PVC Geomembrane Liners - South Africa's Most Accessible Dam & Pond Liner
Reinforced polyester-scrim PVC geomembrane liners for farm dams, irrigation reservoirs, aquaculture ponds and industrial water containment across Africa. Locally manufactured. Available from 550gsm to 800gsm. Potable water certified grade available.
Technical Specification of PVC Geomembrane Liners - South Africa's Most Accessible Dam & Pond Liner
Reinforced PVC geomembranes are polyester-scrim-backed flexible liners manufactured by knife-over-roller or air-knife coating processes, combining a UV-stabilised PVC formulation with an internal high-tenacity polyester scrim reinforcement layer. The scrim provides dimensional stability, enhanced tear resistance and improved tensile performance over unreinforced PVC - critical properties for exposed dam and reservoir applications where wind uplift, hydrostatic pressure and subgrade irregularity are design conditions.
Geosynthetics Africa supplies Tecco-manufactured reinforced PVC geomembranes in four grades - 550gsm, 700gsm, 720gsm (potable water certified) and 800gsm. All grades incorporate UV stabilisers and are available in standard widths for field welding or prefabricated panel supply.
PVC geomembranes are the cost-efficient specification for agricultural dams, irrigation storage, aquaculture ponds and community water projects where HDPE's chemical resistance ceiling is not required and EPDM's rubber elasticity is not the governing design parameter. Their flexibility, weldability and conformance to irregular earthen substrates make them a practical, well-established liner choice for the majority of farm dam and small-to-medium reservoir applications across Africa.
Typical Values for PIPES DRAINAGE DUCTING
Properties & Dimensions
| Property | R-PVC550 | R-PVC700 | R-PVC720P | R-PVC800 |
|---|---|---|---|---|
| Weight | 550 g/m² | 700 g/m² | 720 g/m² | 800 g/m² |
| Reinforcement | Polyester scrim | Polyester scrim | Polyester scrim | Polyester scrim |
| UV Stabilised | Yes | Yes | Yes | Yes |
| Potable Water Approved | No | No | Yes | No |
| Temperature Range | -30°C to 60°C | -30°C to 60°C | -30°C to 60°C | -30°C to 60°C |
| Seam Method | Hot-air weld | Hot-air weld | Hot-air weld | Hot-air weld |
| Tensile Strength (N/50mm) | 1000 | 1600 | 1600 | 2000 |
| Thickness | ±0.6 mm | ±0.72 mm | ±0.75 mm | ±0.85 mm |
| Service Life | 5–10 yrs | 10–15 yrs | 10–15 yrs | 15+ yrs |
| Colour Options | Black, Blue | Black, Blue | Blue, White | Black |
Popular Catalogue Items
PVC Geomembrane Dam & Reservoir Liner - 550 / 700 / 800 g/m²
Polyester-scrim reinforced PVC geomembrane in three grades from 550 to 800 g/m². For farm dams, irrigation reservoirs, aquaculture ponds and industrial water containment. Supplied in 3 m × 50 m rolls across 30+ African countries.Related Product Groups
Three Questions To Ask Before You Order
1.What is the difference between the four PVC grades?
2.Is the 720gsm grade certified for potable water storage?
3.How does reinforced PVC compare to HDPE for dam lining?
4.Can PVC liners be supplied in custom panel sizes?
Specification For The Design, Installation Of PVC Geomembrane Liners - South Africa's Most Accessible Dam & Pond Liner
Subgrade preparation for reinforced PVC follows the same fundamentals as all geomembrane installations: the substrate must be smooth, compacted, and free of protrusions, roots, sharp stones and standing water before liner deployment. A needle-punched geotextile protection layer is recommended between the subgrade and PVC membrane on earthen embankments where subgrade particle size or construction conditions present a puncture risk - PVC is more susceptible to puncture than HDPE and subgrade quality directly affects liner service life.
Field seams are made using hot-air welding equipment producing either single or double-track welds. All field seams must be tested — typically by air-lance or vacuum-box method - before the liner is covered or water is introduced. Where large panel fabrication has been completed in factory conditions, field seam frequency is reduced and installation time shortened. All pipe penetrations and fittings must be sealed using compatible PVC flashing and welded connections - mechanical fastening alone is not acceptable for water-retaining applications.
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