Construction Process of HDPE geomembrane1. Determine the laying plan. First of all, it is necessary to clarify the location and purpose of laying, determine the required materials and tools, and calculate the area of geomembrane.2. Ground preparation. 3. Lay geomembrane. 4. Geomembrane welding. 5. Press the geomembrane tightly. 6. Pressure test 7. Repair.