Roof Moisture Survey

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.

Roof moisture survey.

The survey commenced at approximately 7 45 p m. 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 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.

By the time the scan commenced the surface temperatures were sufficiently cooled to allow necessary temperature differentials. A nuclear roof moisture survey is the most accurate way to locate trapped moisture in ballasted roofs. This only works when there is a direct line of sight to the underside of the roof which obviously has limitations. The grid pattern is typically 5 to 10 feet apart.

An on roof infrared moisture survey is a very economical method to determining the state of your flat roof. 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.