Method and apparatus to detect and locate roof leaks
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United States of America Patent
Stats
-
Nov 27, 2012
Grant Date -
Jun 10, 2010
app pub date -
Dec 23, 2009
filing date -
Aug 17, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A leak in a membrane on top of a horizontal roof deck is located by applying conductive wires on the membrane underneath the aggregate in a grid pattern. A measuring and switching circuit generates voltage having a positive attached to the roof deck and a negative attached to the wires. The circuit has a relay for each wire which can be switched between a current sensor system and the negative potential. The sensor system is arranged to sense at each of the wires in turn the current flowing from the roof deck through any leak in the membrane to the wire. A micro-processor operates the relays in turn to connect all the other wires to the negative as a shield while each wire is sensed. From the output of the grid the changes in current in the x and y directions are analyzed to locate the leak in the membrane.
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Cited Art Landscape
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