Wet Crawl Space
Moisture infiltration through the foundation walls and exposed soil in the crawl space created persistently high humidity levels. This condition resulted in musty odors, accelerated wood deterioration, and reduced the crawl space's viability for safe, usable storage.
Failing Crawl Space Liner
In another section of the crawl space, a previously installed vapor liner had been used in an attempt to address moisture intrusion. However, this was a generic, improperly installed solution that failed to fully seal the environment, as clearly shown in the photo. Due to inadequate thickness, coverage, and sealing, moisture continued to penetrate the space. A properly engineered, heavy-duty liner with professional installation was necessary to effectively control moisture and protect the crawl space.
Exposed Sump Pump
The existing sump pump system lacked a sealed cover, allowing moisture vapor to escape into the basement and significantly contribute to elevated humidity levels. Additionally, the open sump pit created a direct pathway for soil gases, including radon, to enter the living space. This condition increased indoor radon concentrations by permitting continuous airflow from the radon‑laden soil beneath the foundation into the basement environment.
Energy Recovery Ventilator
An energy recovery ventilator (ERV) was installed to continuously exchange stale indoor air with fresh outdoor air while capturing and transferring up to 80% of the thermal energy from the exhausted air stream. This process enhances indoor air quality, helps regulate indoor humidity levels, and improves overall energy efficiency, resulting in lower heating and cooling costs.
ERV Vent Cover
To ensure proper and safe ERV exhaust, we installed purpose-built vent covers over the basement window openings.
Radon Extraction Point
A radon extraction point was installed through the foundation to actively depressurize the sub-crawlspace area and remove radon gas from beneath the structure. PVC pipe was then secured to the extraction point and exited through the home's siding.
Radon Fan
A radon mitigation fan was installed on the exterior of the structure to actively induce sub‑slab and crawl space depressurization, drawing radon gas from beneath the home and venting it safely outdoors.
Releasing Radon Above Roofline
PVC vent piping was installed from the radon mitigation fan and routed above the roofline to safely discharge radon gases away from the structure in accordance with accepted venting practices.
Sealed Sump Pump Cover
A custom‑fitted, airtight sump pump cover was installed to seal the sump pit, preventing radon‑laden soil gases from entering the home. This sealed cover also helps reduce moisture intrusion and contributes to improved humidity control in the basement area.
Crawl Space Encapsulation
A CleanSpace® vapor barrier system was installed along the foundation walls and floor to manage groundwater seepage, reduce moisture intrusion, and control humidity levels. This continuous sealed membrane also serves as a barrier to help prevent radon gas from migrating into the home.
Replacing Failing Crawl Space Vaper Liner
CleanSpace® was professionally installed throughout the crawl space to replace the deteriorating vapor liner. This reinforced encapsulation system is significantly more durable than traditional vapor barriers and provides enhanced moisture and vapor control. When properly sealed and installed, CleanSpace effectively prevents ground moisture from penetrating the crawl space, helping to maintain a dry, controlled environment.
