Crawl Space Encapsulation

Crawlspace encapsulation northern Virginia cecco

Ceeco Construction is a trusted crawlspace encapsulation contractor in Northern Virginia, specializing in improving indoor air quality by addressing the often-overlooked issue of damp, humid crawlspaces. Many homes in the region suffer from the effects of exposed dirt floors in their crawlspaces, which allow moisture to rise into the air and circulate throughout the house. This excess moisture creates an environment where mold and mildew thrive, leading to the release of spores that can trigger allergies and respiratory issues for those living in the home.


Crawlspace encapsulation is an effective solution to this problem. By sealing off the crawlspace with a durable vapor barrier, Ceeco Construction prevents moisture from entering the air, reducing humidity levels significantly. This process not only protects your home from mold and mildew growth but also helps to improve the overall energy efficiency of your home. Encapsulation can lower heating and cooling costs by preventing the damp air from affecting your HVAC system’s performance.

Beyond moisture control, crawlspace encapsulation also enhances the structural integrity of your home.
By reducing the amount of moisture in the crawlspace, you can prevent wood rot and other forms of structural damage that can compromise the stability of your house over time. Additionally, encapsulating your crawlspace can create a cleaner, more usable space, potentially adding storage and increasing the overall value of your property.

Ceeco Construction has the expertise to properly assess and encapsulate your crawlspace, ensuring your home remains healthy, comfortable, and energy-efficient. We take pride in delivering high-quality workmanship and tailored solutions to meet the specific needs of each client. If you’re concerned about the air quality in your home, contact Ceeco Construction to learn more about how our crawlspace encapsulation services can make a difference.

How Cecco Encapsulates Your Crawlspace In Northern Virginia

Ceeco Construction employs a meticulous and systematic approach to crawlspace encapsulation in homes across Northern Virginia, ensuring that every aspect of the project is handled with the utmost care to improve air quality, prevent moisture issues, and enhance the structural integrity of your home. The encapsulation process begins with the removal of any debris present in the crawlspace. Over time, crawlspaces can accumulate various types of debris, including old insulation, which often becomes a breeding ground for mold. If the existing insulation is contaminated, it poses a significant risk to the air quality in the upper parts of the home. Mold spores can easily travel from the crawlspace to the living areas, leading to potential health problems. To prevent this, Ceeco Construction carefully removes any old insulation from the floor joists, ensuring that it is properly bagged and hauled away, leaving the crawlspace clean and free of contaminants.

Once the debris and old insulation have been cleared, the next step involves leveling the floor of the crawlspace. This is a crucial step as an uneven surface can lead to water pooling, which exacerbates moisture problems. During this process, the team at Ceeco Construction conducts a thorough inspection of the structural components of the crawlspace, paying close attention to the floor joists, band boards, and sill plates. These elements are critical to the structural integrity of the home, and any damage to them could compromise the overall stability of the structure. If any of these components are found to be damaged, they are promptly replaced with new, pressure-treated lumber. This type of lumber is resistant to moisture and decay, ensuring that the repairs will last for many years. In addition to replacing damaged wood, Ceeco Construction treats all wooden areas of the crawlspace with an EPA-approved biocide. This treatment helps to eliminate any existing mold and prevents new mold from forming, further protecting the health and safety of the home’s occupants.


After the structural repairs and biocide treatment, the next phase involves laying down 4 inches of #57 gravel across the floor of the crawlspace. This gravel serves several important functions. First, it creates a stable and level base for the encapsulation materials. Second, it aids in drainage by allowing water to flow freely beneath the surface, preventing it from accumulating in the crawlspace. With the gravel in place, the team then installs a sump pump system, which is an essential component of the encapsulation process. The sump pump is connected to 4-inch perforated pipes that run along the perimeter of the crawlspace. These pipes are designed to capture any water that enters the crawlspace and direct it to the sump pump crib, where it is then pumped out of the space. To ensure that the system operates efficiently, a 1 ½-inch discharge pipe is run from the sump pump to the exterior of the house, passing through the band board. In Northern Virginia, where winter temperatures can drop significantly, a freeze guard is installed on the discharge pipe to prevent it from freezing and blocking water flow.
At this stage, Ceeco Construction brings in a licensed electrician to handle the electrical components of the project. The electrician installs a dedicated 15-amp circuit with a GFCI outlet to power the sump pump. This step is crucial for the safe and reliable operation of the sump pump system. In accordance with local regulations, a permit is required for this electrical work, which Ceeco Construction ensures is properly obtained and filed. Once the plumbing and electrical work have been completed and inspected, the team moves on to the next steps in the encapsulation process.
One important consideration during the installation of the sump pump system is the inclusion of a battery backup. This backup system is DC-powered and is designed to activate in the event of a power outage. In Northern Virginia, where stormy weather can occasionally disrupt the electrical grid, having a battery backup ensures that the sump pump will continue to operate and prevent water from accumulating in the crawlspace.
With the sump pump system fully operational, Ceeco Construction then installs a plastic vapor barrier across the floor of the crawlspace. The barrier is a minimum of 12mm thick and is specifically designed to prevent moisture from entering the space. Proper installation of the vapor barrier is critical to the success of the encapsulation process. The barrier is carefully sealed with specialized tape to ensure that no gaps or seams are left exposed. It covers the entire floor of the crawlspace and extends up at least 4 feet on the walls, creating a comprehensive seal that protects the space from moisture. For larger crawlspaces, particularly those with a perimeter exceeding 100 feet, Ceeco Construction may recommend the installation of a second sump pump to ensure optimal water management.
The final phase of the encapsulation process involves the installation of a dehumidifier. The dehumidifier is connected to the sump pump crib and is essential for maintaining optimal humidity levels in the crawlspace, ideally between 45% and 50%. By keeping humidity levels in check, the dehumidifier helps to prevent mold growth and ensures that the crawlspace remains a healthy environment. Once the dehumidifier is in place, the team conducts a final inspection of the electrical work and seals any vents leading into the crawlspace. This comprehensive approach ensures that your crawlspace is fully encapsulated, providing long-term protection against moisture, mold, and structural damage, and improving the overall air quality in your home.