Concrete Wall Waterproofing [FAQs]

Singapore’s tropical climate, with heavy rainfall and high humidity, makes concrete walls vulnerable to water penetration. Waterproofing helps prevent water seepage, mold growth, and long-term damage, which can compromise the structure's integrity.

Common signs include visible dampness on walls, peeling paint, mold or mildew growth, and efflorescence (white, powdery stains on the surface). You might also notice cracks or water stains.

Common methods include applying waterproofing membranes, cementitious coatings, polyurethane or epoxy injections, and liquid-applied waterproofing. Each method has different applications depending on the structure and exposure to moisture.

Yes, waterproofing can be applied to both new and existing walls. For existing walls with damage or leaks, repairs should be made before applying a waterproofing solution to ensure effectiveness.

The longevity of waterproofing depends on the type of system used. Cementitious coatings typically last 5-10 years, while liquid-applied membranes and polyurethane-based systems can last 10-20 years with proper maintenance.

Minimal maintenance is required, but regular inspections for cracks, peeling, or any signs of water infiltration should be performed. Keeping the surrounding areas clean and dry can also help prolong the effectiveness of the waterproofing.

Some waterproofing methods, like cementitious coatings, blend in with the concrete’s appearance, while others, like membranes or liquid coatings, may alter the surface look slightly. However, many modern products are designed to be visually discreet or customizable to fit the aesthetic of your home.