Does weathering of a shingle over time affect the thickness, and therefore the measurement, given by the Shingle Gauge™?
Yes, as granules wear away and asphalt deteriorates due to weathering over time, the thickness of the shingle is affected. Variables such as local climate (heat, UV exposure, and moisture), foot traffic, and algae or lichen growth, all effect how quickly a shingle will deteriorate on the roof. While there is no reliable scientific way to account for all these variables, we recommend using the Shingle Gauge™ on the least weathered part of the roof for the most accurate reading. An extremely weathered roof’s age should be considered along with the Shingle Gauge’s measurement.
