Crawl Space Repair, Radon Remediation, & Home Renovations in Huntsville

After confirming the fungal growth was being driven by chronic ground moisture and high humidity, we corrected the cause and converted the crawlspace into a controlled, dry environment. We installed a full-perimeter drainage pipe to capture water along the entire foundation and direct it into a sump pump basin, then set a reliable 1/3 HP sump pump and routed the discharge line away from the home to prevent recirculation. With water management in place, we sealed the crawlspace using an R-5 insulated encapsulation system paired with a heavy-duty 15 mil floor liner to block ground vapor and reduce temperature swings that feed condensation. To keep humidity consistently in the safe zone year-round, we added a Sierra Watchdog NXT 85-pint dehumidifier. Finally, we finished the enclosure with a custom-built PVC crawlspace door to create a tight, durable seal—stopping the moisture cycle that allowed fungal growth to thrive and helping protect the structure and indoor air above.

To solve the crawlspace issues, we started with soda blasting to remove existing fungal growth and surface contamination from the framing, leaving the wood clean and ready for long-term protection. Next, we installed a full interior perimeter drainage pipe system to capture water along the foundation wall and within the soil profile, then directed that collected water to a newly installed sump pump basin. Inside the basin, we set a 1/3 HP sump pump and connected a dedicated discharge line to move water safely away from the home. To control humidity and prevent future moisture-related problems, we installed a Sierra Watchdog NXT 85-pint dehumidifier to actively dry the crawlspace air. Finally, we improved access and sealing at the entry point with a custom-built PVC crawlspace door, helping reduce outside air and moisture intrusion and supporting a cleaner, more stable crawlspace environment.

To solve the moisture problem for good, we installed a complete crawlspace water-management and humidity-control system designed to keep the space dry in every season. First, we completed a full-perimeter drainage pipe installation to capture groundwater and direct it to a new sump pump basin. From there, we installed a reliable 1/3 HP sump pump and ran a dedicated discharge line to move water safely away from the foundation. To control humidity after the water is removed, we added a Sierra Watchdog NXT 85 Pint Dehumidifier to maintain healthy moisture levels and prevent musty odors and mold-friendly conditions. Finally, we completed the project with a custom-built PVC crawlspace door to improve the seal at the entry point, helping keep outside air and moisture from re-entering the crawlspace and supporting consistent, long-term performance of the system.

To solve the settling-floor issue at the source, we stabilized the crawlspace environment using our Crawlspace Doctor Exclusive Encapsulation System, which seals the area off from ground moisture and outside air that can drive rot, weakening framing, and long-term structural movement. We started by preparing the space, then installed a durable vapor barrier and sealed key seams and penetrations to create a tight, controlled crawlspace. To keep humidity consistently in the safe range year-round, we paired the encapsulation with a Sierra Watchdog NXT 85 Pint Dehumidifier, giving the crawlspace active moisture control even during the most humid months. With moisture and humidity brought under control, the subfloor system can dry, stay dry, and remain stable—helping prevent further settling and protecting the home’s floors and structure moving forward.

To address her request, we encapsulated the crawl space using an R-5 insulated encapsulation system with a durable 14-mil floor liner to separate the home from the damp ground and help improve energy efficiency. We then installed a Sierra Watchdog NXT 85-pint dehumidifier to control humidity levels and keep the air in the crawl space dry and stable. To finish the project, we custom-built a PVC crawlspace door, providing a tight, long-lasting seal at the entry point. Together, these steps created a cleaner, drier, and better-protected crawl space.

To solve the moisture issues around the home and protect the crawlspace long term, we started by installing a full-perimeter drainage pipe system to capture water before it could pool under or against the foundation. That drainage was routed into a dedicated sump pump basin, where a 1/3 HP sump pump now automatically collects and discharges water through a properly installed discharge line that carries it safely away from the house. Inside the crawlspace, we transformed the environment with an R-5 insulated encapsulation system and a durable 15-mil floor liner, sealing the ground and separating the home from damp soil and vapor. To actively control humidity, we installed a Sierra Watchdog NXT 85-pint dehumidifier, which maintains dry, stable conditions and helps prevent mold, wood decay, and musty odors. Finally, we custom built a PVC crawlspace door that won’t rot or warp and provides a tighter seal against outside air and moisture. Together, these steps turned a wet, vulnerable crawlspace into a clean, dry, and protected space that supports the health and stability of the entire home.