Geomembranes are impermeable liners used in water management systems to form watertight tanks for the retention of surface water and are especially beneficial in infiltration or soakaway applications.

The membrane used depends on a risk assessment of the site and the ground and groundwater conditions. A robust, heavy duty product that is resistant to puncture, Geomembrane combines excellent chemical resistance with low flexural modulus to provide a malleable, flexible membrane suitable for non-smooth surfaces and factory prefabrication to optimise on-site installation. Jointing is formed using fusion or extrusion bead welding in accordance with manufacturing recommendations.