Common Water Ingress Points in Condos
- Bathroom floors - Failed waterproof membranes under tiles
- Balconies - Cracked tiles and degraded sealant
- Window frames - Poor sealing or aged caulking
- Pipe penetrations - Gaps around plumbing through walls
- External walls - Facade cracks from building movement
Waterproofing Methods
Membrane Waterproofing
Most common for bathrooms and balconies. Involves applying a waterproof membrane layer before tiling. Best applied during renovation when floors can be accessed.
Injection Grouting
For fixing existing leaks without major renovation. Involves injecting waterproof compounds into cracks and voids through drilled holes.
Crystalline Waterproofing
Penetrates concrete to form water-resistant crystals. Long-lasting solution for concrete structures and walls.
Frequently Asked Questions
How often should condo waterproofing be inspected?
Inspect waterproofing annually, ideally before monsoon season. Check bathroom floors, balconies, and window seals for cracks or degradation. For condos over 10 years old, consider professional inspection every 2-3 years to assess waterproof membrane condition.
What are the signs that my condo needs waterproofing?
Warning signs include: water stains on ceilings or walls, peeling paint, musty odours, visible mould growth, damp patches after rain, efflorescence (white mineral deposits), bubbling floor tiles, and higher than normal humidity levels in specific rooms.
How much does condo waterproofing cost in Singapore?
Costs vary by area and method. Bathroom waterproofing: $800-2,000. Balcony: $500-1,500. Roof terrace: $2,000-5,000. Full unit waterproofing during renovation: $3,000-8,000. These are approximate costs; get multiple quotes for accurate pricing.
Can waterproofing prevent mould growth?
Effective waterproofing is crucial for mould prevention as it stops the moisture intrusion that mould needs to grow. However, waterproofing alone isn't enough - you also need good ventilation, humidity control, and regular maintenance for complete mould prevention.