Supplier of Geosynthetic Materials
Floating Covers for Africa . 20–30 Year Reinforced PE Systems
REINFORCED PE FLOATING COVER SYSTEMS (20–30 YEAR DESIGN LIFE)
Geosynthetics Africa delivers high-performance Reinforced Polyethylene (RPE) floating cover systems designed for long-term reservoir containment, evaporation control, and water protection across mining, municipal, and industrial applications.
These systems are based on true LLDPE-reinforced membranes with high-tenacity PET scrim, engineered for superior UV resistance, flexibility, and long-term durability, specifically suited to African climatic extremes.
Unlike conventional floating cover materials, our systems are designed as integrated engineered solutions-combining:
- Material performance (true PE chemistry)
- Reinforcement (scrim-based structural stability)
- Installation QA/QC (IAGI-aligned execution)
- System-level design (anchorage, gas management, drainage, access)
Reinforced PE (RPE) – Structural Membrane Technology
The core of the system is a scrim-reinforced LLDPE membrane, combining:
- Flexible polyethylene matrix (LLDPE)
- High-strength PET reinforcement (9×9 – 1000 denier scrim)
- Carbon black stabilization for long-term UV resistance
This creates a membrane that delivers:
- High tensile strength with controlled elongation
- Exceptional puncture and tear resistance
- Superior dimensional stability under temperature cycling
- Long-term UV durability exceeding exposed HDPE limitations
Available Grades
RPE 1.52 mm – High Performance / 30-Year Class
- Thickness: 1.52 mm nominal
- Weight: ~1069 g/m²
- Reinforcement: 9×9 PET scrim (1000 denier)
- Tensile Strength: ~1600 N grab
- Puncture Resistance: ~600 N
- UV Resistance: ≥1600 hours accelerated exposure
- Temperature Range: -57°C to +82°C
- Certification: NSF/ANSI 61 potable water compliant
RPE 1.14 mm – Flexible / Intermediate Performance
- Thickness: 1.14 mm nominal
- Weight: ~923–1040 g/m²
- Reinforcement: 9×9 PET scrim (1000 denier)
- Tensile Strength: up to ~1557 N
- Puncture Resistance: up to ~556 N
- UV Resistance: ≥1600 hours accelerated exposure
Core Engineering Advantages (vs Conventional Floating Covers)
1. True Polyethylene System (Not Modified Blends)
- Chemically stable LLDPE matrix
- Compatible with standard geomembrane welding techniques
- No reliance on proprietary blends – predictable long-term behaviour
2. Reinforced Structural Performance
- PET scrim provides:
- Controlled elongation (~22–30%)
- High tear resistance (~600 N)
- Eliminates stress concentration failures common in unreinforced films
3. UV & Oxidative Resistance
- Carbon black: 2–3% loading
- High Pressure OIT up to 2400 minutes
- Engineered for long-term exposed conditions in Africa
4. Extreme Flexibility
- Low temperature brittleness: -77°C
- Maintains flexibility under:
- Daily thermal cycling
- Wind-induced movement
- Water level fluctuations
5. Large Panel Efficiency
- Roll size: upto 4 m × 500 m (~2000 m²)
- Reduced welding:
- Faster installation
- Lower defect risk
- Improved QA/QC outcomes
TECHNICAL SPECIFICATION – REINFORCED PE FLOATING COVER MEMBRANES
| Property | RPE 1.52 mm | RPE 1.14 mm |
|---|---|---|
| Nominal Thickness (mm) | 1.52 | 1.14 |
| Minimum Thickness (mm) | 1.44 | 1.02 |
| Mass (g/m²) | ~1069 | ~923–1040 |
| Reinforcement | 9×9 PET Scrim (1000 denier) | 9×9 PET Scrim (1000 denier) |
| Density (g/cc) | ≥0.925 | ≥0.925 |
| Carbon Black (%) | 2.0 – 3.0 | 2.0 – 3.0 |
| Carbon Black Dispersion | Cat. 1 / 2 | Cat. 1 / 2 |
| Elongation @ Break (%) | ~30 | ~30 |
| Grab Tensile Strength (N) | ~1600 | ~1550 |
| Tear Resistance (N) | ~600 | ~600 |
| Puncture Resistance (N) | ~600 | ~550 |
| OIT (Standard) (min) | ≥150 | ≥150 |
| HPOIT (min) | ≥2400 | ≥2400 |
| UV Resistance (1600h) | ≥35% retained | ≥35% retained |
| Dimensional Stability (%) | ±2 | ±2 |
| Low Temp Brittleness (°C) | -77 | -77 |
| Max Service Temp (°C) | 82 | 82 |
| Min Service Temp (°C) | -57 | -57 |
| Hydraulic Conductivity (cm/s) | 1.47 × 10⁻¹⁰ | 1.47 × 10⁻¹⁰ |
| Roll Width (m) | 3.71 | 3.71 |
| Roll Length (m) | 457 | 457 |
| Roll Area (m²) | ~1696 | ~1696 |
| Colour | Tan / Black | Tan / Black |
| Certification | NSF/ANSI 61 | NSF/ANSI 61 |
Floating Covers engineered with reinforced PE for 20–30 year design life. UV-resistant, flexible, and QA/QC installed for reservoirs across Africa.
