Protect Your Home from Ground Moisture

Crawl space encapsulation to control humidity, improve air quality, and prevent structural damage

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When your crawl space is open to the ground, moisture from the soil evaporates into the air and rises through your floors, bringing humidity, odors, and the conditions mold needs to grow. Encapsulation seals the crawl space with a heavy-duty vapor barrier that covers the floor and walls, cutting off the source of moisture and creating a controlled environment beneath your home. Allied Water Services installs vapor barriers, drainage systems, and dehumidification equipment that work together to keep the space dry year-round.

The process involves clearing debris, grading the soil for drainage, and laying thick polyethylene sheeting that is sealed at the seams and anchored to the foundation walls. We also address standing water or drainage issues before installing the barrier, ensuring the system works as intended. Once the space is sealed, you will notice improved air quality upstairs, lower energy bills, and less moisture-related damage to floor joists and insulation.

If your crawl space is damp, musty, or showing signs of mold, reach out to discuss an encapsulation plan that fits your home.

What's Included in This Service

We begin by inspecting the crawl space for standing water, drainage problems, and structural issues that need to be addressed before encapsulation. If water is pooling, we install a drainage system or sump pump to remove it. The ground is graded to promote flow toward drains, and any large rocks or debris are removed to create a smooth surface for the vapor barrier.

After the barrier is installed, the space becomes noticeably drier, and the air in your home smells cleaner because moisture is no longer seeping up through the floorboards. Allied Water Services uses reinforced vapor barriers that resist punctures and tears, and we seal all seams with waterproof tape to prevent gaps. Insulation can be added to walls if needed, and vents are sealed to keep outside humidity from entering.

We recommend pairing encapsulation with a crawl space dehumidifier in areas with high humidity, as the barrier alone does not remove moisture that is already in the air. This service does not include pest control or structural repairs to damaged joists, though those issues are often identified during the inspection. The result is a crawl space that stays dry, reduces heating and cooling costs, and protects the structural wood in your home.

These questions cover the concerns homeowners have when considering crawl space encapsulation.

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Why Locals Choose This Option

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● Why Locals Choose This Option ●

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What does a vapor barrier actually do?

A vapor barrier blocks moisture from the soil from evaporating into the crawl space air. It is sealed to the foundation walls and overlapped at seams to create a continuous barrier that keeps the space dry and prevents mold growth.
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How long does encapsulation take?
Most crawl space encapsulations are completed in one to two days, depending on the size of the space and whether drainage work is needed. Larger crawl spaces or those with standing water may take longer.
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Will encapsulation lower my energy bills?
Yes, sealing the crawl space reduces the amount of humid air entering your home, which makes your heating and cooling systems work less to maintain temperature. You may also see lower humidity levels on upper floors.
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What happens to water that is already in the crawl space?
We remove standing water and install drainage systems or sump pumps to handle any water that enters after encapsulation. The vapor barrier prevents new moisture from entering, but it does not remove water that is already present.
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Can I store items in an encapsulated crawl space?
Yes, once the space is sealed and dry, it can be used for storage. The vapor barrier protects items from ground moisture, and the controlled environment reduces the risk of mold or mildew on stored materials.

Encapsulation provides long-term protection for homes built over crawl spaces, especially in areas where ground moisture is a constant problem. If your floors are cold, your crawl space smells damp, or you are seeing mold on floor joists, contact us to schedule an inspection and get a system installed that keeps your home dry and healthy.