rLLDPE Floating Cover Liners - FC45 & FC60 | Africa's Floating Cover Specialist

Floating cover installation begins with design. Before any material is cut or seamed, Geosynthetics Africa produces a detailed cover layout drawing accounting for pond geometry, operating liquid level range, maximum and minimum freeboard, wind uplift loads, rainwater drainage design, access hatch positions, and anchor perimeter detail. The installation method - dry or wet - is determined at design stage based on the structure type and liquid level conditions at time of installation.

Two installation methods are used depending on site conditions. Dry installation is carried out in an empty or dewatered structure - the cover is fabricated and laid directly over the base, with foam floats and ballast tubes positioned per the layout drawing. As the structure is filled, the cover rises with the liquid level, taking up its designed floating geometry. Wet installation is used where the structure is in service or cannot be emptied - the cover is fabricated adjacent to the structure and progressively pulled across the liquid surface as additional panels are seamed. Both methods are executed by Geosynthetics Africa using the same QA/QC standards and deliver the same outcome: a fully floating, anchored and tested cover system

Cover deployment is carried out with the pond at or near operating liquid level to allow the cover to float into position under controlled conditions. Panels are deployed sequentially from one end of the pond, weighted temporarily to prevent wind uplift, and progressively seamed as deployment proceeds. The cover perimeter is anchored to the pond wall or anchor trench using the specified detail - ballast tubes, concrete anchor beams or perimeter batten systems depending on the All field seams are made using extrusion or hot-air welding with compatible LLDPE welding rod. Trial welds are produced and tested before production seaming begins. Completed seams are non-destructively tested - vacuum-box (ASTM D5641) or air-channel pressure test - and destructive peel/shear samples taken per the project QA plan to ASTM D6392. The completed cover system includes closed-cell foam floats for buoyancy, sand tube ballast lines to control drainage geometry, rainwater sump and pump or gravity drainage, and access hatches at specified locations. All penetrations, vents and anchor details are installed and sealed as part of the Geosynthetics Africa scope.

On completion, Geosynthetics Africa delivers a full QA dossier: seam log, NDT test results, destructive test records, panel as-built drawing, penetration and anchor detail records, rainwater system commissioning record, and a signed handover certificate. A cover maintenance guide covering inspection frequency, repair procedures and rainwater pump maintenance is included with every handover package.