Geosynthetics Africa
Engineered Supply. Pan-African Logistics. QA/QC Installed Floating Cover Systems.
Floating Cover System Components
Our floating cover systems are delivered as pre-engineered, factory-fabricated assemblies, reducing site welding, improving QA/QC integrity, and accelerating installation on large reservoirs (e.g. 13,000 m² class systems).
1. Reinforced PE Floating Membrane Panels
- Factory-cut and layout-optimised panels
- Reinforced LLDPE (RPE) with PET scrim
- Large panel formats to reduce field seams
- Pre-marked for installation sequencing
2. Perimeter Anchorage System
- Anchor trench or mechanical anchoring interface
- Factory-prepared edge terminations
- Reinforced edge strips for load transfer
- Designed for wind uplift and long-term stability
3. Floatation & Buoyancy System
- Integrated air flotation (passive system)
- Ballast-controlled configurations where required
- Designed to accommodate:
- Water level fluctuation
- Wind loading
- Surface movement
4. Gas Venting System
- Factory-integrated vent sleeves and ports
- Designed for:
- Biogas release
- Vapour pressure equalisation
- Prevents ballooning and structural stress
5. Stormwater Drainage System
- Pre-fabricated sump points
- Integrated drainage channels or low points
- Pump-out or gravity drainage options
6. Access & Maintenance Points
- Reinforced access hatches
- Inspection ports
- Walkway-reinforced zones where required
7. Pipe Penetration Assemblies
- Factory-fabricated boot details
- Compatible with:
- Inlet/outlet pipes
- Pump columns
- Extrusion-weld ready interfaces
8. Panel Connection & Welding System
- Thermal wedge weld zones pre-defined
- Reduced site welding lengths
- Compatible with:
- Double seam welding
- Extrusion welding at details
9. QA/QC Control Integration
- Panel numbering and traceability
- Factory quality checks prior to dispatch
- Seam layouts aligned with QA testing protocols
Factory-fabricated floating cover systems reduce site risk, improve weld quality, and ensure predictable long-term performance on large-scale reservoirs.
Primary Applications
- Mining process water reservoirs
- Tailings storage facilities (TSF water management)
- Potable water reservoirs (NSF 61 compliant systems)
- Industrial effluent ponds
- Agricultural irrigation dams
Performance Outcomes
- Evaporation reduction (critical in arid climates)
- Water quality protection (dust, algae, contamination)
- Odour and emission control
- UV shielding of stored water
- Reduced maintenance vs open reservoirs
Why Reinforced PE Outperforms Modified non-PE systems.
| Parameter | Reinforced PE (RPE) | Typical non-PE |
|---|---|---|
| Base Polymer | True LLDPE | Modified polymer systems |
| Reinforcement | PET scrim (structural) | Reinforced / coated systems |
| UV Stability | Carbon black PE | Coating-dependent |
| Welding | Standard geomembrane welding | Often specialised |
| Flexibility | Excellent | Good |
| QA/QC | Geomembrane standardised | System-dependent |
| African Track Record | Proven | Proven |
Conclusion:
Reinforced PE provides a more predictable, weldable, and QA/QC-controlled system, reducing long-term risk.
GEOSYNTHETICS AFRICA ADVANTAGE
- Integrated Supply + Logistics + Installation + QA/QC
- Proven Pan-African execution capability
- Access to global reinforced PE manufacturing
- Ability to deliver 20–30 year design-life systems
- Full engineering support and specification alignment
Reinforced PE Floating Cover Systems (RPE)
Floating Covers Africa – 20–30 Year Design Life
Engineered reinforced PE floating covers for long-term UV resistance, flexibility and QA/QC-controlled installation across mining, water and industrial reservoirs.
Yrs Design Life
30
Min. HPOIT. Oxidative Stability
2400
hrs . UV Resistance Accelerated Exposure
1600
+