A crawl space vapor barrier is a durable ground cover that slows moisture rising from the soil into the space under your home. Home Run installs and replaces crawl space vapor barriers for homes in Covington, Conyers, McDonough and nearby Georgia communities.
Signs You Need a New Vapor Barrier
- The existing plastic is torn, bunched up or missing in sections
- Bare soil is exposed across much of the crawl space
- You see condensation under the plastic or on the joists
- The crawl space smells musty or feels damp
- A home inspection noted an inadequate or damaged vapor barrier
Choosing the Right Barrier
Thin 6-mil plastic is common in older homes but tears easily when anyone moves through the crawl space. Thicker reinforced liners, often 10 to 20 mil, hold up much better to foot traffic and service work. We will explain the options and which one fits your crawl space and goals.
How We Install It
- Clear debris and sharp objects that could puncture the liner
- Lay the barrier across the ground with generous overlaps
- Tape seams so moisture cannot slip through the gaps
- Run the barrier up foundation walls and around piers where appropriate
- Secure edges so the barrier stays in place over time
Barrier Only or Full Encapsulation?
A new vapor barrier is a good improvement on its own, especially if the crawl space is mostly dry. If you have high humidity, standing water or musty odors, full crawl space encapsulation with sealing and humidity control is usually the better long-term fix.
Vapor Barrier FAQs
Is a vapor barrier enough by itself?
It depends. It slows ground moisture, but it does not stop humid air from entering through vents. Crawl spaces with ongoing humidity issues typically need sealing and dehumidification as well.
Can I store things in my crawl space after installation?
A reinforced liner can handle light foot traffic and careful storage. Avoid dragging heavy or sharp items across it.
Serving Conyers, Covington, McDonough and nearby. Related: crawl space moisture control.