GSE® HD Leak Location Conductive Geomembrane Liner - GRI-GM13

Find the Leak Without Digging for It

GSE Leak Location Conductive is a co-extruded HDPE geomembrane with a conductive layer on the underside. That layer turns the liner itself into part of the leak detection system: an electrical survey can locate a defect through cover soils or under water, with no excavation and no guesswork about where to look.

Why conductive, not just surveyed. Electrical leak location can be run over conventional geomembrane, but it depends on the subgrade beneath providing a return path - which means variable ground conditions produce variable results. A conductive backing gives the survey a defined conductive plane directly beneath the liner, so both spark and dipole methods work with materially higher reliability than the same survey over non-conductive sheet. Surveys get faster, cheaper and more accurate, and a pinhole anywhere on the panel is detectable.

Seaming is where conductive liners are won or lost. During fusion welding, the upper flap of one panel can contact the conductive layer of the panel below, creating electrical pathways that either break conductivity across the sheet or generate false positives over every seam. Solmax's patented Iso-wedge tool, fitted to a standard fusion welding machine, isolates the upper flap from the bottom panel during seaming and eliminates the problem. It is the difference between a conductive liner that surveys cleanly and one that produces a map of defects at every weld.

The survey. Bare surveys use the S-100 spark tester, supplied with cart, brush and seam electrodes so wrinkles, slopes and seams can all be tested. Covered surveys use the dipole method through cover soil or water. Both are supported by the same liner.

Where to specify it. High-consequence containment where a leak cannot be tolerated and cannot easily be found later — TSF base liners and double-liner systems, hazardous waste cells, landfill primary liners, and any facility where a regulator or design brief requires post-installation leak location. Also worth specifying anywhere cover soil is placed early, since that is exactly the condition that makes conventional defect-finding prohibitively expensive.

Orientation is critical. The conductive layer is on the underside. The sheet must be deployed conductive-side down, against the subgrade. A panel laid inverted will not survey.

Available in GSE HD and GSE LL grades, smooth, textured and white. Geosynthetics Africa supplies ex-stock with IAGI-aligned installation, Iso-wedge seaming and a full QA dossier under our own name.