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Crawl Space Vapor Barrier System In the Southeast

Stop ground moisture, outside air, and standing water from damaging your crawl space with a professionally installed vapor barrier system designed to keep your crawl space dry and protected.

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Everything You Need for a Dry Crawl Space in South Carolina, North Carolina, Alabama and Georgia

CleanSpace® Vapor Barrier Installation

Crawl Space Encapsulation

Insulation and Moisture Control

Drainage and Sump Pump Integration

what are Moisture / Vapor Barriers?

A moisture or vapor barrier is a thick plastic liner installed across a crawl space floor, walls, and support piers to block ground moisture from entering. Cantey Foundation Specialists uses the CleanSpace® system to create a sealed barrier that reduces damp conditions, protects wood framing, and supports a healthier, drier crawl space environment.

Crawl Space Encapsulation
Cantey Foundation Specialists

Signs to Look Out For!

Musty Smells in the Home

If your home smells damp or earthy, especially after rain, moisture may be building up in the crawl space. That air does not stay below your floors. It rises into your living space and carries odors with it. This often signals that ground moisture is not properly contained. A vapor barrier helps block that moisture before it affects the rest of your home.

Pooled water in the crawl space is a clear sign of a moisture problem. Water can enter from poor drainage, heavy rain, or open vents. Over time, it raises humidity levels and creates the right conditions for wood damage. If water is present, a simple plastic sheet is not enough. A properly installed vapor barrier system, often combined with drainage, is needed to control it.

If your floors feel uneven or start to sag, moisture below may be weakening the wood supports. Damp conditions can lead to wood rot and structural strain. This does not happen overnight, but it worsens when moisture is left untreated. Addressing the crawl space early helps protect beams and joists. A sealed vapor barrier system reduces the moisture that causes this damage.

Water droplets forming on ductwork or plumbing lines mean the air in the crawl space is too humid. That excess moisture can drip onto insulation or framing. Over time, this increases the risk of deterioration and higher energy costs. It also makes your HVAC system work harder. Controlling crawl space moisture with a sealed barrier helps reduce this humidity.

If you see dark staining on wood or insulation that looks wet or compressed, moisture is likely trapped below your home. Mold thrives in damp environments and can spread when humidity stays high. Even small areas of growth signal an ongoing moisture source. A vapor barrier blocks ground moisture and helps create a drier environment where mold is less likely to return.

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The Best Solution For The Problem

We install the CleanSpace® Vapor Barrier as a key component of a complete crawl space encapsulation system designed for long-term moisture control.

CleanSpace® Vapor Barrier

The CleanSpace® Vapor Barrier is a thick, durable liner designed to completely seal crawl space floors, walls, and support piers. This heavy-duty material is engineered to block ground moisture and create a continuous barrier between the earth and your home. When properly installed and sealed at the seams, it helps control damp conditions that lead to wood rot, mold growth, and musty odors.

When you install CleanSpace®, you get long-term moisture protection as part of a complete crawl space solution. The system works with drainage, insulation, and dehumidification components to create a dry, healthier space beneath your home.

TerraBlock™

TerraBlock™ crawl space insulation was developed to meet the challenge of insulating rough, uneven crawl space floors. However, this innovative insulation is versatile enough to be used on foundation walls as well. The ¾ inch thick sheet material is covered on both sides with a durable moisture barrier that makes the insulation resistant to puncture and abrasion damage.

When you install TerraBlock™, you get insulation and moisture protection from a single product. When installed over a crawl space floor, TerraBlock™ also provides a cushioned surface that service professionals and homeowners will appreciate when moving around in the crawl space.

SilverGlo™

SilverGlo™ Crawl Space Wall Insulation panels look different because they ARE different. Tiny graphite particles permeate its foam insulation to give it that silver/gray shine.

These tiny particles reflect heat and lower the material’s conductivity for superior R-value per inch.

In addition to resisting heat conduction, SilverGlo™ boasts a radiant barrier, which reflects heat back into your crawl space for energy savings.

For the best in energy efficiency, combine SilverGlo™ and TerraBlock™ together.

Steps to Installing A Crawl Space Vapor Barrier

Install Airtight Doors & Vent Covers

Sealing your crawl space doors and vents stop the cycle of cold, humidity, and moisture entering from the outside air. However, water can still enter your crawlspace in many ways.

01

Remove Any Standing Water Sources

The next step is to eliminate any sources of flooding in your crawl space by installing a crawl space drain and sump pump system. This eliminates flooding water from your crawl space, but moisture can still enter directly through the concrete and floor in the form of water vapor.

