Geomembrane insulation
In Saudi Arabia, lining a pond, reservoir, canal or landfill with geomembrane is often called insulation (عزل). It is the same work: an HDPE geomembrane installed as one continuous, welded and tested barrier that keeps water in, or keeps contaminants out of the ground.
Material
- HDPE geomembrane to GRI-GM13, supplied with manufacturer certificates
- Controlled delivery, storage and handling on site
- Installation to the manufacturer's installation guidelines for every product used
Supply only: HDPE rolls
We also supply HDPE geomembrane rolls without installation, from our trusted suppliers, for contractors and owners who install with their own welding teams. Tell us the thickness, whether you need smooth or textured sheet, and the quantity.
Installation
- Panel layout and deployment records
- Trial welds before production welding each day
- Fusion (automatic wedge) welding for field seams; extrusion welding for details, corners and penetrations
- Non-destructive testing (vacuum box, spark testing) and destructive peel and shear tests
- Work to an approved method statement and inspection & test plan
Liner thickness
Thickness follows the approved design. For landfills, MWAN's technical guidelines set a minimum geomembrane for each landfill category: at least 1.5 mm HDPE for non-hazardous waste, and at least 2.5 mm HDPE or a double liner with leak detection for hazardous waste.
Handover
Each project closes with detailed daily reports and handover documentation, including the seam, test-location and repair records needed for the as-built drawings. We guarantee our workmanship and support our clients after handover.