In addition to flexibility PP has other outstanding properties, it has outstanding resistance to low temperatures and is highly UV resistant making PP ideal for exposed ponds. PP can be installed and welded in the coldest conditions having been installed in temperatures as low as -50 C (-58 F). Unsupported PP geomembranes are also NSF 61 certified for direct contact with drinking water.

Unsupported PP is manufactured at Layfield's facility in Vancouver BC. Layfield's PP formulation is an industry proven blend of virgin polymers and additives that will provide many years of dependable containment. Layfield's registered quality management system ensures that your PP geomembrane will consistently meet our specified properties, and perform to the highest standards available in the industry.

Unsupported PP is a clear choice for water and water based effluent storage when the liner will be left exposed. PP has quickly become a favorite with many of our customers who require a flexible prefabricated liner to provide tough, resilient containment. On your next water containment project PP's unique blend of properties and performance may be just what you are looking for.

Each and every liner panel produced is a custom panel. The way we set up our shop is unique in that our shop welders produce prefabricated panels to best match your containment area. We size each panel to fit, without waste, in a logical sequence in your containment area. In containments with irregular shapes we size our panels to best accommodate the irregular size.

There are no theoretical limits to the size of the liner panels that we can prefabricate but there are some practical limits, notably panel weight. Panel weight is important because of the limits of handling equipment that will be available in the field. If a forklift or other piece of equipment is available for placement and deployment then a panel up to 1800 kg (4000 lbs) could be used. If only “hand power” is available for deployment then a panel weight of 1400 kg (3000 lbs) should not be exceeded. Under certain circumstances larger panels can be provided. Please contact your EPI Representative for further details.

EPI utilizes hot wedge fusion welding for fabrication of unsupported PP materials. This welding technique produces welds with full Film Tear Bonds.

Panels are accordion folded in one direction and then rolled in the other direction. Unfolding instructions and dimensions are marked on the individual liner panel. Each panel is wrapped in an opaque, weather resistant, covering suitable for shipment and storage at site.