Required Roof Conditions for Infrared Flat Roof Moisture SurveyThe requirements listed below are based on current industry standards, including those published by ASTM, IIBEC and Infraspection Institute. Following these requirements will help to ensure optimal conditions and best results.
Dry Roof Membrane: Dry Roof Membrane: The roof membrane must be dry at sunrise and at the time of the inspection. Because an infrared imager cannot “see through water”, any areas with the presence of ice, snow, or standing water cannot be effectively inspected.
Solar Loading: The day of the Survey should be a mostly sunny day, providing good solar loading. A general rule of thumb is if the roof surface or a nearby similar surface (i.e. parking lot, street or sidewalk) is warm to the touch, the roof will be warm.
Minimum Daytime Temperature: Daytime high temperatures should be at least 40° F.
Winds of less than 15 mph: During daytime hours and at the time of the Survey, winds should be less than 15 mph.
No precipitation on the day of the Survey: Moisture that falls during the day of the Survey: Moisture that falls during the day of the Survey will interrupt normal solar loading and cool the roof surface.