The Garden Guide

Pond liners

Landscape and Garden Product Directory & Pond construction guide

Liners have simplified the construction of garden ponds. If well-detailed they are strong and durable. For lined ponds the design principles are:

  • pond liners should never be visible - exposed liners are ugly and vulnerable
  • pond liners require protection from above and from below - this can be provided with two layers of fibre matting.
  • if necessary, concrete can be laid above and/or below the pond liner and the matting layers to provide additional protection
  • if a heavy object (eg a fountain, a sculpture or an island) is to stand above the pond liner then it will require a foundation below the pond liner
  • detailed design of the pond liner edge is of critical importance
  • free-form pond shapes are relataively easy to construct
  • rectangular ponds can be made with pre-formed liners (built into a box shape by the supplier)
  • rectangular and free-form pond shapes can
  • be combined by using hard construction for the pool edge and a flexible liner for the floor

The following materials are suitable for liners and are available in various thicknesses:

  • polythene
  • polyethelyne (PE)
  • polyvinylchloride (PVC)
  • Ethylene Propylene Diene Monomer (EPDM )
  • butyl rubber

Of these materials, butyl is the most expensive and the most durable

Trade names: Bend Tarp, Firestone, Pond Gard, Tetra Xavan, AquaWeve

Fibertex is a non-woven geotextile liner which can be used to protect the pond liner from sharp objects

Sheets of butyl liner can be welded on site

Welded water inlet to lined pond

Rectangular and free-form pond shapes