EPDM geomembrane rubber liner exhibits high tensile strength and provides resistance to punctures, UV radiation, weathering and microbial attack. It is also highly flexible material with a low co-efficient of thermal expansion and contraction, allowing it to lay flat in a wide range of temperatures and terrains thereby conforming well to irregularities in the subgrade. This linear is available in thicknesses from 30 to 45 mil. It is used in ponds, lakes, canals and fish stock ponds.