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Crawl Space Encapsulation

Open crawl spaces allow moisture, mold, pests, and cold air into your home from below. Encapsulation seals the crawl space with a heavy-duty vapor barrier and improves ventilation or conditioning, creating a clean, dry space.

Why Professional Crawl Space Encapsulation?

Eliminates moisture and mold in the crawl space
Improves indoor air quality — 40% of air comes from below
Reduces heating and cooling costs
Deters rodents and pest access
Protects floor joists and insulation from rot
Increases home value and passes inspections

Our Crawl Space Encapsulation Process

1
Inspection & Assessment

We inspect the crawl space for existing moisture, mold, insulation condition, and structural issues to develop a complete encapsulation plan.

2
Preparation

Existing vapor barrier (if any) is removed, debris is cleared, existing insulation may be removed and replaced, and any mold is treated.

3
Liner Installation

A heavy-duty (20 mil+) polyethylene liner is installed across the floor and up the walls, sealed at seams and to the foundation walls with tape and adhesive.

4
Conditioning

A dehumidifier, conditioned air supply, or exhaust fan is installed depending on whether the space will be conditioned or ventilated.

Crawl Space Encapsulation by City

Our local pros understand the unique conditions of your city — climate, home types, and seasonal challenges.

Frequently Asked Questions

Why does it matter if my crawl space is damp?
Up to 40% of the air in your living space migrates up from below. Moisture and mold in the crawl space directly affects your indoor air quality, energy efficiency, and the structural integrity of floor joists.
What's the difference between a vapor barrier and full encapsulation?
A vapor barrier is just a ground cover liner. Full encapsulation covers all surfaces (floor, walls, piers) with a heavy-duty liner, seals all penetrations, and controls the humidity with a dehumidifier.
How long does encapsulation last?
A properly installed 20-mil liner lasts 20–30+ years. The dehumidifier needs periodic maintenance and eventual replacement. The system as a whole requires minimal ongoing attention.
Will encapsulation fix my musty basement smell?
If the smell is coming from the crawl space, yes. Encapsulation and humidity control eliminate the mold and moisture causing musty odors that migrate upward.

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