Crawl Space Vapor Barrier Installation in Garner, NC
20-mil reinforced liner over bare Piedmont clay floors. Priced for Wake County homes on Johnston & Cowarts Silt Loam.
How much does crawl space vapor barrier installation cost in Garner, NC?
Crawl Space Vapor Barrier Installation in Garner, NC costs $4,000 to $8,900 for a typical home. A crawl space vapor barrier in the Triangle costs $1,800 to $4,200 and covers the dirt floor with a 20-mil reinforced polyethylene liner, seam-taped and mechanically fastened to foundation walls to block ground moisture from evaporating into floor joists.
Garner soil and why crawl spaces fail here
Garner drains into the Swift Creek basin, where Johnston and Cowarts silt loams hold water at low elevation. Organic-rich alluvial soil retains far more moisture than upland Cecil clay and dries out slowly even during Piedmont dry spells.
Persistently damp soil rots girders and band boards from the bottom up in ranch homes with shallow 18-inch clearances. Musty air is then drawn into the living space through return-duct leaks, so the whole house smells like the crawl space.
Many Garner crawl spaces are tight and low-clearance, which makes debris removal and liner detailing the labor-intensive part of the job.
Scope included in Garner
- 20-mil reinforced woven liner rated far above the builder-grade 6-mil poly used across Wake County subdivisions
- Seams double-taped and overlapped 12 inches, piers wrapped and sealed individually
- Termite inspection gap maintained per North Carolina building code
- Drainage matting added where Cecil clay perches water beneath the liner
Signs you need this
- Bare dirt or torn plastic under the house
- Musty odor rising into hallways and closets
- Condensation on ductwork in summer
Neighborhoods we cover in Garner
Other services in Garner
Vapor Barrier in nearby Triangle towns
See the full Garner crawl space guide or the Triangle-wide vapor barrier overview.
Vapor Barrier in Garner: common questions
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