Stormflow Surfacing is a pour-in-place permeable paving material made from recycled tires. An eco-friendly green building product, Stormflow Surfacing infiltrates stormwater on-site, reduces the volume and slows the velocity of peak stormwater flow into storm drains and storm sewers, decreases erosion from runoff, filters out water pollutants, and recharges groundwater. Engineered with 29 percent void space, our permeable pavement allows water to permeate through its surface, filter down through the compacted aggregate base on which it is poured, and then seep into the soil. Stormflow Surfacing consists of 50 percent recycled rubber chips and 50 percent stone aggregate with a moisture-cured binding agent.