Silica sand is combined with geothermal grout, show more...
Silica sand is combined with geothermal grout at various concentrations to help yield a specific thermal conductivity rating. Hole Products offers a full line of premium quality silica sands available in 50 lb. or 100 lb. bags and 3,000 lb. super sacks. Bulk dump loads and additional sand sizes are available on request. Please contact a Hole Product representative for additional details.