Full Crawl Space Encapsulation in Raleigh, NC
Sealed, conditioned, humidity-controlled crawl space system. Priced for Wake County homes on Cecil Clay Loam over granite bedrock.
How much does full crawl space encapsulation cost in Raleigh, NC?
Full Crawl Space Encapsulation in Raleigh, NC costs $4,500 to $10,500 for a typical home. Full crawl space encapsulation in the Raleigh-Durham area costs $4,000 to $12,000 and includes a 20-mil liner on floors and walls, sealed foundation vents, perimeter wall insulation, drainage correction, and a commercial dehumidifier calibrated to hold relative humidity below 55%.
Raleigh soil and why crawl spaces fail here
Raleigh sits on the Cecil soil series, a red clay loam weathered from granite and gneiss of the Raleigh Belt. Beneath the topsoil, dense clay subsoil sits on saprolite and shallow bedrock, so the 46 inches of rain the city receives each year cannot percolate downward. Water moves laterally instead, riding the top of the clay until it reaches a foundation footing.
Inside-the-Beltline homes from the 1940s through 1960s were built with open vents and bare dirt floors. The stack effect pulls that soil dampness up through the floor system and into ductwork, seeding Cladosporium colonies on subfloor sheathing and carrying musty air into bedrooms upstairs.
From Five Points and Hayes Barton to Brier Creek and Wakefield, Raleigh's housing stock spans eighty years of construction standards, and almost none of the pre-2005 crawl spaces were sealed.
Scope included in Raleigh
- Full floor-to-wall liner system with sealed vents and insulated rim joists
- Commercial dehumidifier sized to the cubic footage and Triangle summer dew points
- Existing fallen fiberglass insulation and rotted debris removed first
- Post-install humidity verification and moisture-content readings on joists
Signs you need this
- Relative humidity above 60% under the home
- Cupping hardwood floors above the crawl space
- High summer cooling bills and clammy indoor air
Neighborhoods we cover in Raleigh
Other services in Raleigh
Full Encapsulation in nearby Triangle towns
See the full Raleigh crawl space guide or the Triangle-wide full encapsulation overview.
Full Encapsulation in Raleigh: common questions
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