Taken on its own, crawl Space Vapor Barrier Installation treats one part of the problem. Taken in order, it is the part that makes the rest hold. That is how we schedule it on Gresham jobs.
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 Gresham 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.
Gresham at a glance
| County | Marion County |
|---|---|
| ZIP | 29546 |
| Elevation | about 52 ft |
| Region | Lowcountry and coastal plain |
Named water nearby
- King River Pond (reservoir)
- the Dead River (stream)
- Graves Lake (lake)
- Dog 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
For a Gresham crawl space, the work covers:
- 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
Nothing about a damp Gresham crawl space improves on its own. The space is enclosed, shaded and over soil — all three work against it drying out.
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 Gresham: common questions
Barrier or full encapsulation for a Gresham 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.
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 King River Pond, drainage comes first or the sheeting simply floats on it.
Can I stay in the house while the work is done?
In almost all cases, yes. The work happens under the floor, and access is usually through an exterior hatch. We will tell you up front if anything about your Gresham property changes that.
What should I have ready when I call about my Gresham home?
Your street in Gresham, when you first noticed it, and what you can see or smell — standing water, a waterline on the piers, insulation hanging down, or a floor that has gone soft. Photographs help.
Do you work outside Gresham itself?
Yes. We cover Marion County broadly, including Centenary, Johnsonville and Pamplico, and the rest of the Lowcountry and coastal plain of South Carolina.
I already have plastic down there. Is that enough?
Often not. Most of the sheeting we find has been laid loose, has torn, has pulled away from the walls or was never sealed at the seams. Unsealed, incomplete sheeting lets ground moisture track around and through it, and performs much closer to bare soil than to a finished barrier.
Vapor barrier near Gresham
We cover Gresham and the surrounding part of Marion County. The same service in nearby towns:
Other crawl space services in Gresham
Crawl Space Water Removal in Gresham
Standing water pumped and extracted from under the house, then the saturated material taken out.
Crawl Space Structural Drying in Gresham
Joists, girders and subfloor dried back to a measured target with air movers and dehumidification.
Crawl Space Mold Remediation in Gresham
Contained removal of mold-affected material, HEPA cleaning, and the moisture source shut off.
Crawl Space Drainage and Sump Pump Installation in Gresham
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 Gresham
Rotted joists, girders, rim joists and subfloor sections repaired or replaced once the space is dry.
Or see everything we cover in our Gresham service area, and how this service works across the state on the South Carolina page.
Crawl Space Vapor Barrier Installation in Gresham
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.