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Crawlspace Encapsulation

A damp crawlspace affects your entire home. Moisture, pests, and poor air quality can result. Crawlspace encapsulation seals the space and controls moisture for a healthier, more efficient home.

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What is Crawlspace Encapsulation?

Crawlspace encapsulation involves sealing the crawlspace with a heavy-duty vapor barrier (typically 20-mil polyethylene) that covers the floor and extends up the walls. The goal is to create a sealed, conditioned space that blocks moisture, pests, and outside air from entering.

A complete encapsulation may also include sealing vents, adding a dehumidifier if needed, and insulating walls. The result is a dry, clean space that no longer contributes moisture or contaminants to your living areas.

A crawl space fully lined with a white vapor barrier on the floor and walls
A finished encapsulation: barrier on the floor, up the walls, sealed at the piers.

Why Crawlspace Encapsulation Matters

up to 50%of the air on your first floor can come from the crawl space

Missouri homes with crawlspaces face moisture challenges year-round. Damp crawlspaces can lead to mold, wood rot, pest problems, and musty air that rises into your home. Up to 50% of the air you breathe on the first floor can come from the crawlspace.

Encapsulation improves indoor air quality, can reduce humidity and allergens, may lower energy costs, and helps protect your home's structure from moisture damage.

Our Process

  1. Assessment

    We inspect your crawlspace for moisture, pests, and structural issues.

  2. Preparation

    We address any standing water, debris, or pest issues before encapsulation.

  3. Installation

    We install the vapor barrier, seal vents and penetrations, and add any needed dehumidification.

  4. Verification

    We ensure the encapsulation is complete and the space is properly sealed.

Frequently Asked Questions