Leak detection - Geosynthetics South Africa https://geosynthetics.co.za GSE HDPE Liners, Mirafi® Geotextiles, HDPE Geocell, Gabions and Jute Erosion Cover Supplier in Africa Sun, 11 Oct 2026 14:58:34 +0000 en-US hourly 1 https://wordpress.org/?v=7.1.3 https://geosynthetics.co.za/wp-content/uploads/2026/10/cropped-exec-bd833810-61e1-49f2-8574-210208f77b58-32x32.png Leak detection - Geosynthetics South Africa https://geosynthetics.co.za 32 32 GeoDrain LD 420 - Leak Detection Drainage Core -HDPE ( 2.35m x 60m) https://geosynthetics.co.za/product/geodrain-ld-420-leak-detection-drainage-core/ Sat, 17 Jan 2026 16:13:25 +0000 https://geosynthetics.co.za/?post_type=product&p=7903 GeoDrain LD 420 is a cuspated HDPE drainage core used between lining layers in containment systems. Its dimpled structure creates drainage paths for leak-detection collection and gas venting. This 420 g/m² grade is supplied in 2.35 m x 60 m rolls for engineered liner assemblies.

The post GeoDrain LD 420 - Leak Detection Drainage Core -HDPE ( 2.35m x 60m) appeared first on Geosynthetics South Africa.

]]> GeoDrain LD 420 is a high-performance HDPE cuspated drainage core developed for use in leak detection and venting systems within lined containment structures. The product is primarily installed between primary and secondary geomembrane liners, where it enables rapid collection, conveyance, and monitoring of leaked fluids, while also facilitating controlled gas venting.

The cuspated structure provides reliable in-plane flow capacity while maintaining consistent thickness under load. GeoDrain LD 420 allows leaked liquids to be channelled to monitoring points for early detection of liner integrity issues, supporting regulatory compliance and long-term environmental protection.

In addition to leak detection, GeoDrain LD 420 is effective as a gas venting layer, preventing pressure build-up beneath geomembranes and improving the overall stability and durability of containment systems. Its HDPE construction offers excellent chemical resistance, durability, and compatibility with adjacent geosynthetic materials.

GeoDrain LD 420 is commonly used in landfills, mining containment facilities, heap leach pads, lined reservoirs, and environmental protection works where early leak detection and controlled venting are critical to asset performance and environmental safety.

Specifications Snapshot

Property Value
Product Type Cuspated drainage core
Material HDPE
Primary Function Leak detection & gas venting
Nominal Thickness ± 5.0 mm
Dimple Height ± 4.2 mm
Mass ± 420 gsm
Compressive Strength ≥ 700 kN/m²
In-Plane Flow Rate ≥ 1.7 l/m·s (tested in accordance with EN 13252 / EN ISO 12958)
Roll Dimensions 2.35 m × 60 m
Standard EN 13252

Typical Applications

  • Leak detection layers in double-lined systems

  • Gas venting beneath geomembranes

  • Landfills and hazardous waste facilities

  • Mining containment and heap leach pads

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