Car Park Surfacing Specification
SUDs compliant permeable car park construction
Resin Bound Surface
Minimum 18mm thickness anti-slip aggregate bound with UV stable resins.
Binder Course
Minimum of 90mm depth of open graded asphalt concrete.
Granular Sub Base
Minimum 300mm of compacted granular sub-base.
Impermeable Membrane
Optional membrane to guide water flow
Geotextile Layer
Optional layer to prevent migration of sub-soil
.