Rock Armour Filter – HPS5

Geofabrics HPS5 was successfully installed below the rock armour on the River Aire’s flood plain.

Geofabrics HPS5 is a thick needle punched nonwoven geotextile manufactured from 100% virgin polypropylene high tenacity fibres containing 1% active carbon black.

The main function of HPS5 is to prevent loss of the subsoil from below the rock armour. HPS5 was ideal with its combined filtration and permeability characteristics whilst its high tensile elongation and CBR provided a robust solution capable of withstanding the rock impact during installation.