Water infrastructure
Lining for reservoirs that have to hold, not seep
Virgin HDPE sheet with a UV-stabilised outer face, welded seams and a panel layout drawn before the first roll is cut.
- 0.5–2.5 mmThickness
- up to 8 mPanel width
- 20+ yearsDesign life
Overview
A reservoir lining is a system, not a roll of sheet. The sheet only performs if the panel layout matches the tank geometry, the seams are welded to a checked procedure, and the anchor trench is detailed before excavation finishes. We supply the sheet with a panel layout drawing and welding parameters, and we can review your tank dimensions before production so the panels arrive in the order they are installed.
Sheet is produced from virgin HDPE with carbon black and UV stabiliser in the outer plies, in smooth or textured finish. Textured sheet is used on batter slopes where friction matters, smooth sheet on floors and covers. Thickness runs 0.5 to 2.5 mm, width to 8 m, which reduces the seam length on large tanks considerably.
What it does in the field
-
Wide panels, fewer seams
Widths to 8 m cut seam length by a third on a typical farm tank, and every metre of seam not welded is a leak not risked.
-
Panel layout before production
We draw the panel plan from your tank dimensions and label each roll in installation order, so the site work is sequence, not puzzle.
-
UV-stabilised outer plies
Carbon black and stabiliser in the exposed layers protect the sheet where it is left uncovered on the batter.
-
Welding parameters supplied
Wedge and hot-air weld settings are issued with the shipment, so the installer works to a specified procedure rather than trial and error.
-
Textured where friction matters
Textured grades hold on slopes and under soil cover, which is what stops the sheet sliding during backfill.
Grades available
0.5–0.75 mm
Small farm ponds, temporary storage and biogas covers where the head of water is low.
1.0–1.5 mm
The standard range for farm water reservoirs and lined tanks up to 5 m depth.
2.0–2.5 mm
Large reservoirs, steep batters and sites with rocky subgrade where puncture risk is higher.
Textured surface
Both faces or one face textured to hold friction on slopes and under cover material, preventing slip during installation.
Technical data
| Material | Virgin HDPE with carbon black |
|---|---|
| Thickness | 0.5 / 0.75 / 1.0 / 1.5 / 2.0 / 2.5 mm |
| Width | up to 8 m |
| Roll length | 50 – 100 m, or by panel schedule |
| Surface | Smooth or textured (single or double sided) |
| Colour | Black |
| Density | ≥ 0.94 g/cm³ |
| Carbon black | 2.0 – 3.0% |
| Design life | 20+ years buried or covered |
Values are indicative. Final tolerances, roll lengths and packing are confirmed in writing on the order confirmation.
Typical applications
- Farm water storage reservoirs
- Irrigation and fish ponds
- Biogas digester covers
- Effluent and slurry lagoons
- Water treatment and settling tanks
- Landfill and containment cells
Packing & loading
Rolls are core-wound, wrapped in opaque film to protect the UV face, and labelled with thickness, width, length, panel number and installation sequence. A panel layout drawing and welding parameters are issued as a PDF with each order.
Questions buyers ask
1.0–1.5 mm is the normal range for a 4 m tank with a prepared sand subgrade. Go to 2.0 mm where the subgrade is rocky or the batter is steep.
Yes. Send the tank dimensions, batter slope and anchor trench detail and we return a panel drawing with roll labels in installation order.
Wedge welding for the main seams and extrusion welding for details and repairs. We issue the parameters for both with the shipment.
We do not send installation crews, but we can recommend contractors in several markets and we review weld test results if you send them.
Also specified with
Products bought alongside
Ground management
Weed Control Fabric
Woven black ground cover fabric at 70–150 gsm, UV-stabilised for 3–5 years, cut with planting holes for orchards and nurseries.
Crop establishment
Agricultural Mulch Film
UV-stabilised polyethylene mulch film for vegetables, maize, sugarcane and orchards, produced in black, silver-black, white-black and clear.
Protected cultivation
Greenhouse Film
Three-layer co-extruded greenhouse covering film with UV, anti-drip and anti-fog layers, in widths up to 12 m.