Best Practices

Building exterior wall leakage case

Building External Wall Leakage​ is one of the most overlooked yet far‑reaching problems in Hong Kong’s high‑density buildings – rainwater seeps through cracks, ageing public water supply pipes drip, and damaged public sewage pipes cause odour and hygiene issues. The source is often outside the affected unit, and liability involves the owners’ corporation, management office, and multiple owners, making it far more complex than ordinary seepage. Our case studies document how we conduct high‑level inspections using gondolas or drones, combined with infrared thermography to scan cold spots on walls, fluorescent dye tests to isolate public pipe sections, and high‑pressure water testing to verify window frame and aluminium panel waterproofing. From private residential estates to commercial buildings, from spalling concrete facades to curtain wall leaks, each case presents a clear investigation logic, liability analysis, and the critical details that helped clients successfully claim from insurers or reach repair agreements with the owners’ corporation.