Most Centenary homeowners arrive at crawl Space Vapor Barrier Installation having noticed something else first: a smell, a soft patch in the floor, or insulation on the ground. The inspection decides whether this is the right stage to start at.
Bare soil under the house is evaporating moisture into the space every day.
Vapor barrier on lowcountry and coastal plain ground
A barrier earns its keep faster around Centenary than almost anywhere. With the water table close to the surface the soil underneath is damp more or less permanently, so an uncovered crawl space floor is evaporating into the space every day of the year.
Coastal Marion County humidity is the other half of it. For much of the year the outside air here is wetter than the crawl space, so any approach that relies on ventilation to finish the job works against itself.
Centenary at a glance
| County | Marion County |
|---|---|
| ZIP | 29519 |
| Elevation | about 56 ft |
| Region | Lowcountry and coastal plain |
Named water nearby
- the Old Dead River (lake)
- Carey Lake (lake)
- Cypress Creek Lake (lake)
- Little Barnett Lake (lake)
Signs you need this
- Bare soil anywhere on the crawl space floor
- Existing sheeting that is torn, bunched or not sealed at seams
- Barrier that stops short of the walls and piers
- Crawl space relative humidity holding above 60 percent
What the work involves
Included as standard on Centenary jobs:
- Clearing and preparation of the crawl space floor
- Reinforced polyethylene barrier across the full soil area
- Overlapped and sealed seams
- Barrier carried up and sealed to walls and piers
Why it is worth dealing with now
The cost of this work does not stay flat. Every season a Centenary crawl space stays wet moves more of the job from drying towards framing repair.
The full method and the step-by-step for this work is on the Crawl Space Vapor Barrier Installation page, and how it behaves across the state is on the Vapor barrier in South Carolina page.
Vapor barrier in Centenary: common questions
Barrier or full encapsulation for a Centenary home?
A barrier covers the ground and stops soil moisture. Encapsulation seals the walls and vents too and controls humidity directly. Which one your Marion County property needs should follow a humidity reading, not a preference.
There is already plastic under my Centenary house. Is that enough?
Often not. Most of what we find has been laid loose, has torn, or was never sealed at the seams and walls. Unsealed sheeting performs much closer to bare soil than to a finished barrier.
Why is my Centenary crawl space wet when nothing has leaked?
Near Centenary that is the normal pattern rather than the exception. At around 56 feet on the coastal plain, the water table sits close enough to the surface that soil under the house can be saturated with no pipe broken.
Does storm flooding reach crawl spaces around Centenary?
Yes, and often with nothing visibly broken. After a tropical system the usual picture in Marion County is a saturated crawl space where the water came up through the ground rather than out of a pipe.
Does being close to the coast make this worse?
It raises the water table and lengthens the wet season, which is why homes near the Old Dead River and the low ground around Centenary tend to need drainage as well as a barrier.
Will a barrier fix water that is already coming in?
No. A barrier manages soil moisture and vapor, not liquid water under pressure. If groundwater or surface runoff is entering the space, that needs drainage and a sump before a barrier will do its job.
Vapor barrier near Centenary
We cover Centenary and the surrounding part of Marion County. The same service in nearby towns:
Other crawl space services in Centenary
Crawl Space Water Removal in Centenary
Standing water pumped and extracted from under the house, then the saturated material taken out.
Crawl Space Structural Drying in Centenary
Joists, girders and subfloor dried back to a measured target with air movers and dehumidification.
Crawl Space Mold Remediation in Centenary
Contained removal of mold-affected material, HEPA cleaning, and the moisture source shut off.
Crawl Space Drainage and Sump Pump Installation in Centenary
Interior drainage to collect water, a sump and pump to lift it, and a discharge that takes it away.
Crawl Space Wood and Subfloor Repair in Centenary
Rotted joists, girders, rim joists and subfloor sections repaired or replaced once the space is dry.
Or see everything we cover in our Centenary service area, and how this service works across the state on the South Carolina page.
Crawl Space Vapor Barrier Installation in Centenary
Call (888) 724-1354 and tell us your street and what the space looks like. We will tell you whether this is the right stage to start at.
Tell us what you are seeing under the house and we will tell you what it needs.