BC Leak Detection Technology Comparison: 8 Methods Compared

Professional leak detection uses eight technologies, each with specific strengths. Understanding them helps choose the right approach. This comparison covers all eight methods.

Thermal Imaging: Best for building envelope surveys, roof leaks, and interior moisture. Detects temperature differences of 0.03C. Works best in heating season. Cannot see through insulation or detect underground leaks. Cost: moderate.

Acoustic Detection: Best for pressurized underground pipes and water mains. Uses ground microphones to detect escaping water sound. Requires water pressure. Less effective on plastic pipes. Cost: low-moderate.

Leak Noise Correlation: Best for long underground pipe runs and water mains. Uses two sensors to calculate leak position with 30cm accuracy over 1km runs. Cost: moderate.

Ground-Penetrating Radar: Best for concrete slabs, utility locating, and void detection. Images subsurface conditions. Identifies pipe locations and soil saturation. Cost: moderate-high.

Tracer Gas: Best for plastic pipes, low-pressure systems, and geothermal loops. Injects 95:5 nitrogen-hydrogen mixture. Detects pinhole leaks. Requires pipe isolation. Cost: high.

Sonar Hydrophone: Best for large-diameter mains and deep pipes. Inserts sensors into water column through hydrants. Detects sounds surface methods miss. Cost: high.

CCTV: Best for sewer and drain lines. Camera inspects pipe interior. Identifies blockages and cracks. Provides video documentation. Cost: moderate.

Electronic Leak Detection: Best for flat roof membranes and waterproofing. Applies low-voltage current across membrane. Detects breaches. Works on EPDM, TPO, PVC. Cost: moderate-high.

Permanent Monitoring: Best for high-risk buildings and municipal systems. 24/7 acoustic sensors send automated alerts. Earliest possible detection. Cost: high initial investment.