Crawl space repair & encapsulation

Many older Council Bluffs homes, along with additions built onto them, sit partly over a crawl space. A damp crawl space can lead to musty smells, sagging floors, and rot in the floor framing.

Signs of trouble

• A musty smell on the first floor, especially in summer
• Standing water or a wet, torn plastic sheet on the ground
• Condensation on ducts or pipes
• Soft or bouncy floors, or white fuzz or mold on the joists

What encapsulation includes

Encapsulation usually means fixing any standing water first, laying a heavy vapor barrier over the floor and up the walls, sealing the vents and the rim joist, and controlling humidity with a dehumidifier or conditioned air. Mold should be remediated before the space is sealed.

Costs

HomeGuide puts encapsulation at $3–$10 per square foot, or about $3,000–$15,000 total. That breaks down as roughly $1,200–$4,000 for the vapor barrier alone, plus an inspection that typically costs $100–$250.¹ If a quote doesn't mention a dehumidifier or drainage, ask why.