Porous paving grids are used to reinforce trafficked surfaces while maintaining natural drainage. Installed within the surface build up, the grid structure spreads loads across a wider area, reducing rutting, settlement and surface deformation caused by vehicles, foot traffic or repeated use.
These systems are commonly used on driveways, access roads, parking areas, paths and grassed surfaces where permeability is required. When filled with gravel or soil and grass, the grid confines the infill material, preventing lateral movement and loss of surface integrity over time.
Porous paving grids are particularly effective on weak, clay or variable sub grades where unbound aggregates alone are prone to movement. By improving load distribution and confinement, they can reduce the required depth of sub base while maintaining long term stability.
In permeable paving designs, porous grids support sustainable drainage by allowing water to pass vertically through the surface into the ground below. This helps manage surface water at source and forms part of SuDS compliant construction where runoff control is required.
Correct installation is critical to performance. Grids should be laid on a well prepared and level sub base, with a suitable non woven geotextile membrane beneath to separate the sub grade and prevent contamination of the aggregate layer. Infill choice, compaction and edge restraint all directly affect durability and service life.
This category includes porous paving grids suitable for domestic landscaping, vehicle trafficked driveways, commercial parking areas and heavy duty applications, allowing the correct grid to be selected based on loading and ground conditions.