While the process isn't standard everywhere, there are notable similarities when encapsulating crawl space properly. Encapsulation can be summarized in four steps below:

I. Preparation

It’s advisable to seek professional crawl space encapsulation services to ascertain your crawl space is suitable for encapsulation.

Before crawl space is encapsulated, the debris, sharp objects, and other items that can rapture the heavy-duty polyethylene plastic insulation must be removed.

The preparation step also involves raking and leveling the soil in the crawl space, if any as well as adding an access door and treating the crawl space for mold and mildew.

II. Sealing

After removing debris and leveling, any openings like vents and pipes that can draw external air are sealed. The process is done to keep unwanted outdoor air from entering the crawl space and altering the humidity levels. Foam insulation should also be installed on walls.

III. Installing Plastic Polyethylene Vapor Barrier

Once all vents are sealed, the polyethylene vapor barrier can be added to the floor and walls.

Precaution: For the best result, the barrier has to be 6mm or more in thickness. The barrier should also be fastened properly. Ideally, 20-mm thick vapor barrier with added thickness at the seams is capable of withstanding regular inspection done in crawl spaces. The barrier should also have an ideal permeability rating i.e., (0.1 or below), to keep moisture from passing through and getting into the crawl space.

IV. Install a Dehumidifier Among Other Useful Equipment

While this step isn't mandatory, it is advisable to install a dehumidifier to monitor crawl space humidity levels at all times. A sump pump may be necessary for proper drainage if you live in a flood-prone area.

Benefits of Protecting the Home's Foundation and the Indoor Air Quality Due to Moisture Control Problems

There are valid reasons why people go through the trouble of seeking professional crawl space encapsulation services. The top benefits of this service include;

a. Better Indoor Air Quality

Encapsulation deals with mold and pest infestation. It also ensures humid outdoor air doesn’t alter indoor conditions. The result is constant clean air circulation in the home and healthy living. Unsealed crawl spaces are constant sources of moisture and resulting problems like bad odors from mold and pest infestation.

b. Eliminates Mold and Insect Infestation

When crawl space is completely sealed from moisture, the conditions for mold and insect infestations no longer exist. In fact, it is impossible to get rid of infestation when you still have an open crawl space.

c. Comfortable Indoors

Getting rid of moisture and related problems like infestation improves indoor comfort. With a dehumidifier monitoring humidity in the crawl space, you can rest assured you are living in optimal indoor conditions.

d. Structural Integrity Benefits

Mold, insect, and pest infestation compromise the structural integrity of a home as they need organic matter and water to thrive. Pests and mold can destroy a home's foundation by feeding on foundation materials like wood. Water/moisture also weakens even the strongest concrete foundations over time. Crawl space encapsulation eliminates chances of water damage and related problems known to damage foundations.

e. Improved Energy Efficiency

When you control conditions in your crawl space, you don't have to run your HVAC for long to maintain comfortable indoor temperature. A lot of air enters homes through cracks and openings in crawl spaces. Humidity also penetrates and enters indoors from the crawl space creating a need for indoor heating, ventilation & air conditioning equipment to run over time.

By insulating the crawl space, your home instantly becomes more energy efficient. Encapsulation is bound to lower your monthly energy bills significantly. In fact, the service is bound to pay for itself in the form of energy savings.