Geomembrane is an essentially impermeable membrane used with soil, earth,rock and foundation as a requisite part of an engineered project. High Density Polyethylene (HDPE) liner : High Density Polyethylene (HDPE) liner is the most widely used geomembrane in the world due to its inexpensive material cost. HDPE lining material is an excellent product for large applications that require UV and Ozone resistance, chemical resistance or high-quality installations. One of the main uses of HDPE is for landfill base liners, Waste lagoons, Pond lining, Aquacultures and mining applications where its chemical resistance is used to good effect. HDPE is best used as an exposed lining material, and has the UV resistance required for many years of outstanding service. HDPE Geomembrane Sheet : HDPE Geomembrane Sheet product is delivered in large rolls with a width of 1500mm and is a field assembled lining material that cannot be practically fabricated in the shop. All HDPE projects, regardless of size, must be installed by trained installers. HDPE offers the most cost effective liner for large projects. HDPE is available in thicknesses ranging from 0.70mm to 5mm.