Special cameras (CCTV) are used to identify sewer pipes that are damaged or degraded. Targeted pipes are then repaired using innovative relining techniques to correct faults, rather than being replaced. This is a no-dig and cost-effective way of renewing the pipe.
In most cases, circular pipe-liners are formed on site by taking a continuous strip of plastic and spirally winding it inside the damaged host pipe, forming a water-tight pipe within your pipe.
Another method is Cured-In-Place pipe relining. This involves inserting a liner into the pipe, which is then hardened in place using steam or hot water, becoming a pipe within your pipe.
Any water used during the relining and flushing process is either supplied by the contractor, or accessed via a hydrant using a Unitywater metered standpipe. Water does not come from the property’s water supply.
Maintenance structures and access chambers (manholes) are visually inspected for signs of deterioration and, if required, a special coating is applied to the internal concrete surface to restore these to original condition.