Uncontrolled and unchannelled water can damage pavements, undermine foundations and cause slopes to fail. Drainage systems with ALYAF geotextiles provide excellent cost-effective solutions for controlled drainage of surface and ground water.
The excellent filtration capacity of ALYAF geotextiles makes them an excellent choice as filters to allow an unimpeded long term flow of water across them while preventing soil migration.

The critical geotextiles properties to be considered are :
  • A fine pore size, to retain soil fines
  • High permeability to allow unimpeded waterflow
  • High porosity, to prevent clogging
  • Good puncture resistance and tensile strength to survive loads