What are Geomembranes ?

Geomembranes are plastic sheets used for sealing a surface. In recent year, their use has dramatically increased to sheath channels, ponds, dumps and ornamental lakes. They are also used to prevent water leakage due to infiltration or to prevent the migration of pollutants down to the soil.  
Therefore, it's an effective tool for the preservation of the environment as it isolates the contamination of the soil and the groundwater with waste.
Each geomembrane has different properties depending on its characteristics and internal compositions. Inappropriate use can directly affect the performance and durability of the product.
The geomembranes differ in thickness, colour and texture, which vary depending on the project and the specifications demanded by engineering.
Here we highlight a few of the most used ones:

PVDF (Polyvinylidene Fluoride): resistant to chemicals, this is a high-functioning material ideal for surfaces with high solar exposure. It’s characterised by a polyester frame and offers an 8-year warranty.

PVC Geomembranes: (polyvinylchloride) they are flexible and ideal for irregular surfaces.

High Density Polyethylene: it’s the synthetic polymer with the highest production in the world. Its main characteristics include the fact that it’s colourless, odourless, non-toxic and it’s engineered in low pressure conditions. It offers excellent thermal and chemical resistance (even with acids), as well as great resistance and firmness against impact. It’s mainly used to waterproof tailings dams and for the packaging of chemicals.

Urethane: it holds great resistance against tears due to its internal polyester composition, it’s resistance to high temperatures, and due to its flexibility, it adapts to irregular surfaces.