Roof Moisture Survey

A nuclear roof moisture survey is the most accurate way to locate trapped moisture in ballasted roofs.

Roof moisture survey.

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. Moisture surveys are conducted using a prelocated grid pattern throughout the roof area at which the device is placed and readings are recorded. The grid pattern is typically 5 to 10 feet apart. This only works when there is a direct line of sight to the underside of the roof which obviously has limitations.

The survey commenced at approximately 7 45 p m. 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. 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. The plotting of wet areas is derived from the recorded readings and identified on a roof plan.

The infrared roof moisture survey was conducted to locate and define areas of moisture insulation within the roof system. If a set of drawings or roof plan is not available prepare a plan and report sheets for each section being surveyed or better still use the tramex moisture mapping app.