Black Woven Geotextile MembraneUks Best selling general purpose Black Woven Geotextile Membrane. Fast Track 609 provides a cost effective solution for separation and filtration, for both the general building and domestic markets. Not only perfect as a separation fabric when laying gravel or bark to flower beds and borders and as a weed blanket for general ground cover, its also hardwearing enough to create a firm sub base separation layer below driveways, pathways, and hardstandings.Applications for FASTRACK 609:Separating/Strengthening – layer under access roads and areas of hard standingSeparation layers under stone foundations for new buildings.Separation layers under new roads, car parks & industrial areas.Separation granular fill from sub soils and other fill types