Geomembrane Liners
GSE HD Double-Side Textured Geomembrane Liner - GRI-GM13
GRI-GM13 certified HDPE geomembrane textured on both faces for maximum interface friction. Specified on containment slopes steeper than 3H:1V - TSF embankment faces, landfill side slopes and dam batters where veneer stability governs the design. 1.0mm to 2.5mm, 100% virgin resin, Solmax GSE manufactured.
Overview
Maximum Interface Friction, Both Faces
GSE HD double-side textured geomembrane carries a co-extruded textured surface on both faces. It is the specification for containment slopes steeper than 3H:1V, where veneer stability governs the design and the liner must develop shear resistance against the layers above and below it - TSF embankment faces, landfill side slopes, heap leach pad slopes and dam batters.
Why both faces. On a slope, the liner sits between two interfaces and either one can be the failure surface. A smooth face against cover soil or against an underlying geotextile or GCL creates a low-friction plane, and the veneer stability calculation is only as good as the weakest interface in the section. Texturing both faces removes that weak plane from the design. Above 3H:1V this stops being an optimisation and becomes the requirement - which is why double-textured is written into most steep-slope specifications as mandatory rather than optional.
Asperity governs performance, not thickness. For textured sheet, thickness alone tells an engineer very little. Asperity height - tested to ASTM D7466 on every roll - is what drives the interface friction angle used in the stability analysis. GRI-GM13 sets a minimum of 10 mils (0.25mm) for textured HDPE, and GSE HD textured is manufactured above it. Thickness is separately measured to ASTM D5994 as a minimum average with defined lowest-individual limits, a stricter convention than the simple average used for smooth sheet, so the two values are read together rather than interchangeably.
Design note. Interface friction angles are interface-specific and should be confirmed by direct shear testing to ASTM D5321 on the actual materials in the section - liner, cover soil, geotextile, GCL as applicable. Published or generic friction values are not a substitute for project-specific testing on a slope where stability governs. We can assist in arranging interface shear testing as part of the design package.
Certified to GRI-GM13 and the wider standards held by the GSE HD series, manufactured from 100% virgin resin. Geosynthetics Africa supplies ex-stock with IAGI-aligned installation by our own crews and a full QA dossier on completion.
- MaterialHigh-Density Polyethylene (HDPE) - 100% virgin resin
- StructureCo-extruded, textured both faces
- ColourBlack
- StandardGRI-GM13 · ASTM D7466 asperity · SANS 1526
- Roll Width7m
- Roll Lengthgrade dependent
Typical Properties
| Testing Properties | Test Method | Unit | 1.0mm | 1.5mm | 2.0mm | 2.5mm |
|---|---|---|---|---|---|---|
| Thickness | ASTM D5199 | mm | 1.00 | 1.50 | 2.00 | 2.50 |
| Density | ASTM D792 | g/cm³ | ≥ 0.940 | ≥ 0.940 | ≥ 0.940 | ≥ 0.940 |
| Tensile strength at break | ASTM D6693 | kN/m | 27 | 40 | 53 | 67 |
| Tensile Strength at Yield | ASTM D6693 | kN/m | 15 | 22 | 29 | 37 |
| Tear resistance | ASTM D1004 | N | 106 | 168 | 224 | 280 |
| Puncture resistance | ASTM D4833 | N | 320 | 480 | 640 | 800 |
| Stress crack resistance | ASTM D5397 | hr | ≥ 500 | ≥ 500 | ≥ 500 | ≥ 500 |
| Roll width | - | m | 7 | 7 | 7 | 7 |
| Roll Length | - | m | 210 | 150 | 110 | 85 |
| Area per roll | - | m² | 1470 | 1050 | 770 | 595 |
Note: The above specifications represent the product family properties. Please refer to the product datasheet for individual SKU values.
Typical Applications
View all applicationsTailings Storage Facility Lining
HDPE lining for tailings cells and embankments, including composite and double liner systems with leak detection.
Heap Leach Pad Lining
HDPE barriers beneath ore stacks and solution ponds for leach solution containment and recovery.
Reservoir & Dam Lining
HDPE lining to control seepage in dams, reservoirs and process water storage, selected for site conditions.
Landfill, Ash & Bund Lining
HDPE barriers for landfill cells, ash facilities and secondary containment, with protection and drainage layers as required.
Compatible Systems
View all systemsHDPE Smooth Geomembranes
The standard profile for flat and gently graded containment surfaces - TSF base liners, landfill cells, reservoirs, canals and process ponds on slopes not exceeding 3H:1V. Virgin resin, GRI-GM13 certified. 1.0 mm – 3.0 mm.
