Pond liner

A pond liner is an impermeable geomembrane used for retention of liquids, including the lining of reservoirs, retention basins, hazardous and nonhazardous surface impoundments, garden ponds and artificial streams in parks and gardens.

The edge of the pond liner is generally rolled over the top of the soil slope and secured in an anchor trench or it can be fixed to a vertical wall made of wood or concrete.

The vast majority of flexible pond liners (aka, geomembranes) are available commercially and are manufactured using the following polymers; HDPE, LLDPE, fPP, PVC, EPDM.

They can also be manufactured with a fabric scrim between two plys of the polymer, e.g., PE-R, CSPE-R, fPP-R, EPDM-R, and BGM.

Geomembranes can also be made in-situ by spraying a polymer (polyurea, or equal) directly on a geotextile substrate.