Tracer Gases which is a mixture of hydrogen and nitrogen are forced into your pipework at safe working pressures. Under pressure, this gas will escape from any leak. The gas can travel through walls, concrete floors, and timber. A sensitive tracer pinpoints the leak by picking up any trace of the gas down to just a few parts per million.
The image shows just one the types of gas tracing kits we use in our day to day leak detection services.