Roof Moisture Survey

By the time the scan commenced the surface temperatures were sufficiently cooled to allow necessary temperature differentials.

Roof moisture survey.

The survey commenced at approximately 7 45 p m. The nuclear technology is able to distinguish between multiple levels of moisture and can operate in a wide range of weather conditions on any type of slope roof. An on roof infrared moisture survey is a very economical method to determining the state of your flat roof. This only works when there is a direct line of sight to the underside of the roof which obviously has limitations.

The plotting of wet areas is derived from the recorded readings and identified on a roof plan. The damage from a leak in the membrane can be at a minimum a nuisance inside the building but the damage to the roof from the trapped moisture can be very costly. An under roof moisture survey is accomplished when the thermographer determines differences in mass between and wet and dry substrate by looking up at the roof from the inside of the building. Moisture surveys are conducted using a prelocated grid pattern throughout the roof area at which the device is placed and readings are recorded.

To perform a non destructive flat roof moisture inspection to astm d7954 with the dec scanner first ensure that the surface is free of debris and is dry from rain or dew. The grid pattern is typically 5 to 10 feet apart.