On a Blenheim job, crawl Space Vapor Barrier Installation follows from the inspection rather than preceding it — there is no point specifying this work before the source of the water is known.
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 Blenheim 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 Blenheim 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.
Blenheim at a glance
| County | Marlboro County |
|---|---|
| ZIP | 29516 |
| Elevation | about 118 ft |
| Region | Lowcountry and coastal plain |
Named water nearby
- Henegan Lake (lake)
- Poston Pond (reservoir)
- Dailys Pond (reservoir)
- Drakes Millpond (reservoir)
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
The scope on a Marlboro County property:
- 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
A crawl space problem in Blenheim is not self-limiting. The conditions that created it are still there, and they are still working.
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 Blenheim: common questions
There is already plastic under my Blenheim 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.
Barrier or full encapsulation for a Blenheim home?
A barrier covers the ground and stops soil moisture. Encapsulation seals the walls and vents too and controls humidity directly. Which one your Marlboro County property needs should follow a humidity reading, not a preference.
Will my Blenheim crawl space dry out if I open the vents?
Usually not. For much of the year the air around Blenheim is warmer and wetter than the crawl space, so opening it up deposits moisture on the cool joists instead of carrying it away.
Does storm flooding reach crawl spaces around Blenheim?
Yes, and often with nothing visibly broken. After a tropical system the usual picture in Marlboro County is a saturated crawl space where the water came up through the ground rather than out of a pipe.
Is crawl space water damage covered by insurance?
It depends on the cause, not the address. A burst pipe in a Blenheim home is commonly covered; groundwater, long-term seepage and flooding usually are not, and flood damage generally needs separate cover. Photograph everything first.
What is the difference between a vapor barrier and encapsulation?
A vapor barrier covers the soil and stops ground moisture evaporating into the space. Encapsulation goes further — ground, walls and usually the vents are sealed and the space is brought inside the building envelope, normally with a dehumidifier to control humidity directly. Encapsulation does more and costs more.
Vapor barrier near Blenheim
We cover Blenheim and the surrounding part of Marlboro County. The same service in nearby towns:
Other crawl space services in Blenheim
Crawl Space Water Removal in Blenheim
Standing water pumped and extracted from under the house, then the saturated material taken out.
Crawl Space Structural Drying in Blenheim
Joists, girders and subfloor dried back to a measured target with air movers and dehumidification.
Crawl Space Mold Remediation in Blenheim
Contained removal of mold-affected material, HEPA cleaning, and the moisture source shut off.
Crawl Space Drainage and Sump Pump Installation in Blenheim
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 Blenheim
Rotted joists, girders, rim joists and subfloor sections repaired or replaced once the space is dry.
Or see everything we cover in our Blenheim service area, and how this service works across the state on the South Carolina page.
Crawl Space Vapor Barrier Installation in Blenheim
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.