Case 3

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Cause of Defects

plumbing
Figure 1
  • Poor design detailing or poor workmanship could lead to insufficient gradient towards the floor trap, flowing water towards the wall and subsequently causing water seepage
  • Inappropriate positioning of the floor trap may create water flow towards the wall (Figure 1).
  • Prolonged contact with water with following conditions may lead to water seepage through the wall
    1. lack of waterproofing membrane
    2. deterioration or premature failure of the membrane. In general, the durability of waterproofing membrane is 10-15years
    3. rising dampness along the wall