What surfaces work best for outdoor grounding?
Written by
Gina Mason
Reviewed by
Prof. Benjamin Murphy, Ph.D.The conductivity of a surface determines the efficiency of grounding. Damp grass offers the most efficient electron exchange due to moisture and contact with the soil. Wet earth has a good conductive effect, especially after a rain. The beach sand by the water has a proper conductance due to a balance of mineral content and moisture. River rocks retain in their substance the electrons of nature derived from the flowing water.
Damp Grass/Soil
- Conductivity: 80-120 μS/cm (highest)
- Moisture requirement: >40% soil saturation
- Contact time: Minimum 20 minutes
- Best locations: Lawns after rain, riverbanks
Beach Sand
- Conductivity: 50-80 μS/cm
- Optimal position: Tide line where sand meets water
- Salt content enhances electron transfer
- Duration: 30 minutes walking or sitting
Natural River Rocks
- Conductivity: 30-60 μS/cm
- Requirement: Must be submerged or water-polished
- Best practice: Standing in shallow streams
- Precaution: Avoid slippery surfaces
Concrete can do the trick when conditioned properly. Uncoated concrete requires relative humidities greater than 60% to maintain its conductivity. The moisture itself must penetrate the top layers of cement. Untreated concrete conducts more readily than well-aged surfaces. Always check the concrete with a multimeter before relying on its ability to form a ground. Uncoated surfaces must be avoided altogether.
Avoid surfaces that can block or obstruct electron transfer. Asphalt insulates completely regardless of moisture. Wood decks are not connected to the ground unless they are untreated. A dry surface prevents conductivity irrespective of the material. Industrial areas are exposed to chemical contamination. Always establish yourself in natural, undisturbed locations.
Moisture Enhancement
- Water dry grass 30 minutes before grounding
- Use spray bottle on small concrete areas
- Time sessions after rainfall or morning dew
- Create mud pits for high-conductivity spots
Safety Checks
- Scan for sharp objects before barefoot walking
- Test water quality near industrial areas
- Check tide schedules for beach grounding
- Verify rock stability in moving water
Urban Adaptations
- Use public parks with sprinkler systems
- Try community gardens with soil access
- Seek unpaved walking paths after rain
- Create balcony container gardens
Seasonal considerations affect effectiveness and optimal conditions. Spring has optimal moisture. Summer dictates morning sessions before evaporation. Fire-scorched leaves in autumn provide ground insulation, and winter limits opportunities except near geothermal areas. Adjust techniques in line with seasonal availability.
Read the full article: Unlocking Earthing Science: Benefits & Techniques
