Water Infiltration Testing Using Infrared Thermography

Water Spray Rack - This test simulates a wind-driven rain condition on a subject. It can assist in determining the specific cause and origin of moisture infiltration when it is used to test independent components of the envelope. Spraying water over a large area in an uncontrolled fashion will not reveal specific causes of moisture infiltration. Hose Spray Test - This test method also simulates wind-driven rain in small, segmented areas using a standard garden hose in which a calibrated nozzle is attached with a pressure gauge. The spray is directed at a specific joint, crack, or defect to reveal potential moisture intrusion. Differential Pressure Test - A pressure chamber is typically constructed on the interior of the facility at a specific location to test moisture driven through an assembly or component. The assembly or component is subjected to a negative force while simultaneously a spray rack test is directed at the assembly to draw the moisture into the facility to simulate a negative pressure under a wind-driven rain condition.