In resin bound surfacing the aggregate is mixed with the resin. The material is then trowelled down to a smooth finish similar to a screed (with no loose stones). Depths are specified depending on use, normally 12mm, 16mm, 18mm or 24mm.
The open matrix allows water to drain through to the base, eliminating water ponding and allowing water to drain to planted areas or land drains. The surfacing may be applied to SuDS compliant bases and sub-bases, reducing the impact of urban development on flood risk and allowing water to flow into water courses. When installed on to a SuDS compliant base the RonaDeck Resin Bound Surfacing system can allow up to 850 litres to permeate through every m2 per minute.