02

Repair The Structure

If your crawl space is sagging or damaged by prolonged mold and rot, the next step is to install crawl space support jacks to help restore your structure. This will help your floors stay even and stop any structural sagging upstairs.

03

Encapsulate & Insulate The Crawl Space

To stop moisture from passing through your floors and porous concrete walls, a crawl space vapor barrier should be installed. A durable liner will allow for servicemen to use the space without damage while transforming your crawl space into usable storage space. This is also the best time to install crawl space insulation on your walls or floors. Installing crawl space drainage matting underneath the crawl space liner will help direct water to the drainage system and sump pump.

04

Install A Dehumidifier

Installing an energy-efficient, self-draining crawl space dehumidifier will keep your space dry. Our crawl space dehumidifier system includes a filter that removes particles from the air as small as 2 microns. This ensures that your crawl space is protected from mold, dust mites, and mildew damage — permanently!

05

Why Choose Cantey for Your Crawl Space Vapor Barrier?

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Comprehensive, Integrated System

They don't just offer a moisture barrier; they provide a complete crawl space encapsulation system (CleanSpace®) designed to address all aspects of crawl space health.

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Patented, Industry-Leading Products

As an authorized Basement Systems and Supportworks contractor, they have exclusive access to high-quality, warrantied products specifically engineered for crawl space environments.

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Expertly Trained Professionals

Their technicians are trained to understand the complexities of crawl space issues and provide tailored solutions.

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Transferable Warranties

Their warrantied products provide long-term peace of mind, with warranties that can be transferred to new homeowners.

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Free Estimates

Offering a no-obligation evaluation allows homeowners to understand their problems and solutions without immediate commitment.

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Focus on Long-Term Solutions

Their solutions are designed for permanent repair and prevention, not just temporary fixes.

Benefits of Our Moisture Barrier Solutions

Prevents Mold and Mildew Growth

Creates a dry environment, eliminating the conditions necessary for mold and mildew to thrive.

Protects Home's Structural Integrity

Prevents wood rot and deterioration of support beams and joists caused by moisture, safeguarding your foundation.

Improves Indoor Air Quality

Reduces humidity, allergens, and musty odors that can infiltrate living spaces, leading to a healthier home environment.

Enhances Energy Efficiency

A dry and insulated crawl space helps regulate home temperature, potentially lowering heating and cooling costs.

Deters Pests

Eliminates the damp, dark conditions that attract rodents, insects, and other pests, making your crawl space less hospitable to them.

Increases Home Comfort

Contributes to warmer floors in winter and a cooler, less humid home in summer.

Protects Wiring and HVAC Systems

Prevents rust and corrosion of metal components like ductwork and pipes, extending their lifespan and preventing potential hazards.

Preserves Home Value

Addressing crawl space issues early on prevents costly repairs and protects the overall value of your property.

Provides Cleaner, More Usable Space

A dry, encapsulated crawl space is cleaner and safer for inspections or storage.

Reduces Unpleasant Odors

Eliminates the source of musty, damp smells that can permeate your entire home.

Our Customers Say it Best

Ask about our financing options

Cantey Foundation Specialists offers flexible, easy to understand financing options for homeowners. During our in-house visit, your specialist will help you find the financing options that work for YOU!

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12.99% for 120mos

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12 Mos

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What's the difference between a vapor barrier and crawl space encapsulation?

A vapor barrier (or moisture barrier) is a plastic sheeting installed to prevent ground moisture from entering. Encapsulation is a more comprehensive system that includes the vapor barrier, along with sealing vents, and often installing a dehumidifier and drainage, to create a completely sealed and conditioned space.
Signs include musty odors, visible mold growth on wood or insulation, sagging floors, condensation on pipes or ductwork, high indoor humidity, increased energy bills, and pest infestations. A professional inspection can confirm the need.
Yes, by preventing outside air and moisture from entering, the crawl space becomes part of your home’s conditioned space. This reduces the load on your HVAC system, leading to noticeable savings on heating and cooling costs.
Generally, minimal maintenance is required. It’s recommended to periodically inspect the barrier for any tears or damage and ensure the dehumidifier (if installed) is functioning correctly and its reservoir is emptied or draining properly.
The primary consideration is the initial investment, which can be significant depending on the scope of work. However, the long-term benefits in terms of structural integrity, energy savings, and improved air quality typically outweigh the cost. It’s also important to ensure any existing water issues are properly addressed before encapsulation to prevent trapped moisture.

frequently asked questions about vapor barriers

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