Geomembranes
P.V.C. (polyvinyl chloride)
These liners are extremely contractor-friendly and offer many advantages over other liners. P.V.C. is highly flexible so it easily conforms to sub grade contours, has excellent interface friction properties without being textured, excellent puncture and abrasion resistance and superior chemical resistance to acids, alkalis, & alcohols. P.V.C. is a logical choice for buried applications to protect from exposure to sunlight and is available in many formulations including fish grade and oil resistant.
They can be contractor installed using PVC glue or solvent. It should be noted, however, that PVC loses flexibility in cold temperatures, thus reducing its range of applications to certain climates or seasons. Because of PVC’s exceptional containment properties it has been used for sewage lagoons, decorative and recreational ponds, dams, settling ponds and more. Almost all of these applications require backfilled liners and as such, are typical uses for a PVC which requires protection from cold temperatures, mechanical damage and extended UV exposure.
H.D.P.E. (high density polyethylene)
H.D.P.E. has become the most widely used geomembrane today - most commonly in landfill liner applications. Their exceptionally high chemical resistance, reliability in exposed environments due to their high UV and cold temperature resistance renders HDPE liners the logical choice in numerous waste containment applications.
It is an extremely versatile material which is used widely across all applications and is an excellent choice for many secondary containments and virtually all water storage, including potable water, exposed canals and run-off ponds, settling ponds, and decorative ponds. In exposed applications HDPE geomembranes can last 20 years, in backfilled applications they will last hundreds of years.
R.P.E. (reinforced polyethylene)
R.P.E. geomembranes are lightweight multi-layer materials which offer a very economical solution in many primary containment applications, such as temporary landfill caps, canal lining, soil remediation and other non-hazardous applications. R.P.E.s remain flexible in very low temperatures, have good chemical resistance and short-term UV resistance, allowing it to remain exposed for three to five years.
The inner layer is typically a pre-stressed woven polyethylene tape, coated on both sides with an impermeable LDPE (low density polyethylene).
E.P.D.M. (ethylene propylene diene monomer)
E.P.D.M. liners are particularly suitable - due to their compatibility with all aquatic life - for use in landscape or recreational ponds such as water gardens, basins for fountains, bog gardens, lining of cracked hard-shell ponds, and other applications. They are economical, easy to install and fish ready.
Geosynthetic Systems offers numerous E.P.D.M. liners in varying thicknesses and roll sizes; we also provide off-the-spool 45mil EPDM sold by the square foot, for smaller projects.
P.P. (polypropylene)
PP geomembrane is manufactured without the reinforcing scrim found in supported styles, allowing them increased flexibility - ideal membrane solutions for detail work such as attaching to structures or creating corners. In addition to flexibility PP has other outstanding properties such as outstanding resistance to low temperatures and high UV resistance making PP ideal for exposed ponds. PP can be installed and welded in the coldest conditions (as low as -50C) and is a perfect choice for water and water based effluent storage applications where the liner will be left exposed, delivering many years of reliable containment.