ILLUSTRATIVE STUDY / ENGINEERING PERSPECTIVES
Following water back to its source.
A technical walkthrough of how a basement leakage problem can be investigated before an intervention is selected.
Illustrative study. This technical narrative demonstrates an investigation process. The images are architectural references; no client, completed project or measured outcome is being represented.
- Location
- Illustrative investigation
- Sector
- Commercial
- Service
- Leakage investigation / PU injection

01 / The problem
The problem
Water appears at a basement wall–slab junction after periods of rain. Surface treatments have not established a reliable explanation for the ingress.
02 / Investigation
Investigation
Map the wet areas and their timing, review drainage and construction details, inspect joints and cracks, and identify tests needed to distinguish possible pathways.
03 / Diagnosis
Diagnosis
A construction joint may provide a pathway under water pressure. This remains a hypothesis until the inspection and test evidence support it.
04 / Engineering strategy
Engineering strategy
If confirmed, consider targeted injection alongside treatment of accessible entry points and drainage defects. Choose the material and method for the joint condition and water pressure.
05 / Execution
Execution
Prepare and trial the selected method in a controlled area. Record materials, injection parameters and observations, then inspect adjacent areas for redirected leakage.
06 / Outcome
Outcome
Verify performance under representative wet conditions. This is an illustrative engineering narrative, not a completed 9squaremeter project or a claim of measured results.