What crawl Space Vapor Barrier Installation involves in Kiawah Island is the same as anywhere. What differs is the condition it is dealing with, and that is set by the ground the house sits on.
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 Kiawah Island 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.
In Kiawah Island the complication is the water table. It sits close enough to the surface that soil under a house can be saturated with nothing broken, so this work is usually dealing with moisture arriving from below rather than from a failure inside the house.
Kiawah Island at a glance
| County | Charleston County |
|---|---|
| ZIP | 29455 |
| Elevation | about 3 ft |
| Region | Lowcountry and coastal plain |
Named water nearby
- the Kiawah River (stream)
- the Stono River (stream)
- Middleton Lake (reservoir)
- the Folly River (stream)
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 Kiawah Island 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 gap between a drying job and a structural repair in Kiawah Island is usually measured in seasons, not years.
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 Kiawah Island: common questions
Will a barrier stop water that is already getting in?
No. A barrier manages soil moisture and vapor, not liquid water under pressure. If water is entering the space near the Kiawah River, drainage comes first or the sheeting simply floats on it.
There is already plastic under my Kiawah Island 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.
How quickly does water under a Kiawah Island house need to come out?
Quickly. Wood starts absorbing moisture immediately and mold can establish on damp material within roughly 24 to 48 hours. In Charleston County that window is shorter in summer than in winter, because the space stays warm and humid.
How do I know whether it is groundwater or a leak?
That is the first thing we establish on a Kiawah Island call, because everything after it depends on the answer. A supply line, a drain, water rising through the soil and runoff coming in through the vents each leave different evidence.
Do you cover all of Kiawah Island?
Yes — Kiawah Island and the surrounding part of Charleston County, including the 29455 area. We also work in nearby Seabrook Island, Rockville and Wadmalaw.
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 Kiawah Island
We cover Kiawah Island and the surrounding part of Charleston County. The same service in nearby towns:
Other crawl space services in Kiawah Island
Crawl Space Water Removal in Kiawah Island
Standing water pumped and extracted from under the house, then the saturated material taken out.
Crawl Space Structural Drying in Kiawah Island
Joists, girders and subfloor dried back to a measured target with air movers and dehumidification.
Crawl Space Mold Remediation in Kiawah Island
Contained removal of mold-affected material, HEPA cleaning, and the moisture source shut off.
Crawl Space Drainage and Sump Pump Installation in Kiawah Island
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 Kiawah Island
Rotted joists, girders, rim joists and subfloor sections repaired or replaced once the space is dry.
Or see everything we cover in our Kiawah Island service area, and how this service works across the state on the South Carolina page.
Crawl Space Vapor Barrier Installation in Kiawah Island
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.