Crawl Space Vapor Barriers Sugar Hill Ga May 2026

Sugar Hill experiences an average annual precipitation of approximately 52 inches (132 cm), distributed relatively evenly throughout the year. Summer dew points frequently exceed 70°F (21°C), creating a potent vapor pressure differential. According to psychrometric analysis, when this exterior air enters a shaded crawl space (typically 10-15°F cooler), the relative humidity (RH) can spike to 90-100%, leading to persistent liquid water on surfaces.

Problem: A 2,000 sq. ft. home on Lake Lanier’s watershed (high water table) presented musty odors, cupped hardwood floors, and rusted HVAC drip pans. Inspection: Crawl space had 4-mil clear plastic (now shredded), 80% coverage. RH was 85% at 72°F. Remediation: Removal of debris and moldy insulation. Installation of 12-mil reinforced polyethylene with sealed seams and 8-inch wall terminations. Foundation vents sealed. Installation of a 70-pint/day dehumidifier. Outcome: Six-month follow-up showed RH stable at 55%, wood moisture content reduced from 22% to 12%, and air changes per hour (ACH) of radon and humidity normalized. crawl space vapor barriers sugar hill ga

[Generated for User] Date: April 14, 2026 Sugar Hill experiences an average annual precipitation of