Patching Works

The patching is a commonly used trenchless method for repairing pipe defects like cracks, fractures, open joint and joint displacement. Pipe cleaning and clearing of obstructions need to be done prior to an effective patching works. CCTV Inspection must also be done to determine the point for rehabilitation, each patch point is then installed accurately at the point determined. Each patch point is 0.5m at length.

The picture below shows the condition of the damaged pipe (defect type: joint displacement) before and after the patching method is performed.