation) isn’t sufficient in combating moist air that develops in crawl spaces. A conditioned crawl space option is available as another value-added service provided by Foundation Medix in conjunction with our other foundation repair services.

There are conditions in which the crawl space vents that were up to code years ago hurt rather than helped in keeping a crawl space dry. Recent studies suggest that venting your crawl space year round is no longer beneficial for homes in certain geographical areas. In fact, it can have a negative effect on crawl space humidity levels and your home’s energy efficiency. Neglecting a crawl space that has humidity issues will only lead to mold growth and wood rot, which in turn invites wood-boring insects. These problems create more serious problems. When you are addressing the health and safety of your home, turning a blind eye isn’t an option.

Newly constructed homes are often built with the option for vented or unvented crawl spaces. However, homeowners with existing vented crawl spaces are often advised to close off those vents. Think of it along the lines of leaving a window open year round, exposing you to heat in the summer and cold in the winter. Leaving these vents open allows for cold floors in the winter and hot living spaces in the summer. It is important to work with a reputable foundation repair expert such as Foundation Medix. We keep up to date on local codes and will determine the best possible option for your home.


A conditioned crawl space, as the name implies, requires that the temperature within the crawl space be maintained just like the other rooms of your home. Existing crawl space vents are often blocked off with styrofoam blocks. The actual product used will be determined by the type of vents that exist.

We can condition the crawl space air by connecting a vent from your HVAC system to the crawl space. This way, fresh air will constantly be entering your crawl space, creating healthy air flow. If your home's ductwork is located in the crawl space, a tap can easily be made in the existing duct. Other methods are used if your home's ductwork isn’t located in the crawl space.

It may also be necessary to use a dehumidifier as part of the conditioned crawl space process to remove any existing humid air.


Interested in learning more about a conditioned crawl space, Foundation Medix, or the foundation repair services we provide? Call our office at 877-740-9206 or contact us for all your foundation and basement structural issues. We are foundation repair experts!

Serving Virginia and the District of Columbia with offices in Alexandria, Fredericksburg, and Richmond, Virginia.

Foundation Cracks

If your house is the victim of a cracked foundation, Foundation Medix can quickly and accurately diagnose the underlying problem.

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Egress Windows

An egress window is required in specific locations in a dwelling and is intended to provide an emergency means of exiting a dwelling.

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Basement Waterproofing

Having your basement waterproofed by Foundation Medix will help to ensure the continued maintenance of your home's structural integrity.

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Moisture inside of a crawl space is the source of many problems. Foundation Medix can dry out your moist air by installing a SaniDry dehumidifier.

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