Terra Sil is a water-resistant soil modifier that prevents moisture damage, improves compaction and extends pavement life. Moisture damage is the leading cause of failure for soil sublayers and dirt/gravel roads in Africa and South Africa. Infiltration of water can cause the soil to expand and lose cohesion, leading to ruts, corrugations, cracks and ravelling. TerraSil is an easy-to-apply soil modifier that permanently eliminates infiltration of water into soils. Making soil bases/dirt roads impervious to water has a significant impact on overall life cycle costs.