Leak detection and location system and method

A system for detecting and locating a leak in a building layer, the system comprising:

• at least one sensing module comprising:
• at least one cell having a major surface juxtaposed to a portion of a first surface of the building layer and incorporating at least one pair of mutually spaced electrodes defining a sensing path extending parallel to the cell major surface;
• and
• sensing circuitry cooperable with said cell and configured to apply a voltage between the cell electrodes to measure an electrical property therebetween, said sensing circuitry being further cooperable with a probe arranged to be applied to a second surface of the building layer opposite said first surface and being further configured to apply a voltage between at least one of the cell electrodes and the probe to measure an electrical property therebetween;
• and
• control circuitry operatively associated with said sensing circuitry and configured to:
• detect the presence of a leak within the portion of the first surface based on at least a first measurement from the sensing circuitry of the electrical property between the cell electrodes;
• and
• locate a point of leakage within the portion of the first surface based on at least a second measurement from the sensing circuitry of the electrical property between the probe and at least one of the cell electrodes .