We will tell you if crawl Space Vapor Barrier Installation is not what your Nesmith crawl space actually needs. Doing this stage out of order is the most common reason the work has to be repeated.
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 Nesmith 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.
Flood-zone construction around Nesmith is built elevated, which means newer homes have crawl spaces too. Newer framing, the same conditions underneath.
Nesmith at a glance
| County | Williamsburg County |
|---|---|
| ZIP | 29580 |
| Elevation | about 39 ft |
| Region | Lowcountry and coastal plain |
Named water nearby
- Wilson Lake (lake)
- Lakewood Pond (reservoir)
- Ervins Pond (reservoir)
- Browns Pond (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
On a Nesmith job this 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
Waiting is the expensive option here. Moisture that has been under a Nesmith floor for a year has already changed what the repair involves.
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 Nesmith: 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 Wilson Lake, drainage comes first or the sheeting simply floats on it.
There is already plastic under my Nesmith 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.
What should I have ready when I call about my Nesmith home?
Your street in Nesmith, 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.
How quickly does water under a Nesmith 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 Williamsburg County that window is shorter in summer than in winter, because the space stays warm and humid.
Will my Nesmith crawl space dry out if I open the vents?
Usually not. For much of the year the air around Nesmith is warmer and wetter than the crawl space, so opening it up deposits moisture on the cool joists instead of carrying it away.
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 Nesmith
We cover Nesmith and the surrounding part of Williamsburg County. The same service in nearby towns:
Other crawl space services in Nesmith
Crawl Space Water Removal in Nesmith
Standing water pumped and extracted from under the house, then the saturated material taken out.
Crawl Space Structural Drying in Nesmith
Joists, girders and subfloor dried back to a measured target with air movers and dehumidification.
Crawl Space Mold Remediation in Nesmith
Contained removal of mold-affected material, HEPA cleaning, and the moisture source shut off.
Crawl Space Drainage and Sump Pump Installation in Nesmith
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 Nesmith
Rotted joists, girders, rim joists and subfloor sections repaired or replaced once the space is dry.
Or see everything we cover in our Nesmith service area, and how this service works across the state on the South Carolina page.
Crawl Space Vapor Barrier Installation in Nesmith
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.