Basement & Car Park Waterproofing in Malaysia

Basement & Car Park Waterproofing

Underground structures face the most challenging waterproofing conditions. Water pressure from the surrounding soil (hydrostatic pressure) constantly pushes against walls and floors.

Types of Below-Grade Waterproofing

Positive Side (External)

Applied on the outside of the structure

Most effective but only possible during construction

Cost: RM15–25/sqft

Negative Side (Internal)

Applied inside the basement

Used for existing buildings

Cost: RM12–20/sqft

Injection Waterproofing

Injecting polyurethane or epoxy into cracks

Targeted repair of active leaks

Cost: RM500–2,000 per crack

Common Basement Issues

1. Water seepage through walls

2. Floor slab water pressure (rising water)

3. Construction joint leaks

4. Pipe penetration leaks

5. Sump pit overflow

Materials Used

Crystalline waterproofing — penetrates concrete, self-healing

Bituminous membrane — barrier system for walls

Polyurethane injection — crack repair

Bentonite panels — clay-based water barrier

For basement and car park waterproofing projects, contact AquaShield.