HDPE Textured Geomembranes (Single & Double)
Specified where slope stability and interface friction are design-critical. Single-textured for one-sided friction interfaces; double-textured mandatory on slopes steeper than 3H:1V. GRI-GM13 certified. 1.0 mm – 2.5 mm.
HDPE White / Reflective Geomembranes
Reflective white surface bonded to a black HDPE base - reduces liner temperature in high UV environments where exposed black HDPE can exceed 70 °C. Specified for heap leach pads, exposed caps and long-term surface applications. GRI-GM13 certified. 1.0 mm – 2.5 mm.
HDPE Conductive Geomembranes (ELL-enabled)
Conductive layer enables Electrical Leak Location (ELL) testing through cover soils and under water - pinpointing defects without excavation. Specified for high-consequence TSF, hazardous waste and double-liner systems requiring post-installation leak detection. 1.5 mm – 2.5 mm.
HDPE High-Temperature Geomembranes
Engineered for process fluid temperatures exceeding standard HDPE thermal tolerance - hot leach solutions, thermal heap leach and elevated-temperature industrial ponds above 60 °C. Project-specified. Contact our technical team for application assessment
Installation Guidance
Standard Method Statement
Installation follows the approved project method statement, panel layout and QA/QC plan. The receiving surface is inspected before deployment. Panel overlaps, anchorage, temporary restraint and welding conditions are set for the selected liner and equipment, following manufacturer guidance and the project specification.
Dual-track fusion welding and extrusion welding are used as appropriate to the seam and detail. Non-destructive testing uses the applicable method: pressurised air-channel evaluation to ASTM D5820 for dual seams, and vacuum-chamber evaluation to ASTM D5641 where suitable. Destructive peel and shear testing to ASTM D6392 is performed at the frequency and acceptance criteria defined in the approved project QA/QC plan.
Repairs are recorded and retested using the applicable method before acceptance and covering. Handover documentation is defined in the agreed scope and may include material roll records, panel layouts, weld logs, non-destructive and destructive test records, repair logs, as-built drawings and the handover certificate.
Quality Assurance & Testing
Field QA/QC Checklist
- Subgrade Acceptance: Subgrade signed off before deployment: smooth, compacted, free of stones, roots and protrusions, and no standing water or desiccation cracks.
- Material Conformance: Roll numbers and manufacturer QC certificates checked against GRI-GM13 (HDPE) or GRI-GM17 (LLDPE); conformance samples taken where the CQA plan requires.
- Trial Welds: Trial seams made and peel/shear tested at the start of each shift, for each welder and machine, and whenever conditions change.
- Non-Destructive Seam Testing: 100% of seams tested: air-pressure testing of double-wedge welds (ASTM D5820) and vacuum-box testing of extrusion welds, patches and repairs (ASTM D5641).
- Destructive Seam Testing: Seam samples cut at intervals set by the CQA plan (GRI-GM14) and tested in shear and peel to ASTM D6392 against GRI-GM19 values.
- Leak Location Survey: Electrical leak location survey (ASTM D7007 for covered liners, ASTM D7002/D7703 for exposed liners) where specified, before handover.
- Panel Layout & Repairs Record: As-built panel layout, seam log and repair log kept and signed off, with every repair vacuum-tested.
Manufacturing Standards
- GRI-GM13 (HDPE) / GRI-GM17 (LLDPE) material specification
- GRI-GM19 seam strength requirements
- ASTM D6392 seam strength testing
- ASTM D5820 air channel / ASTM D5641 vacuum box testing
- ASTM D7007 electrical leak location (where specified)
- Manufacturer QC certificates per roll
- GRI-GM13 · ASTM D7466 asperity · SANS 1526
Documents
Product Selection Guide
Compare performance properties across the entire category hierarchy before specifying.
Installation & Method Statement
Standard deployment procedures, installation specifications, and field application method statements.
QA/QC Site Checklist
Field quality control procedures, inspection checklists, and testing standards to verify installation integrity.
Technical Data Sheet (TDS)
Guaranteed minimum average roll values (MARV) and material testing properties.
Chemical Resistance / Accessories Guide
Chemical compatibility matrix and list of auxiliary materials needed for installation.
Projects Using GSE HD Double-Side Textured Geomembrane Liner - GRI-GM13
Supply of 61,600 m² of GSE® HDPE geomembrane to Ikongwe Iron Ore Mine in Botswana: 21,560 m² of 1.0 mm liner and 40,040 m² of 2.0 mm liner.
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