Finesse Pozidrain®
Finesse Pozidrain is the original wide width preformed drainage and gas venting layer. It is the sustainable and environmental alternative to filter stone.
Pozidrain consists of a high strength flexible polyethylene cuspated core with a non-woven geotextile bonded onto either one on both sides.
The polypropylene geotextile will filter a wide range of materials and is bonded to the core to ensure that it does not deform into the drainage passages under the action of backfill material. The geotextile allows water (or gas) to percolate into the core whilst supporting the backfill material. The collected water (or gas) is transported along the core to a discharge point.
The single cuspated HDPE core acts as a high performance drainage medium, with the spacing between the dimples designed to ensure an excellent support for the geotextile filter. Optimum compressive strength and resistance to creep ensure that the core will maintain its drainage capability under a wide variety of compressive loadings. The unique core design has clear passageways to allow flow in all directions.
Applications
A strong robust drainage layer for collecting leachate or ground water in landfill containments.
Drainage layer between soil cover and geomembrane of a landfill cap.
A system of venting methane and other gases from the perimeter of landfills and below the capping layer.
Leakage detection layer within the landfill base lining.
Cut-off trenches.
Embankment drainage and reinforcement.
Capillary break layer in the restoration of contaminated land.
Pozidrain is durable and sufficiently robust to resist the mechanical stresses imposed during installation and throughout the design life. Use of Pozidrain will eliminate the need for secondary protection of the geomembrane liners. Thick Terrex geotextile is used in the manufacture of Pozidrain Protector range to create a very substantial protection and drainage layer with just one installation cost.
