HydroTrace Technical Knowledge Centre
Short, structured technical guides for leak detection, CCTV inspection, GPR, utility location and pipe relining in South Africa.
What Is Pipe Relining?
Pipe relining is a trenchless pipe rehabilitation method that repairs existing pipelines internally without full excavation.
Read guideWhat Is CIPP Pipe Relining?
CIPP pipe relining uses a resin-saturated liner that cures inside an existing pipe to form a new structural pipe within the old pipe.
Read guidePipe Relining vs Pipe Replacement
Pipe relining avoids major excavation where the existing pipe can still act as a host pipe; replacement is used when the pipe is too collapsed, misaligned or inaccessible for lining.
Read guideCan Pipes Be Relined Under Buildings?
Many drainage and sewer pipes under buildings can be relined if CCTV inspection confirms that a liner can be inserted and cured through available access points.
Read guideCCTV Pipe Inspection Guide
CCTV pipe inspection uses a pipe camera to identify cracks, roots, collapse, joint displacement, corrosion, standing water and blockages.
Read guideTrenchless Pipe Rehabilitation Guide
Trenchless pipe rehabilitation repairs buried or inaccessible pipes with reduced excavation using lining, patching or coating systems.
Read guideStormwater Pipe Rehabilitation Guide
Stormwater rehabilitation addresses cracked, leaking, root-damaged or displaced pipes that can undermine paving, roads, landscaped areas and buildings.
Read guideSewer Pipe Relining Guide
Sewer pipe relining repairs damaged sewer lines internally after cleaning and CCTV verification, reducing excavation through floors, paving and landscaped areas.
Read guideDownpipe Relining Guide
Downpipe relining can rehabilitate vertical drainage stacks and rainwater pipes in buildings where wall chasing or demolition is undesirable.
Read guidePipe Relining Cost Factors in South Africa
Pipe relining cost depends on pipe diameter, length, access, cleaning, CCTV inspection, material, failure severity and curing method.
Read guide