JHS Crawlspace Specialist LLC

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About JHS Crawlspace Specialist LLC
JHS Crawlspace Specialist LLC operates as a dedicated waterproofing contractor serving Spartanburg, Greenville, and the broader Upstate region of South Carolina. The business holds a perfect 5.0-star rating across 64 customer reviews, reflecting consistent service quality in crawlspace encapsulation, moisture control, and repair work. Technicians service homes across Spartanburg County and Greenville County, including specific cities such as Boiling Springs, Inman, Greer, Duncan, Roebuck, Simpsonville, Taylors, Mauldin, Fountain Inn, and Travelers Rest. The company operates extended hours Monday through Saturday from 7 AM to 9 PM, with Sunday availability from 12 PM to 5 PM, accommodating homeowner schedules for inspections and consultations.
The company distinguishes itself through transparent inspection practices and honest recommendations without pressure tactics. Their process includes showing homeowners clear photos from under their home and explaining exactly what work the property needs rather than upselling unnecessary services. They offer crawlspace-rated dehumidifiers properly sized and drained for year-round humidity control, along with interior trench drains, sump pumps, and yard drainage solutions designed to stop water intrusion and flooding. The business maintains a semi-annual maintenance program at $139 per visit for recurring inspections and moisture checks, providing ongoing protection for homeowners who have invested in encapsulation systems.
Customer reviews highlight specific scenarios where technicians delivered measurable results. Nathan, a technician reviewers consistently mention, completed a full crawlspace encapsulation for one homeowner within two days after an initial Tuesday consultation, including mold and fungi treatment, crawlspace door replacement, and permanent dehumidifier installation. Another reviewer noted Nathan discovered water was entering through a roof leak during a crawlspace inspection, directing the homeowner to address the roofing issue rather than unnecessary crawlspace work. Reviewers consistently praise the lack of pressure tactics, with multiple customers noting Nathan provided fair pricing after comparing four estimates and declined to sell services the home did not actually require.
What Customers Say
Sixty-four reviewers awarded a perfect 5.0-star rating, with Nathan appearing in multiple reviews as the technician who provided honest assessments, fair pricing, and thorough communication. Customers frequently mention the lack of scare tactics and the company's willingness to recommend only necessary work, distinguishing this contractor from others who oversell services.
Working Hours
| SundayToday | 12–5 PM |
| Monday | 7 AM–9 PM |
| Tuesday | 7 AM–9 PM |
| Wednesday | 7 AM–9 PM |
| Thursday | 7 AM–9 PM |
| Friday | 7 AM–9 PM |
| Saturday | 7 AM–9 PM |
Services
Crawlspace Encapsulation
Seals ground, walls, vents, and air leaks to prevent humid Upstate air from feeding mold, odors, and wood moisture damage.
Vapor Barrier Installation
Installs sealed liners over soil to block ground moisture from reaching floor systems and causing structural damage.
Crawlspace Dehumidifier Installation
Sizes and installs crawlspace-rated dehumidifiers with proper drainage for year-round humidity control.
Moisture and Odor Control
Identifies damp air sources and treats musty odors after correcting underlying moisture problems.
Vent Sealing and Installation
Closes outdoor air infiltration points to maintain stable humidity levels throughout the year.
Crawlspace Drainage Solutions
Installs interior trench drains, sump pumps, and yard drainage systems to stop water intrusion and flooding.
Crawlspace Door Installation
Provides weather-tight access doors that keep pests and moisture out of the crawlspace permanently.
Crawlspace Maintenance Program
Offers semi-annual inspections and moisture monitoring at $139 per visit to protect encapsulated crawlspaces.